[{"acknowledgement":"This work was supported by the European Regional Development Fund and by the Spanish Ministerio de Economía y Competitividad through the project SEHTOP (ENE2016-77798-C4-3-R). MI acknowledges financial support from IST Austria. YL acknowledges funding from the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant agreement No. 754411. YZ, CX, XW, KX and TZ thank the China Scholarship Council for the scholarship support. ICN2 acknowledges funding from Generalitat de Catalunya 2017 SGR 327 and the Spanish MINECO project ENE2017-85087-C3. ICN2 is supported by the Severo Ochoa program from the Spanish MINECO (grant no. SEV-2017-0706) and is funded by the CERCA program/Generalitat de Catalunya. Part of the present work has been performed in the framework of Universitat Autònoma de Barcelona Materials Science Ph.D. program. M.C.S. has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No. 754510 (PROBIST) and the Severo Ochoa programme. P.G. acknowledges financial support from the Spanish government (MICIU) through the RTI2018-102006-J-I00 project and the Catalan Agency of Competitiveness (ACCIO) through the TecnioSpring+ Marie Sklodowska-Curie action TECSPR16-1-0082. YZ and CX contributed equally to this work.","oa":1,"publisher":"Elsevier","quality_controlled":"1","year":"2021","isi":1,"publication":"Nano Energy","day":"01","date_created":"2021-04-04T22:01:21Z","doi":"10.1016/j.nanoen.2021.105991","date_published":"2021-07-01T00:00:00Z","article_number":"105991","project":[{"name":"ISTplus - Postdoctoral Fellowships","grant_number":"754411","_id":"260C2330-B435-11E9-9278-68D0E5697425","call_identifier":"H2020"}],"citation":{"short":"Y. Zhang, C. Xing, Y. Liu, M.C. Spadaro, X. Wang, M. Li, K. Xiao, T. Zhang, P. Guardia, K.H. Lim, A.O. Moghaddam, J. Llorca, J. Arbiol, M. Ibáñez, A. Cabot, Nano Energy 85 (2021).","ieee":"Y. Zhang et al., “Doping-mediated stabilization of copper vacancies to promote thermoelectric properties of Cu2-xS,” Nano Energy, vol. 85, no. 7. Elsevier, 2021.","apa":"Zhang, Y., Xing, C., Liu, Y., Spadaro, M. C., Wang, X., Li, M., … Cabot, A. (2021). Doping-mediated stabilization of copper vacancies to promote thermoelectric properties of Cu2-xS. Nano Energy. Elsevier. https://doi.org/10.1016/j.nanoen.2021.105991","ama":"Zhang Y, Xing C, Liu Y, et al. Doping-mediated stabilization of copper vacancies to promote thermoelectric properties of Cu2-xS. Nano Energy. 2021;85(7). doi:10.1016/j.nanoen.2021.105991","mla":"Zhang, Yu, et al. “Doping-Mediated Stabilization of Copper Vacancies to Promote Thermoelectric Properties of Cu2-XS.” Nano Energy, vol. 85, no. 7, 105991, Elsevier, 2021, doi:10.1016/j.nanoen.2021.105991.","ista":"Zhang Y, Xing C, Liu Y, Spadaro MC, Wang X, Li M, Xiao K, Zhang T, Guardia P, Lim KH, Moghaddam AO, Llorca J, Arbiol J, Ibáñez M, Cabot A. 2021. Doping-mediated stabilization of copper vacancies to promote thermoelectric properties of Cu2-xS. Nano Energy. 85(7), 105991.","chicago":"Zhang, Yu, Congcong Xing, Yu Liu, Maria Chiara Spadaro, Xiang Wang, Mengyao Li, Ke Xiao, et al. “Doping-Mediated Stabilization of Copper Vacancies to Promote Thermoelectric Properties of Cu2-XS.” Nano Energy. Elsevier, 2021. https://doi.org/10.1016/j.nanoen.2021.105991."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","external_id":{"isi":["000663442200004"]},"article_processing_charge":"No","author":[{"full_name":"Zhang, Yu","last_name":"Zhang","first_name":"Yu"},{"full_name":"Xing, Congcong","last_name":"Xing","first_name":"Congcong"},{"id":"2A70014E-F248-11E8-B48F-1D18A9856A87","first_name":"Yu","last_name":"Liu","orcid":"0000-0001-7313-6740","full_name":"Liu, Yu"},{"last_name":"Spadaro","full_name":"Spadaro, Maria Chiara","first_name":"Maria Chiara"},{"first_name":"Xiang","last_name":"Wang","full_name":"Wang, Xiang"},{"first_name":"Mengyao","last_name":"Li","full_name":"Li, Mengyao"},{"full_name":"Xiao, Ke","last_name":"Xiao","first_name":"Ke"},{"last_name":"Zhang","full_name":"Zhang, Ting","first_name":"Ting"},{"first_name":"Pablo","full_name":"Guardia, Pablo","last_name":"Guardia"},{"full_name":"Lim, Khak Ho","last_name":"Lim","first_name":"Khak Ho"},{"full_name":"Moghaddam, Ahmad Ostovari","last_name":"Moghaddam","first_name":"Ahmad Ostovari"},{"full_name":"Llorca, Jordi","last_name":"Llorca","first_name":"Jordi"},{"first_name":"Jordi","last_name":"Arbiol","full_name":"Arbiol, Jordi"},{"full_name":"Ibáñez, Maria","orcid":"0000-0001-5013-2843","last_name":"Ibáñez","id":"43C61214-F248-11E8-B48F-1D18A9856A87","first_name":"Maria"},{"first_name":"Andreu","full_name":"Cabot, Andreu","last_name":"Cabot"}],"title":"Doping-mediated stabilization of copper vacancies to promote thermoelectric properties of Cu2-xS","abstract":[{"text":"Copper chalcogenides are outstanding thermoelectric materials for applications in the medium-high temperature range. Among different chalcogenides, while Cu2−xSe is characterized by higher thermoelectric figures of merit, Cu2−xS provides advantages in terms of low cost and element abundance. In the present work, we investigate the effect of different dopants to enhance the Cu2−xS performance and also its thermal stability. Among the tested options, Pb-doped Cu2−xS shows the highest improvement in stability against sulfur volatilization. Additionally, Pb incorporation allows tuning charge carrier concentration, which enables a significant improvement of the power factor. We demonstrate here that the introduction of an optimal additive amount of just 0.3% results in a threefold increase of the power factor in the middle-temperature range (500–800 K) and a record dimensionless thermoelectric figure of merit above 2 at 880 K.","lang":"eng"}],"oa_version":"Submitted Version","main_file_link":[{"url":"https://ddd.uab.cat/record/271947","open_access":"1"}],"scopus_import":"1","intvolume":" 85","month":"07","publication_status":"published","publication_identifier":{"issn":["2211-2855"]},"language":[{"iso":"eng"}],"ec_funded":1,"volume":85,"issue":"7","_id":"9305","article_type":"original","type":"journal_article","status":"public","date_updated":"2023-09-27T07:41:00Z","department":[{"_id":"MaIb"}]},{"_id":"9212","article_type":"original","type":"journal_article","status":"public","date_updated":"2023-09-27T06:44:06Z","department":[{"_id":"EvBe"}],"abstract":[{"text":"Plant fitness is largely dependent on the root, the underground organ, which, besides its anchoring function, supplies the plant body with water and all nutrients necessary for growth and development. To exploit the soil effectively, roots must constantly integrate environmental signals and react through adjustment of growth and development. Important components of the root management strategy involve a rapid modulation of the root growth kinetics and growth direction, as well as an increase of the root system radius through formation of lateral roots (LRs). At the molecular level, such a fascinating growth and developmental flexibility of root organ requires regulatory networks that guarantee stability of the developmental program but also allows integration of various environmental inputs. The plant hormone auxin is one of the principal endogenous regulators of root system architecture by controlling primary root growth and formation of LR. In this review, we discuss recent progress in understanding molecular networks where auxin is one of the main players shaping the root system and acting as mediator between endogenous cues and environmental factors.","lang":"eng"}],"oa_version":"Published Version","pmid":1,"scopus_import":"1","main_file_link":[{"open_access":"1","url":"https://doi.org/10.1101/cshperspect.a039941"}],"month":"07","intvolume":" 13","publication_identifier":{"issn":["1943-0264"]},"publication_status":"published","language":[{"iso":"eng"}],"issue":"7","volume":13,"article_number":"a039941","project":[{"name":"Hormonal regulation of plant adaptive responses to environmental signals","_id":"2685A872-B435-11E9-9278-68D0E5697425"}],"citation":{"ama":"Cavallari N, Artner C, Benková E. Auxin-regulated lateral root organogenesis. Cold Spring Harbor Perspectives in Biology. 2021;13(7). doi:10.1101/cshperspect.a039941","apa":"Cavallari, N., Artner, C., & Benková, E. (2021). Auxin-regulated lateral root organogenesis. Cold Spring Harbor Perspectives in Biology. Cold Spring Harbor Laboratory Press. https://doi.org/10.1101/cshperspect.a039941","ieee":"N. Cavallari, C. Artner, and E. Benková, “Auxin-regulated lateral root organogenesis,” Cold Spring Harbor Perspectives in Biology, vol. 13, no. 7. Cold Spring Harbor Laboratory Press, 2021.","short":"N. Cavallari, C. Artner, E. Benková, Cold Spring Harbor Perspectives in Biology 13 (2021).","mla":"Cavallari, Nicola, et al. “Auxin-Regulated Lateral Root Organogenesis.” Cold Spring Harbor Perspectives in Biology, vol. 13, no. 7, a039941, Cold Spring Harbor Laboratory Press, 2021, doi:10.1101/cshperspect.a039941.","ista":"Cavallari N, Artner C, Benková E. 2021. Auxin-regulated lateral root organogenesis. Cold Spring Harbor Perspectives in Biology. 13(7), a039941.","chicago":"Cavallari, Nicola, Christina Artner, and Eva Benková. “Auxin-Regulated Lateral Root Organogenesis.” Cold Spring Harbor Perspectives in Biology. Cold Spring Harbor Laboratory Press, 2021. https://doi.org/10.1101/cshperspect.a039941."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","author":[{"first_name":"Nicola","id":"457160E6-F248-11E8-B48F-1D18A9856A87","last_name":"Cavallari","full_name":"Cavallari, Nicola"},{"id":"45DF286A-F248-11E8-B48F-1D18A9856A87","first_name":"Christina","last_name":"Artner","full_name":"Artner, Christina"},{"id":"38F4F166-F248-11E8-B48F-1D18A9856A87","first_name":"Eva","last_name":"Benková","orcid":"0000-0002-8510-9739","full_name":"Benková, Eva"}],"external_id":{"isi":["000692069100001"],"pmid":["33558367"]},"article_processing_charge":"No","title":"Auxin-regulated lateral root organogenesis","acknowledgement":"We apologize to all the authors whose scientific work could not be cited and discussed because of space restrictions. We thank Dr. Inge Verstraeten (ISTAustria) and Dr. Juan Carlos Montesinos-Lopez (ETH Zürich) for helpful suggestions. This work was supported by the DOC Fellowship Programme of the Austrian Academy of Sciences (25008) to C.A.","quality_controlled":"1","publisher":"Cold Spring Harbor Laboratory Press","oa":1,"isi":1,"year":"2021","day":"01","publication":"Cold Spring Harbor Perspectives in Biology","doi":"10.1101/cshperspect.a039941","date_published":"2021-07-01T00:00:00Z","date_created":"2021-03-01T10:08:32Z"},{"department":[{"_id":"GaNo"}],"date_updated":"2023-10-03T09:49:18Z","status":"public","type":"journal_article","article_type":"original","_id":"9953","volume":97,"language":[{"iso":"eng"}],"publication_identifier":{"issn":["0889-1591"]},"publication_status":"published","month":"10","intvolume":" 97","scopus_import":"1","main_file_link":[{"open_access":"1","url":"https://www.zora.uzh.ch/id/eprint/208855/1/ZORA208855.pdf"}],"oa_version":"Submitted Version","pmid":1,"abstract":[{"text":"Chronic psychological stress is one of the most important triggers and environmental risk factors for neuropsychiatric disorders. Chronic stress can influence all organs via the secretion of stress hormones, including glucocorticoids by the adrenal glands, which coordinate the stress response across the body. In the brain, glucocorticoid receptors (GR) are expressed by various cell types including microglia, which are its resident immune cells regulating stress-induced inflammatory processes. To study the roles of microglial GR under normal homeostatic conditions and following chronic stress, we generated a mouse model in which the GR gene is depleted in microglia specifically at adulthood to prevent developmental confounds. We first confirmed that microglia were depleted in GR in our model in males and females among the cingulate cortex and the hippocampus, both stress-sensitive brain regions. Then, cohorts of microglial-GR depleted and wild-type (WT) adult female mice were housed for 3 weeks in a standard or stressful condition, using a chronic unpredictable mild stress (CUMS) paradigm. CUMS induced stress-related behavior in both microglial-GR depleted and WT animals as demonstrated by a decrease of both saccharine preference and progressive ratio breakpoint. Nevertheless, the hippocampal microglial and neural mechanisms underlying the adaptation to stress occurred differently between the two genotypes. Upon CUMS exposure, microglial morphology was altered in the WT controls, without any apparent effect in microglial-GR depleted mice. Furthermore, in the standard environment condition, GR depleted-microglia showed increased expression of pro-inflammatory genes, and genes involved in microglial homeostatic functions (such as Trem2, Cx3cr1 and Mertk). On the contrary, in CUMS condition, GR depleted-microglia showed reduced expression levels of pro-inflammatory genes and increased neuroprotective as well as anti-inflammatory genes compared to WT-microglia. Moreover, in microglial-GR depleted mice, but not in WT mice, CUMS led to a significant reduction of CA1 long-term potentiation and paired-pulse ratio. Lastly, differences in adult hippocampal neurogenesis were observed between the genotypes during normal homeostatic conditions, with microglial-GR deficiency increasing the formation of newborn neurons in the dentate gyrus subgranular zone independently from stress exposure. Together, these findings indicate that, although the deletion of microglial GR did not prevent the animal’s ability to respond to stress, it contributed to modulating hippocampal functions in both standard and stressful conditions, notably by shaping the microglial response to chronic stress.","lang":"eng"}],"title":"Microglial-glucocorticoid receptor depletion alters the response of hippocampal microglia and neurons in a chronic unpredictable mild stress paradigm in female mice","author":[{"first_name":"Katherine","last_name":"Picard","full_name":"Picard, Katherine"},{"first_name":"Kanchan","full_name":"Bisht, Kanchan","last_name":"Bisht"},{"last_name":"Poggini","full_name":"Poggini, Silvia","first_name":"Silvia"},{"last_name":"Garofalo","full_name":"Garofalo, Stefano","first_name":"Stefano"},{"last_name":"Golia","full_name":"Golia, Maria Teresa","first_name":"Maria Teresa"},{"id":"36035796-5ACA-11E9-A75E-7AF2E5697425","first_name":"Bernadette","last_name":"Basilico","orcid":"0000-0003-1843-3173","full_name":"Basilico, Bernadette"},{"last_name":"Abdallah","full_name":"Abdallah, Fatima","first_name":"Fatima"},{"first_name":"Naomi","full_name":"Ciano Albanese, Naomi","last_name":"Ciano Albanese"},{"last_name":"Amrein","full_name":"Amrein, Irmgard","first_name":"Irmgard"},{"first_name":"Nathalie","full_name":"Vernoux, Nathalie","last_name":"Vernoux"},{"first_name":"Kaushik","full_name":"Sharma, Kaushik","last_name":"Sharma"},{"last_name":"Hui","full_name":"Hui, Chin Wai","first_name":"Chin Wai"},{"first_name":"Julie","full_name":"C. Savage, Julie","last_name":"C. Savage"},{"first_name":"Cristina","full_name":"Limatola, Cristina","last_name":"Limatola"},{"first_name":"Davide","last_name":"Ragozzino","full_name":"Ragozzino, Davide"},{"first_name":"Laura","last_name":"Maggi","full_name":"Maggi, Laura"},{"full_name":"Branchi, Igor","last_name":"Branchi","first_name":"Igor"},{"first_name":"Marie Ève","full_name":"Tremblay, Marie Ève","last_name":"Tremblay"}],"article_processing_charge":"No","external_id":{"isi":["000702878400007"],"pmid":["34343616"]},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"ieee":"K. Picard et al., “Microglial-glucocorticoid receptor depletion alters the response of hippocampal microglia and neurons in a chronic unpredictable mild stress paradigm in female mice,” Brain, Behavior, and Immunity, vol. 97. Elsevier, pp. 423–439, 2021.","short":"K. Picard, K. Bisht, S. Poggini, S. Garofalo, M.T. Golia, B. Basilico, F. Abdallah, N. Ciano Albanese, I. Amrein, N. Vernoux, K. Sharma, C.W. Hui, J. C. Savage, C. Limatola, D. Ragozzino, L. Maggi, I. Branchi, M.È. Tremblay, Brain, Behavior, and Immunity 97 (2021) 423–439.","apa":"Picard, K., Bisht, K., Poggini, S., Garofalo, S., Golia, M. T., Basilico, B., … Tremblay, M. È. (2021). Microglial-glucocorticoid receptor depletion alters the response of hippocampal microglia and neurons in a chronic unpredictable mild stress paradigm in female mice. Brain, Behavior, and Immunity. Elsevier. https://doi.org/10.1016/j.bbi.2021.07.022","ama":"Picard K, Bisht K, Poggini S, et al. Microglial-glucocorticoid receptor depletion alters the response of hippocampal microglia and neurons in a chronic unpredictable mild stress paradigm in female mice. Brain, Behavior, and Immunity. 2021;97:423-439. doi:10.1016/j.bbi.2021.07.022","mla":"Picard, Katherine, et al. “Microglial-Glucocorticoid Receptor Depletion Alters the Response of Hippocampal Microglia and Neurons in a Chronic Unpredictable Mild Stress Paradigm in Female Mice.” Brain, Behavior, and Immunity, vol. 97, Elsevier, 2021, pp. 423–39, doi:10.1016/j.bbi.2021.07.022.","ista":"Picard K, Bisht K, Poggini S, Garofalo S, Golia MT, Basilico B, Abdallah F, Ciano Albanese N, Amrein I, Vernoux N, Sharma K, Hui CW, C. Savage J, Limatola C, Ragozzino D, Maggi L, Branchi I, Tremblay MÈ. 2021. Microglial-glucocorticoid receptor depletion alters the response of hippocampal microglia and neurons in a chronic unpredictable mild stress paradigm in female mice. Brain, Behavior, and Immunity. 97, 423–439.","chicago":"Picard, Katherine, Kanchan Bisht, Silvia Poggini, Stefano Garofalo, Maria Teresa Golia, Bernadette Basilico, Fatima Abdallah, et al. “Microglial-Glucocorticoid Receptor Depletion Alters the Response of Hippocampal Microglia and Neurons in a Chronic Unpredictable Mild Stress Paradigm in Female Mice.” Brain, Behavior, and Immunity. Elsevier, 2021. https://doi.org/10.1016/j.bbi.2021.07.022."},"date_published":"2021-10-01T00:00:00Z","doi":"10.1016/j.bbi.2021.07.022","date_created":"2021-08-22T22:01:21Z","page":"423-439","day":"01","publication":"Brain, Behavior, and Immunity","isi":1,"year":"2021","publisher":"Elsevier","quality_controlled":"1","oa":1,"acknowledgement":"We acknowledge that Université Laval stands on the traditional and unceded land of the Huron-Wendat peoples; and that the University of Victoria exists on the territory of the Lekwungen peoples and that the Songhees, Esquimalt and WSÁNEÆ peoples have relationships to this land. We thank Emmanuel Planel for the access to the epifluorescence microscope and Julie-Christine Lévesque at the Bioimaging Platform of CRCHU de Québec-Université Laval for technical assistance. We also thank the Centre for Advanced Materials and Related Technology for the access to the confocal microscope with Airyscan. K.P. was supported by a doctoral scholarship from Fonds de Recherche du Québec – Santé (FRQS), an excellence award from Fondation du CHU de Québec, as well as from Centre Thématique de Recherche en Neurosciences and from Fondation Famille-Choquette. K.B. was supported by excellence scholarships from Université Laval and Fondation du CHU de Québec. S.G. is supported by FIRC-AIRC fellowship for Italy 22329/2018 and by Pilot ARISLA NKINALS 2019. C.W.H. and J.C.S. were supported by postdoctoral fellowships from FRQS. This study was funded by a Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery grant (RGPIN-2014-05308) awarded to M.E.T., by ERANET neuron 2017 MicroSynDep to M.E.T. and I.B., and by the Italian Ministry of Health, grant RF-2018-12367249 to I.B, by PRIN 2017, AIRC 2019 and Ministero della Salute RF2018 to C.L. M.E.T. is a Tier II Canada Research Chair in Neurobiology of Aging and Cognition."},{"_id":"10327","keyword":["CuxS","PbS","energy conversion","nanocomposite","nanoparticle","solution synthesis","thermoelectric"],"status":"public","type":"journal_article","article_type":"original","date_updated":"2023-10-03T09:55:33Z","department":[{"_id":"MaIb"}],"oa_version":"Submitted Version","pmid":1,"abstract":[{"text":"Composite materials offer numerous advantages in a wide range of applications, including thermoelectrics. Here, semiconductor–metal composites are produced by just blending nanoparticles of a sulfide semiconductor obtained in aqueous solution and at room temperature with a metallic Cu powder. The obtained blend is annealed in a reducing atmosphere and afterward consolidated into dense polycrystalline pellets through spark plasma sintering (SPS). We observe that, during the annealing process, the presence of metallic copper activates a partial reduction of the PbS, resulting in the formation of PbS–Pb–CuxS composites. The presence of metallic lead during the SPS process habilitates the liquid-phase sintering of the composite. Besides, by comparing the transport properties of PbS, the PbS–Pb–CuxS composites, and PbS–CuxS composites obtained by blending PbS and CuxS nanoparticles, we demonstrate that the presence of metallic lead decisively contributes to a strong increase of the charge carrier concentration through spillover of charge carriers enabled by the low work function of lead. The increase in charge carrier concentration translates into much higher electrical conductivities and moderately lower Seebeck coefficients. These properties translate into power factors up to 2.1 mW m–1 K–2 at ambient temperature, well above those of PbS and PbS + CuxS. Additionally, the presence of multiple phases in the final composite results in a notable decrease in the lattice thermal conductivity. Overall, the introduction of metallic copper in the initial blend results in a significant improvement of the thermoelectric performance of PbS, reaching a dimensionless thermoelectric figure of merit ZT = 1.1 at 750 K, which represents about a 400% increase over bare PbS. Besides, an average ZTave = 0.72 in the temperature range 320–773 K is demonstrated.","lang":"eng"}],"intvolume":" 13","month":"10","main_file_link":[{"open_access":"1","url":"https://upcommons.upc.edu/bitstream/2117/363528/1/Pb%20mengyao.pdf"}],"scopus_import":"1","language":[{"iso":"eng"}],"publication_status":"published","publication_identifier":{"issn":["1944-8244"],"eissn":["1944-8252"]},"ec_funded":1,"volume":13,"issue":"43","project":[{"grant_number":"754411","name":"ISTplus - Postdoctoral Fellowships","_id":"260C2330-B435-11E9-9278-68D0E5697425","call_identifier":"H2020"},{"name":"HighTE: The Werner Siemens Laboratory for the High Throughput Discovery of Semiconductors for Waste Heat Recovery","_id":"9B8F7476-BA93-11EA-9121-9846C619BF3A"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"mla":"Li, Mengyao, et al. “PbS–Pb–CuxS Composites for Thermoelectric Application.” ACS Applied Materials and Interfaces, vol. 13, no. 43, American Chemical Society , 2021, pp. 51373–51382, doi:10.1021/acsami.1c15609.","ama":"Li M, Liu Y, Zhang Y, et al. PbS–Pb–CuxS composites for thermoelectric application. ACS Applied Materials and Interfaces. 2021;13(43):51373–51382. doi:10.1021/acsami.1c15609","apa":"Li, M., Liu, Y., Zhang, Y., Han, X., Xiao, K., Nabahat, M., … Cabot, A. (2021). PbS–Pb–CuxS composites for thermoelectric application. ACS Applied Materials and Interfaces. American Chemical Society . https://doi.org/10.1021/acsami.1c15609","ieee":"M. Li et al., “PbS–Pb–CuxS composites for thermoelectric application,” ACS Applied Materials and Interfaces, vol. 13, no. 43. American Chemical Society , pp. 51373–51382, 2021.","short":"M. Li, Y. Liu, Y. Zhang, X. Han, K. Xiao, M. Nabahat, J. Arbiol, J. Llorca, M. Ibáñez, A. Cabot, ACS Applied Materials and Interfaces 13 (2021) 51373–51382.","chicago":"Li, Mengyao, Yu Liu, Yu Zhang, Xu Han, Ke Xiao, Mehran Nabahat, Jordi Arbiol, Jordi Llorca, Maria Ibáñez, and Andreu Cabot. “PbS–Pb–CuxS Composites for Thermoelectric Application.” ACS Applied Materials and Interfaces. American Chemical Society , 2021. https://doi.org/10.1021/acsami.1c15609.","ista":"Li M, Liu Y, Zhang Y, Han X, Xiao K, Nabahat M, Arbiol J, Llorca J, Ibáñez M, Cabot A. 2021. PbS–Pb–CuxS composites for thermoelectric application. ACS Applied Materials and Interfaces. 13(43), 51373–51382."},"title":"PbS–Pb–CuxS composites for thermoelectric application","article_processing_charge":"No","external_id":{"isi":["000715852100070"],"pmid":["34665616"]},"author":[{"first_name":"Mengyao","last_name":"Li","full_name":"Li, Mengyao"},{"full_name":"Liu, Yu","orcid":"0000-0001-7313-6740","last_name":"Liu","id":"2A70014E-F248-11E8-B48F-1D18A9856A87","first_name":"Yu"},{"full_name":"Zhang, Yu","last_name":"Zhang","first_name":"Yu"},{"first_name":"Xu","full_name":"Han, Xu","last_name":"Han"},{"first_name":"Ke","full_name":"Xiao, Ke","last_name":"Xiao"},{"first_name":"Mehran","last_name":"Nabahat","full_name":"Nabahat, Mehran"},{"first_name":"Jordi","last_name":"Arbiol","full_name":"Arbiol, Jordi"},{"last_name":"Llorca","full_name":"Llorca, Jordi","first_name":"Jordi"},{"orcid":"0000-0001-5013-2843","full_name":"Ibáñez, Maria","last_name":"Ibáñez","first_name":"Maria","id":"43C61214-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Cabot","full_name":"Cabot, Andreu","first_name":"Andreu"}],"acknowledgement":"This work was supported by the European Regional Development Funds. M.L., Y.Z., X.H., and K.X. thank the China Scholarship Council for scholarship support. M. I. has been financially supported by IST Austria and the Werner Siemens Foundation. Y.L. acknowledges funding from the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant agreement No. 754411. J.L. is a Serra Húnter fellow and is grateful to ICREA Academia program and projects MICINN/FEDER RTI2018-093996-B-C31 and GC 2017 SGR 128. ICN2 acknowledges funding from Generalitat de Catalunya 2017 SGR 327 and the Spanish MINECO project NANOGEN (PID2020-116093RB-C43). ICN2 was supported by the Severo Ochoa program from Spanish MINECO (grant no. SEV-2017-0706) and was funded by the CERCA Programme/Generalitat de Catalunya. X.H. thanks China Scholarship Council for scholarship support (201804910551). Part of the present work was performed in the framework of Universitat Autònoma de Barcelona Materials Science Ph.D. program.","oa":1,"publisher":"American Chemical Society ","quality_controlled":"1","publication":"ACS Applied Materials and Interfaces","day":"19","year":"2021","isi":1,"date_created":"2021-11-21T23:01:30Z","date_published":"2021-10-19T00:00:00Z","doi":"10.1021/acsami.1c15609","page":"51373–51382"},{"title":"Effect of the annealing atmosphere on crystal phase and thermoelectric properties of copper sulfide","external_id":{"pmid":["33645986"],"isi":["000634569100106"]},"article_processing_charge":"No","author":[{"last_name":"Li","full_name":"Li, Mengyao","first_name":"Mengyao"},{"last_name":"Liu","orcid":"0000-0001-7313-6740","full_name":"Liu, Yu","id":"2A70014E-F248-11E8-B48F-1D18A9856A87","first_name":"Yu"},{"first_name":"Yu","full_name":"Zhang, Yu","last_name":"Zhang"},{"first_name":"Xu","full_name":"Han, Xu","last_name":"Han"},{"first_name":"Ting","full_name":"Zhang, Ting","last_name":"Zhang"},{"last_name":"Zuo","full_name":"Zuo, Yong","first_name":"Yong"},{"first_name":"Chenyang","full_name":"Xie, Chenyang","last_name":"Xie"},{"full_name":"Xiao, Ke","last_name":"Xiao","first_name":"Ke"},{"first_name":"Jordi","last_name":"Arbiol","full_name":"Arbiol, Jordi"},{"last_name":"Llorca","full_name":"Llorca, Jordi","first_name":"Jordi"},{"first_name":"Maria","id":"43C61214-F248-11E8-B48F-1D18A9856A87","last_name":"Ibáñez","orcid":"0000-0001-5013-2843","full_name":"Ibáñez, Maria"},{"first_name":"Junfeng","last_name":"Liu","full_name":"Liu, Junfeng"},{"last_name":"Cabot","full_name":"Cabot, Andreu","first_name":"Andreu"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"chicago":"Li, Mengyao, Yu Liu, Yu Zhang, Xu Han, Ting Zhang, Yong Zuo, Chenyang Xie, et al. “Effect of the Annealing Atmosphere on Crystal Phase and Thermoelectric Properties of Copper Sulfide.” ACS Nano. American Chemical Society , 2021. https://doi.org/10.1021/acsnano.0c09866.","ista":"Li M, Liu Y, Zhang Y, Han X, Zhang T, Zuo Y, Xie C, Xiao K, Arbiol J, Llorca J, Ibáñez M, Liu J, Cabot A. 2021. Effect of the annealing atmosphere on crystal phase and thermoelectric properties of copper sulfide. ACS Nano. 15(3), 4967–4978.","mla":"Li, Mengyao, et al. “Effect of the Annealing Atmosphere on Crystal Phase and Thermoelectric Properties of Copper Sulfide.” ACS Nano, vol. 15, no. 3, American Chemical Society , 2021, pp. 4967–4978, doi:10.1021/acsnano.0c09866.","ama":"Li M, Liu Y, Zhang Y, et al. Effect of the annealing atmosphere on crystal phase and thermoelectric properties of copper sulfide. ACS Nano. 2021;15(3):4967–4978. doi:10.1021/acsnano.0c09866","apa":"Li, M., Liu, Y., Zhang, Y., Han, X., Zhang, T., Zuo, Y., … Cabot, A. (2021). Effect of the annealing atmosphere on crystal phase and thermoelectric properties of copper sulfide. ACS Nano. American Chemical Society . https://doi.org/10.1021/acsnano.0c09866","ieee":"M. Li et al., “Effect of the annealing atmosphere on crystal phase and thermoelectric properties of copper sulfide,” ACS Nano, vol. 15, no. 3. American Chemical Society , pp. 4967–4978, 2021.","short":"M. Li, Y. Liu, Y. Zhang, X. Han, T. Zhang, Y. Zuo, C. Xie, K. Xiao, J. Arbiol, J. Llorca, M. Ibáñez, J. Liu, A. Cabot, ACS Nano 15 (2021) 4967–4978."},"oa":1,"publisher":"American Chemical Society ","quality_controlled":"1","acknowledgement":"This work was supported by the European Regional Development Funds. M.Y.L., X.H., T.Z., and K.X. thank the China Scholarship Council for scholarship support. M.I. acknowledges financial support from IST Austria. J.L. acknowledges support from the National Natural Science Foundation of China (No. 22008091), the funding for scientific research startup of Jiangsu University (No. 19JDG044), and Jiangsu Provincial Program for High-Level Innovative and Entrepreneurial Talents Introduction. J.L. is a Serra Húnter fellow and is grateful to the ICREA Academia program and projects MICINN/FEDER RTI2018-093996-B-C31 and GC 2017 SGR 128. ICN2 acknowledges funding from Generalitat de Catalunya 2017 SGR 327 and the Spanish MINECO ENE2017-85087-C3. ICN2 is supported by the Severo Ochoa program from Spanish MINECO (Grant No. SEV-2017-0706) and is funded by the CERCA Programme/Generalitat de Catalunya. Part of the present work has been performed in the framework of Universitat Autònoma de Barcelona Materials Science PhD program. T.Z. has received funding from the CSC-UAB PhD scholarship program.","date_created":"2021-03-10T20:12:45Z","doi":"10.1021/acsnano.0c09866","date_published":"2021-03-01T00:00:00Z","page":"4967–4978","publication":"ACS Nano","day":"01","year":"2021","isi":1,"keyword":["General Engineering","General Physics and Astronomy","General Materials Science"],"status":"public","article_type":"original","type":"journal_article","_id":"9235","department":[{"_id":"MaIb"}],"date_updated":"2023-10-03T09:59:55Z","intvolume":" 15","month":"03","main_file_link":[{"open_access":"1","url":"https://upcommons.upc.edu/bitstream/handle/2117/363528/Pb%20mengyao.pdf?sequence=1&isAllowed=y"}],"scopus_import":"1","oa_version":"Submitted Version","pmid":1,"abstract":[{"text":"Cu2–xS has become one of the most promising thermoelectric materials for application in the middle-high temperature range. Its advantages include the abundance, low cost, and safety of its elements and a high performance at relatively elevated temperatures. However, stability issues limit its operation current and temperature, thus calling for the optimization of the material performance in the middle temperature range. Here, we present a synthetic protocol for large scale production of covellite CuS nanoparticles at ambient temperature and atmosphere, and using water as a solvent. The crystal phase and stoichiometry of the particles are afterward tuned through an annealing process at a moderate temperature under inert or reducing atmosphere. While annealing under argon results in Cu1.8S nanopowder with a rhombohedral crystal phase, annealing in an atmosphere containing hydrogen leads to tetragonal Cu1.96S. High temperature X-ray diffraction analysis shows the material annealed in argon to transform to the cubic phase at ca. 400 K, while the material annealed in the presence of hydrogen undergoes two phase transitions, first to hexagonal and then to the cubic structure. The annealing atmosphere, temperature, and time allow adjustment of the density of copper vacancies and thus tuning of the charge carrier concentration and material transport properties. In this direction, the material annealed under Ar is characterized by higher electrical conductivities but lower Seebeck coefficients than the material annealed in the presence of hydrogen. By optimizing the charge carrier concentration through the annealing time, Cu2–xS with record figures of merit in the middle temperature range, up to 1.41 at 710 K, is obtained. We finally demonstrate that this strategy, based on a low-cost and scalable solution synthesis process, is also suitable for the production of high performance Cu2–xS layers using high throughput and cost-effective printing technologies.","lang":"eng"}],"issue":"3","volume":15,"language":[{"iso":"eng"}],"publication_status":"published","publication_identifier":{"issn":["1936-0851"],"eissn":["1936-086X"]}},{"acknowledgement":"MS acknowledges the support by Australian Research Council funding through the ARC Training Centre for M3D Innovation (IC180100008). MS thanks M. Hanifpour and N. Francois for their input and valuable discussions. This project has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme, grant no. 788183 and from the Wittgenstein Prize, Austrian Science Fund (FWF), grant no. Z 342-N31.","oa":1,"publisher":"Royal Society of Chemistry ","quality_controlled":"1","year":"2021","isi":1,"has_accepted_license":"1","publication":"Soft Matter","day":"20","page":"9107-9115","date_created":"2021-10-31T23:01:30Z","doi":"10.1039/d1sm00774b","date_published":"2021-10-20T00:00:00Z","project":[{"call_identifier":"H2020","_id":"266A2E9E-B435-11E9-9278-68D0E5697425","name":"Alpha Shape Theory Extended","grant_number":"788183"},{"grant_number":"Z00342","name":"The Wittgenstein Prize","_id":"268116B8-B435-11E9-9278-68D0E5697425","call_identifier":"FWF"}],"citation":{"ista":"Osang GF, Edelsbrunner H, Saadatfar M. 2021. Topological signatures and stability of hexagonal close packing and Barlow stackings. Soft Matter. 17(40), 9107–9115.","chicago":"Osang, Georg F, Herbert Edelsbrunner, and Mohammad Saadatfar. “Topological Signatures and Stability of Hexagonal Close Packing and Barlow Stackings.” Soft Matter. Royal Society of Chemistry , 2021. https://doi.org/10.1039/d1sm00774b.","ama":"Osang GF, Edelsbrunner H, Saadatfar M. Topological signatures and stability of hexagonal close packing and Barlow stackings. Soft Matter. 2021;17(40):9107-9115. doi:10.1039/d1sm00774b","apa":"Osang, G. F., Edelsbrunner, H., & Saadatfar, M. (2021). Topological signatures and stability of hexagonal close packing and Barlow stackings. Soft Matter. Royal Society of Chemistry . https://doi.org/10.1039/d1sm00774b","ieee":"G. F. Osang, H. Edelsbrunner, and M. Saadatfar, “Topological signatures and stability of hexagonal close packing and Barlow stackings,” Soft Matter, vol. 17, no. 40. Royal Society of Chemistry , pp. 9107–9115, 2021.","short":"G.F. Osang, H. Edelsbrunner, M. Saadatfar, Soft Matter 17 (2021) 9107–9115.","mla":"Osang, Georg F., et al. “Topological Signatures and Stability of Hexagonal Close Packing and Barlow Stackings.” Soft Matter, vol. 17, no. 40, Royal Society of Chemistry , 2021, pp. 9107–15, doi:10.1039/d1sm00774b."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","external_id":{"isi":["000700090000001"],"pmid":["34569592"]},"article_processing_charge":"No","author":[{"last_name":"Osang","orcid":"0000-0002-8882-5116","full_name":"Osang, Georg F","first_name":"Georg F","id":"464B40D6-F248-11E8-B48F-1D18A9856A87"},{"id":"3FB178DA-F248-11E8-B48F-1D18A9856A87","first_name":"Herbert","full_name":"Edelsbrunner, Herbert","orcid":"0000-0002-9823-6833","last_name":"Edelsbrunner"},{"first_name":"Mohammad","last_name":"Saadatfar","full_name":"Saadatfar, Mohammad"}],"title":"Topological signatures and stability of hexagonal close packing and Barlow stackings","abstract":[{"lang":"eng","text":"Two common representations of close packings of identical spheres consisting of hexagonal layers, called Barlow stackings, appear abundantly in minerals and metals. These motifs, however, occupy an identical portion of space and bear identical first-order topological signatures as measured by persistent homology. Here we present a novel method based on k-fold covers that unambiguously distinguishes between these patterns. Moreover, our approach provides topological evidence that the FCC motif is the more stable of the two in the context of evolving experimental sphere packings during the transition from disordered to an ordered state. We conclude that our approach can be generalised to distinguish between various Barlow stackings manifested in minerals and metals."}],"oa_version":"Submitted Version","pmid":1,"scopus_import":"1","intvolume":" 17","month":"10","publication_status":"published","publication_identifier":{"issn":["1744-683X"],"eissn":["1744-6848"]},"language":[{"iso":"eng"}],"file":[{"success":1,"file_id":"14385","checksum":"b4da0c420530295e61b153960f6cb350","content_type":"application/pdf","relation":"main_file","access_level":"open_access","file_name":"2021_SoftMatter_acceptedversion_Osang.pdf","date_created":"2023-10-03T09:21:42Z","file_size":4678788,"date_updated":"2023-10-03T09:21:42Z","creator":"dernst"}],"ec_funded":1,"volume":17,"issue":"40","_id":"10204","article_type":"original","type":"journal_article","status":"public","date_updated":"2023-10-03T09:24:27Z","ddc":["540"],"file_date_updated":"2023-10-03T09:21:42Z","department":[{"_id":"HeEd"}]},{"project":[{"_id":"25517E86-B435-11E9-9278-68D0E5697425","call_identifier":"FP7","grant_number":"335497","name":"Towards Spin qubits and Majorana fermions in Germanium selfassembled hut-wires"}],"article_number":"9420817","author":[{"last_name":"Gao","full_name":"Gao, Fei","first_name":"Fei"},{"first_name":"Jie Yin","full_name":"Zhang, Jie Yin","last_name":"Zhang"},{"last_name":"Wang","full_name":"Wang, Jian Huan","first_name":"Jian Huan"},{"last_name":"Ming","full_name":"Ming, Ming","first_name":"Ming"},{"full_name":"Wang, Tina","last_name":"Wang","first_name":"Tina"},{"first_name":"Jian Jun","full_name":"Zhang, Jian Jun","last_name":"Zhang"},{"last_name":"Watzinger","full_name":"Watzinger, Hannes","first_name":"Hannes","id":"35DF8E50-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Kukucka, Josip","last_name":"Kukucka","id":"3F5D8856-F248-11E8-B48F-1D18A9856A87","first_name":"Josip"},{"full_name":"Vukušić, Lada","orcid":"0000-0003-2424-8636","last_name":"Vukušić","first_name":"Lada","id":"31E9F056-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Katsaros, Georgios","orcid":"0000-0001-8342-202X","last_name":"Katsaros","id":"38DB5788-F248-11E8-B48F-1D18A9856A87","first_name":"Georgios"},{"full_name":"Wang, Ke","last_name":"Wang","first_name":"Ke"},{"first_name":"Gang","full_name":"Xu, Gang","last_name":"Xu"},{"full_name":"Li, Hai Ou","last_name":"Li","first_name":"Hai Ou"},{"full_name":"Guo, Guo Ping","last_name":"Guo","first_name":"Guo Ping"}],"external_id":{"isi":["000675595800006"]},"article_processing_charge":"No","title":"Ge/Si quantum wires for quantum computing","citation":{"mla":"Gao, Fei, et al. “Ge/Si Quantum Wires for Quantum Computing.” 2021 5th IEEE Electron Devices Technology and Manufacturing Conference, EDTM 2021, 9420817, IEEE, 2021, doi:10.1109/EDTM50988.2021.9420817.","apa":"Gao, F., Zhang, J. Y., Wang, J. H., Ming, M., Wang, T., Zhang, J. J., … Guo, G. P. (2021). Ge/Si quantum wires for quantum computing. In 2021 5th IEEE Electron Devices Technology and Manufacturing Conference, EDTM 2021. Virtual, Online: IEEE. https://doi.org/10.1109/EDTM50988.2021.9420817","ama":"Gao F, Zhang JY, Wang JH, et al. Ge/Si quantum wires for quantum computing. In: 2021 5th IEEE Electron Devices Technology and Manufacturing Conference, EDTM 2021. IEEE; 2021. doi:10.1109/EDTM50988.2021.9420817","short":"F. Gao, J.Y. Zhang, J.H. Wang, M. Ming, T. Wang, J.J. Zhang, H. Watzinger, J. Kukucka, L. Vukušić, G. Katsaros, K. Wang, G. Xu, H.O. Li, G.P. Guo, in:, 2021 5th IEEE Electron Devices Technology and Manufacturing Conference, EDTM 2021, IEEE, 2021.","ieee":"F. Gao et al., “Ge/Si quantum wires for quantum computing,” in 2021 5th IEEE Electron Devices Technology and Manufacturing Conference, EDTM 2021, Virtual, Online, 2021.","chicago":"Gao, Fei, Jie Yin Zhang, Jian Huan Wang, Ming Ming, Tina Wang, Jian Jun Zhang, Hannes Watzinger, et al. “Ge/Si Quantum Wires for Quantum Computing.” In 2021 5th IEEE Electron Devices Technology and Manufacturing Conference, EDTM 2021. IEEE, 2021. https://doi.org/10.1109/EDTM50988.2021.9420817.","ista":"Gao F, Zhang JY, Wang JH, Ming M, Wang T, Zhang JJ, Watzinger H, Kukucka J, Vukušić L, Katsaros G, Wang K, Xu G, Li HO, Guo GP. 2021. Ge/Si quantum wires for quantum computing. 2021 5th IEEE Electron Devices Technology and Manufacturing Conference, EDTM 2021. EDTM: IEEE Electron Devices Technology and Manufacturing Conference, 9420817."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","quality_controlled":"1","publisher":"IEEE","acknowledgement":"This work was supported by the National Key R&D Program of China (Grant No. 2016YFA0301700) and the ERC Starting Grant no. 335497.","date_published":"2021-04-08T00:00:00Z","doi":"10.1109/EDTM50988.2021.9420817","date_created":"2021-06-06T22:01:29Z","isi":1,"year":"2021","day":"08","publication":"2021 5th IEEE Electron Devices Technology and Manufacturing Conference, EDTM 2021","type":"conference","conference":{"name":"EDTM: IEEE Electron Devices Technology and Manufacturing Conference","start_date":"2021-04-08","end_date":"2021-04-11","location":"Virtual, Online"},"status":"public","_id":"9464","department":[{"_id":"GeKa"}],"date_updated":"2023-10-03T12:51:59Z","scopus_import":"1","month":"04","abstract":[{"text":"We firstly introduce the self-assembled growth of highly uniform Ge quantum wires with controllable position, distance and length on patterned Si (001) substrates. We then present the electrically tunable strong spin-orbit coupling, the first Ge hole spin qubit and ultrafast operation of hole spin qubit in the Ge/Si quantum wires.","lang":"eng"}],"oa_version":"None","ec_funded":1,"publication_identifier":{"isbn":["9781728181769"]},"publication_status":"published","language":[{"iso":"eng"}]},{"article_number":"27","user_id":"D865714E-FA4E-11E9-B85B-F5C5E5697425","citation":{"chicago":"Corbet, René, Michael Kerber, Michael Lesnick, and Georg F Osang. “Computing the Multicover Bifiltration.” In Leibniz International Proceedings in Informatics, Vol. 189. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2021. https://doi.org/10.4230/LIPIcs.SoCG.2021.27.","ista":"Corbet R, Kerber M, Lesnick M, Osang GF. 2021. Computing the multicover bifiltration. Leibniz International Proceedings in Informatics. SoCG: International Symposium on Computational Geometry, LIPIcs, vol. 189, 27.","mla":"Corbet, René, et al. “Computing the Multicover Bifiltration.” Leibniz International Proceedings in Informatics, vol. 189, 27, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2021, doi:10.4230/LIPIcs.SoCG.2021.27.","apa":"Corbet, R., Kerber, M., Lesnick, M., & Osang, G. F. (2021). Computing the multicover bifiltration. In Leibniz International Proceedings in Informatics (Vol. 189). Online: Schloss Dagstuhl - Leibniz-Zentrum für Informatik. https://doi.org/10.4230/LIPIcs.SoCG.2021.27","ama":"Corbet R, Kerber M, Lesnick M, Osang GF. Computing the multicover bifiltration. In: Leibniz International Proceedings in Informatics. Vol 189. Schloss Dagstuhl - Leibniz-Zentrum für Informatik; 2021. doi:10.4230/LIPIcs.SoCG.2021.27","ieee":"R. Corbet, M. Kerber, M. Lesnick, and G. F. Osang, “Computing the multicover bifiltration,” in Leibniz International Proceedings in Informatics, Online, 2021, vol. 189.","short":"R. Corbet, M. Kerber, M. Lesnick, G.F. Osang, in:, Leibniz International Proceedings in Informatics, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2021."},"title":"Computing the multicover bifiltration","external_id":{"arxiv":["2103.07823"]},"article_processing_charge":"No","author":[{"first_name":"René","last_name":"Corbet","full_name":"Corbet, René"},{"first_name":"Michael","last_name":"Kerber","full_name":"Kerber, Michael"},{"first_name":"Michael","last_name":"Lesnick","full_name":"Lesnick, Michael"},{"last_name":"Osang","orcid":"0000-0002-8882-5116","full_name":"Osang, Georg F","id":"464B40D6-F248-11E8-B48F-1D18A9856A87","first_name":"Georg F"}],"acknowledgement":"The authors want to thank the reviewers for many helpful comments and suggestions.","oa":1,"publisher":"Schloss Dagstuhl - Leibniz-Zentrum für Informatik","quality_controlled":"1","publication":"Leibniz International Proceedings in Informatics","day":"02","year":"2021","has_accepted_license":"1","date_created":"2021-06-27T22:01:49Z","doi":"10.4230/LIPIcs.SoCG.2021.27","date_published":"2021-06-02T00:00:00Z","_id":"9605","status":"public","conference":{"name":"SoCG: International Symposium on Computational Geometry","start_date":"2021-06-07","end_date":"2021-06-11","location":"Online"},"tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"type":"conference","ddc":["516"],"date_updated":"2023-10-04T12:03:39Z","department":[{"_id":"HeEd"}],"file_date_updated":"2021-06-28T12:40:47Z","oa_version":"Published Version","abstract":[{"lang":"eng","text":"Given a finite set A ⊂ ℝ^d, let Cov_{r,k} denote the set of all points within distance r to at least k points of A. Allowing r and k to vary, we obtain a 2-parameter family of spaces that grow larger when r increases or k decreases, called the multicover bifiltration. Motivated by the problem of computing the homology of this bifiltration, we introduce two closely related combinatorial bifiltrations, one polyhedral and the other simplicial, which are both topologically equivalent to the multicover bifiltration and far smaller than a Čech-based model considered in prior work of Sheehy. Our polyhedral construction is a bifiltration of the rhomboid tiling of Edelsbrunner and Osang, and can be efficiently computed using a variant of an algorithm given by these authors as well. Using an implementation for dimension 2 and 3, we provide experimental results. Our simplicial construction is useful for understanding the polyhedral construction and proving its correctness. "}],"intvolume":" 189","month":"06","scopus_import":"1","alternative_title":["LIPIcs"],"language":[{"iso":"eng"}],"file":[{"date_updated":"2021-06-28T12:40:47Z","file_size":"1367983","creator":"cziletti","date_created":"2021-06-28T12:40:47Z","file_name":"2021_LIPIcs_Corbet.pdf","content_type":"application/pdf","access_level":"open_access","relation":"main_file","checksum":"0de217501e7ba8b267d58deed0d51761","file_id":"9610","success":1}],"publication_status":"published","publication_identifier":{"issn":["18688969"],"isbn":["9783959771849"]},"license":"https://creativecommons.org/licenses/by/4.0/","related_material":{"link":[{"relation":"extended_version","url":"https://arxiv.org/abs/2103.07823"}],"record":[{"relation":"later_version","status":"public","id":"12709"}]},"volume":189},{"project":[{"_id":"260C2330-B435-11E9-9278-68D0E5697425","call_identifier":"H2020","grant_number":"754411","name":"ISTplus - Postdoctoral Fellowships"}],"title":"Tracing isomanifolds in Rd in time polynomial in d using Coxeter-Freudenthal-Kuhn triangulations","article_processing_charge":"No","author":[{"last_name":"Boissonnat","full_name":"Boissonnat, Jean-Daniel","first_name":"Jean-Daniel"},{"full_name":"Kachanovich, Siargey","last_name":"Kachanovich","first_name":"Siargey"},{"last_name":"Wintraecken","orcid":"0000-0002-7472-2220","full_name":"Wintraecken, Mathijs","first_name":"Mathijs","id":"307CFBC8-F248-11E8-B48F-1D18A9856A87"}],"user_id":"D865714E-FA4E-11E9-B85B-F5C5E5697425","citation":{"ieee":"J.-D. Boissonnat, S. Kachanovich, and M. Wintraecken, “Tracing isomanifolds in Rd in time polynomial in d using Coxeter-Freudenthal-Kuhn triangulations,” in 37th International Symposium on Computational Geometry (SoCG 2021), Virtual, 2021, vol. 189, p. 17:1-17:16.","short":"J.-D. Boissonnat, S. Kachanovich, M. Wintraecken, in:, 37th International Symposium on Computational Geometry (SoCG 2021), Schloss Dagstuhl - Leibniz-Zentrum für Informatik, Dagstuhl, Germany, 2021, p. 17:1-17:16.","ama":"Boissonnat J-D, Kachanovich S, Wintraecken M. Tracing isomanifolds in Rd in time polynomial in d using Coxeter-Freudenthal-Kuhn triangulations. In: 37th International Symposium on Computational Geometry (SoCG 2021). Vol 189. Leibniz International Proceedings in Informatics (LIPIcs). Dagstuhl, Germany: Schloss Dagstuhl - Leibniz-Zentrum für Informatik; 2021:17:1-17:16. doi:10.4230/LIPIcs.SoCG.2021.17","apa":"Boissonnat, J.-D., Kachanovich, S., & Wintraecken, M. (2021). Tracing isomanifolds in Rd in time polynomial in d using Coxeter-Freudenthal-Kuhn triangulations. In 37th International Symposium on Computational Geometry (SoCG 2021) (Vol. 189, p. 17:1-17:16). Dagstuhl, Germany: Schloss Dagstuhl - Leibniz-Zentrum für Informatik. https://doi.org/10.4230/LIPIcs.SoCG.2021.17","mla":"Boissonnat, Jean-Daniel, et al. “Tracing Isomanifolds in Rd in Time Polynomial in d Using Coxeter-Freudenthal-Kuhn Triangulations.” 37th International Symposium on Computational Geometry (SoCG 2021), vol. 189, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2021, p. 17:1-17:16, doi:10.4230/LIPIcs.SoCG.2021.17.","ista":"Boissonnat J-D, Kachanovich S, Wintraecken M. 2021. Tracing isomanifolds in Rd in time polynomial in d using Coxeter-Freudenthal-Kuhn triangulations. 37th International Symposium on Computational Geometry (SoCG 2021). SoCG: Symposium on Computational GeometryLeibniz International Proceedings in Informatics (LIPIcs), LIPIcs, vol. 189, 17:1-17:16.","chicago":"Boissonnat, Jean-Daniel, Siargey Kachanovich, and Mathijs Wintraecken. “Tracing Isomanifolds in Rd in Time Polynomial in d Using Coxeter-Freudenthal-Kuhn Triangulations.” In 37th International Symposium on Computational Geometry (SoCG 2021), 189:17:1-17:16. Leibniz International Proceedings in Informatics (LIPIcs). Dagstuhl, Germany: Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2021. https://doi.org/10.4230/LIPIcs.SoCG.2021.17."},"oa":1,"publisher":"Schloss Dagstuhl - Leibniz-Zentrum für Informatik","quality_controlled":"1","acknowledgement":"We thank Dominique Attali, Guilherme de Fonseca, Arijit Ghosh, Vincent Pilaud and Aurélien Alvarez for their comments and suggestions. We also acknowledge the reviewers.","date_created":"2021-06-02T10:10:55Z","doi":"10.4230/LIPIcs.SoCG.2021.17","date_published":"2021-06-02T00:00:00Z","page":"17:1-17:16","publication":"37th International Symposium on Computational Geometry (SoCG 2021)","day":"02","year":"2021","has_accepted_license":"1","status":"public","conference":{"name":"SoCG: Symposium on Computational Geometry","end_date":"2021-06-11","location":"Virtual","start_date":"2021-06-07"},"tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"type":"conference","series_title":"Leibniz International Proceedings in Informatics (LIPIcs)","_id":"9441","file_date_updated":"2021-06-02T10:22:33Z","department":[{"_id":"HeEd"}],"ddc":["005","516","514"],"date_updated":"2023-10-10T07:34:34Z","intvolume":" 189","place":"Dagstuhl, Germany","month":"06","alternative_title":["LIPIcs"],"oa_version":"Published Version","abstract":[{"text":"Isomanifolds are the generalization of isosurfaces to arbitrary dimension and codimension, i.e. submanifolds of ℝ^d defined as the zero set of some multivariate multivalued smooth function f: ℝ^d → ℝ^{d-n}, where n is the intrinsic dimension of the manifold. A natural way to approximate a smooth isomanifold M is to consider its Piecewise-Linear (PL) approximation M̂ based on a triangulation 𝒯 of the ambient space ℝ^d. In this paper, we describe a simple algorithm to trace isomanifolds from a given starting point. The algorithm works for arbitrary dimensions n and d, and any precision D. Our main result is that, when f (or M) has bounded complexity, the complexity of the algorithm is polynomial in d and δ = 1/D (and unavoidably exponential in n). Since it is known that for δ = Ω (d^{2.5}), M̂ is O(D²)-close and isotopic to M, our algorithm produces a faithful PL-approximation of isomanifolds of bounded complexity in time polynomial in d. Combining this algorithm with dimensionality reduction techniques, the dependency on d in the size of M̂ can be completely removed with high probability. We also show that the algorithm can handle isomanifolds with boundary and, more generally, isostratifolds. The algorithm for isomanifolds with boundary has been implemented and experimental results are reported, showing that it is practical and can handle cases that are far ahead of the state-of-the-art. ","lang":"eng"}],"ec_funded":1,"volume":189,"related_material":{"record":[{"status":"public","id":"12960","relation":"later_version"}]},"language":[{"iso":"eng"}],"file":[{"creator":"mwintrae","date_updated":"2021-06-02T10:22:33Z","file_size":1972902,"date_created":"2021-06-02T10:22:33Z","file_name":"LIPIcs-SoCG-2021-17.pdf","access_level":"open_access","relation":"main_file","content_type":"application/pdf","checksum":"c322aa48d5d35a35877896cc565705b6","file_id":"9442","success":1}],"publication_status":"published","publication_identifier":{"issn":["1868-8969"],"isbn":["978-3-95977-184-9"]}},{"citation":{"ama":"Chatterjee K, Ibsen-Jensen R, Pavlogiannis A. Faster algorithms for quantitative verification in bounded treewidth graphs. Formal Methods in System Design. 2021;57:401-428. doi:10.1007/s10703-021-00373-5","apa":"Chatterjee, K., Ibsen-Jensen, R., & Pavlogiannis, A. (2021). Faster algorithms for quantitative verification in bounded treewidth graphs. Formal Methods in System Design. Springer. https://doi.org/10.1007/s10703-021-00373-5","ieee":"K. Chatterjee, R. Ibsen-Jensen, and A. Pavlogiannis, “Faster algorithms for quantitative verification in bounded treewidth graphs,” Formal Methods in System Design, vol. 57. Springer, pp. 401–428, 2021.","short":"K. Chatterjee, R. Ibsen-Jensen, A. Pavlogiannis, Formal Methods in System Design 57 (2021) 401–428.","mla":"Chatterjee, Krishnendu, et al. “Faster Algorithms for Quantitative Verification in Bounded Treewidth Graphs.” Formal Methods in System Design, vol. 57, Springer, 2021, pp. 401–28, doi:10.1007/s10703-021-00373-5.","ista":"Chatterjee K, Ibsen-Jensen R, Pavlogiannis A. 2021. Faster algorithms for quantitative verification in bounded treewidth graphs. Formal Methods in System Design. 57, 401–428.","chicago":"Chatterjee, Krishnendu, Rasmus Ibsen-Jensen, and Andreas Pavlogiannis. “Faster Algorithms for Quantitative Verification in Bounded Treewidth Graphs.” Formal Methods in System Design. Springer, 2021. https://doi.org/10.1007/s10703-021-00373-5."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_processing_charge":"No","external_id":{"isi":["000645490300001"],"arxiv":["1504.07384"]},"author":[{"first_name":"Krishnendu","id":"2E5DCA20-F248-11E8-B48F-1D18A9856A87","full_name":"Chatterjee, Krishnendu","orcid":"0000-0002-4561-241X","last_name":"Chatterjee"},{"last_name":"Ibsen-Jensen","full_name":"Ibsen-Jensen, Rasmus","orcid":"0000-0003-4783-0389","id":"3B699956-F248-11E8-B48F-1D18A9856A87","first_name":"Rasmus"},{"first_name":"Andreas","id":"49704004-F248-11E8-B48F-1D18A9856A87","full_name":"Pavlogiannis, Andreas","orcid":"0000-0002-8943-0722","last_name":"Pavlogiannis"}],"title":"Faster algorithms for quantitative verification in bounded treewidth graphs","project":[{"_id":"2584A770-B435-11E9-9278-68D0E5697425","call_identifier":"FWF","name":"Modern Graph Algorithmic Techniques in Formal Verification","grant_number":"P 23499-N23"},{"grant_number":"S 11407_N23","name":"Rigorous Systems Engineering","_id":"25832EC2-B435-11E9-9278-68D0E5697425","call_identifier":"FWF"},{"call_identifier":"FP7","_id":"2581B60A-B435-11E9-9278-68D0E5697425","name":"Quantitative Graph Games: Theory and Applications","grant_number":"279307"},{"name":"Microsoft Research Faculty Fellowship","_id":"2587B514-B435-11E9-9278-68D0E5697425"}],"year":"2021","isi":1,"publication":"Formal Methods in System Design","day":"01","page":"401-428","date_created":"2021-05-16T22:01:47Z","date_published":"2021-09-01T00:00:00Z","doi":"10.1007/s10703-021-00373-5","acknowledgement":"The research was partly supported by Austrian Science Fund (FWF) Grant No P23499- N23, FWF NFN Grant No S11407-N23 (RiSE/SHiNE), ERC Start Grant (279307: Graph Games), and Microsoft faculty fellows award.","oa":1,"publisher":"Springer","quality_controlled":"1","date_updated":"2023-10-10T11:13:20Z","department":[{"_id":"KrCh"}],"_id":"9393","article_type":"original","type":"journal_article","status":"public","publication_status":"published","publication_identifier":{"eissn":["1572-8102"],"issn":["0925-9856"]},"language":[{"iso":"eng"}],"ec_funded":1,"volume":57,"abstract":[{"text":"We consider the core algorithmic problems related to verification of systems with respect to three classical quantitative properties, namely, the mean-payoff, the ratio, and the minimum initial credit for energy property. The algorithmic problem given a graph and a quantitative property asks to compute the optimal value (the infimum value over all traces) from every node of the graph. We consider graphs with bounded treewidth—a class that contains the control flow graphs of most programs. Let n denote the number of nodes of a graph, m the number of edges (for bounded treewidth 𝑚=𝑂(𝑛)) and W the largest absolute value of the weights. Our main theoretical results are as follows. First, for the minimum initial credit problem we show that (1) for general graphs the problem can be solved in 𝑂(𝑛2⋅𝑚) time and the associated decision problem in 𝑂(𝑛⋅𝑚) time, improving the previous known 𝑂(𝑛3⋅𝑚⋅log(𝑛⋅𝑊)) and 𝑂(𝑛2⋅𝑚) bounds, respectively; and (2) for bounded treewidth graphs we present an algorithm that requires 𝑂(𝑛⋅log𝑛) time. Second, for bounded treewidth graphs we present an algorithm that approximates the mean-payoff value within a factor of 1+𝜖 in time 𝑂(𝑛⋅log(𝑛/𝜖)) as compared to the classical exact algorithms on general graphs that require quadratic time. Third, for the ratio property we present an algorithm that for bounded treewidth graphs works in time 𝑂(𝑛⋅log(|𝑎⋅𝑏|))=𝑂(𝑛⋅log(𝑛⋅𝑊)), when the output is 𝑎𝑏, as compared to the previously best known algorithm on general graphs with running time 𝑂(𝑛2⋅log(𝑛⋅𝑊)). We have implemented some of our algorithms and show that they present a significant speedup on standard benchmarks.","lang":"eng"}],"oa_version":"Preprint","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1504.07384"}],"scopus_import":"1","intvolume":" 57","month":"09"}]