[{"type":"journal_article","issue":"11","abstract":[{"lang":"eng","text":"In this paper, we explore the stability and dynamical relevance of a wide variety of steady, time-periodic, quasiperiodic, and chaotic flows arising between orthogonally stretching parallel plates. We first explore the stability of all the steady flow solution families formerly identified by Ayats et al. [“Flows between orthogonally stretching parallel plates,” Phys. Fluids 33, 024103 (2021)], concluding that only the one that originates from the Stokesian approximation is actually stable. When both plates are shrinking at identical or nearly the same deceleration rates, this Stokesian flow exhibits a Hopf bifurcation that leads to stable time-periodic regimes. The resulting time-periodic orbits or flows are tracked for different Reynolds numbers and stretching rates while monitoring their Floquet exponents to identify secondary instabilities. It is found that these time-periodic flows also exhibit Neimark–Sacker bifurcations, generating stable quasiperiodic flows (tori) that may sometimes give rise to chaotic dynamics through a Ruelle–Takens–Newhouse scenario. However, chaotic dynamics is unusually observed, as the quasiperiodic flows generally become phase-locked through a resonance mechanism before a strange attractor may arise, thus restoring the time-periodicity of the flow. In this work, we have identified and tracked four different resonance regions, also known as Arnold tongues or horns. In particular, the 1 : 4 strong resonance region is explored in great detail, where the identified scenarios are in very good agreement with normal form theory. "}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"12146","intvolume":" 34","status":"public","title":"Phase-locking flows between orthogonally stretching parallel plates","oa_version":"Submitted Version","scopus_import":"1","keyword":["Condensed Matter Physics","Fluid Flow and Transfer Processes","Mechanics of Materials","Computational Mechanics","Mechanical Engineering"],"article_processing_charge":"No","day":"04","citation":{"mla":"Wang, B., et al. “Phase-Locking Flows between Orthogonally Stretching Parallel Plates.” Physics of Fluids, vol. 34, no. 11, 114111, AIP Publishing, 2022, doi:10.1063/5.0124152.","short":"B. Wang, R. Ayats López, A. Meseguer, F. Marques, Physics of Fluids 34 (2022).","chicago":"Wang, B., Roger Ayats López, A. Meseguer, and F. Marques. “Phase-Locking Flows between Orthogonally Stretching Parallel Plates.” Physics of Fluids. AIP Publishing, 2022. https://doi.org/10.1063/5.0124152.","ama":"Wang B, Ayats López R, Meseguer A, Marques F. Phase-locking flows between orthogonally stretching parallel plates. Physics of Fluids. 2022;34(11). doi:10.1063/5.0124152","ista":"Wang B, Ayats López R, Meseguer A, Marques F. 2022. Phase-locking flows between orthogonally stretching parallel plates. Physics of Fluids. 34(11), 114111.","apa":"Wang, B., Ayats López, R., Meseguer, A., & Marques, F. (2022). Phase-locking flows between orthogonally stretching parallel plates. Physics of Fluids. AIP Publishing. https://doi.org/10.1063/5.0124152","ieee":"B. Wang, R. Ayats López, A. Meseguer, and F. Marques, “Phase-locking flows between orthogonally stretching parallel plates,” Physics of Fluids, vol. 34, no. 11. AIP Publishing, 2022."},"publication":"Physics of Fluids","article_type":"original","date_published":"2022-11-04T00:00:00Z","article_number":"114111","acknowledgement":"This work was supported by the Spanish MINECO under Grant Nos. FIS2017-85794-P and PRX18/00179, the Spanish MICINN through Grant No. PID2020-114043GB-I00, and the\r\nGeneralitat de Catalunya under Grant No. 2017-SGR-785. B.W.’s research was also supported by the Chinese Scholarship Council through Grant CSC No. 201806440152.","year":"2022","publisher":"AIP Publishing","department":[{"_id":"BjHo"}],"publication_status":"published","author":[{"last_name":"Wang","first_name":"B.","full_name":"Wang, B."},{"orcid":"0000-0001-6572-0621","id":"ab77522d-073b-11ed-8aff-e71b39258362","last_name":"Ayats López","first_name":"Roger","full_name":"Ayats López, Roger"},{"first_name":"A.","last_name":"Meseguer","full_name":"Meseguer, A."},{"last_name":"Marques","first_name":"F.","full_name":"Marques, F."}],"volume":34,"date_created":"2023-01-12T12:06:58Z","date_updated":"2023-10-03T11:07:58Z","publication_identifier":{"issn":["1070-6631"],"eissn":["1089-7666"]},"month":"11","main_file_link":[{"url":"https://upcommons.upc.edu/handle/2117/385635","open_access":"1"}],"oa":1,"external_id":{"isi":["000880665300024"]},"isi":1,"quality_controlled":"1","doi":"10.1063/5.0124152","language":[{"iso":"eng"}]},{"month":"07","publication_identifier":{"eissn":["2753-149X"]},"quality_controlled":"1","project":[{"grant_number":"618444","_id":"25D61E48-B435-11E9-9278-68D0E5697425","call_identifier":"FP7","name":"Molecular Mechanisms of Cerebral Cortex Development"},{"_id":"2625A13E-B435-11E9-9278-68D0E5697425","grant_number":"24812","name":"Molecular Mechanisms of Radial Neuronal Migration"}],"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"oa":1,"acknowledged_ssus":[{"_id":"LifeSc"},{"_id":"PreCl"},{"_id":"Bio"}],"language":[{"iso":"eng"}],"doi":"10.1093/oons/kvac009","article_number":"kvac009","file_date_updated":"2023-08-16T08:00:30Z","ec_funded":1,"publication_status":"published","department":[{"_id":"SiHi"},{"_id":"BjHo"},{"_id":"LifeSc"},{"_id":"EM-Fac"}],"publisher":"Oxford Academic","year":"2022","acknowledgement":"A.H.H. was a recipient of a DOC Fellowship (24812) of the Austrian Academy of Sciences. This work also received support from IST Austria institutional funds; the People Programme (Marie Curie Actions) of the European Union’s Seventh Framework Programme (FP7/2007–2013) under REA grant agreement No 618444 to S.H.\r\nAPC funding was obtained by IST Austria institutional funds.\r\nWe thank A. Sommer and C. Czepe (VBCF GmbH, NGS Unit), L. Andersen, J. Sonntag and J. Renno for technical support and/or initial experiments; M. Sixt, J. Nimpf and all members of the Hippenmeyer lab for discussion. This research was supported by the Scientific Service Units of IST Austria through resources provided by the Imaging and Optics Facility, Lab Support Facility and Preclinical Facility.","date_updated":"2023-11-30T10:55:12Z","date_created":"2022-02-25T07:52:11Z","volume":1,"author":[{"full_name":"Hansen, Andi H","last_name":"Hansen","first_name":"Andi H","id":"38853E16-F248-11E8-B48F-1D18A9856A87"},{"id":"48EA0138-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-7462-0048","first_name":"Florian","last_name":"Pauler","full_name":"Pauler, Florian"},{"orcid":"0000-0003-4844-6311","id":"3BE60946-F248-11E8-B48F-1D18A9856A87","last_name":"Riedl","first_name":"Michael","full_name":"Riedl, Michael"},{"last_name":"Streicher","first_name":"Carmen","id":"36BCB99C-F248-11E8-B48F-1D18A9856A87","full_name":"Streicher, Carmen"},{"full_name":"Heger, Anna-Magdalena","id":"4B76FFD2-F248-11E8-B48F-1D18A9856A87","first_name":"Anna-Magdalena","last_name":"Heger"},{"orcid":"0000-0002-7903-3010","id":"2D6B7A9A-F248-11E8-B48F-1D18A9856A87","last_name":"Laukoter","first_name":"Susanne","full_name":"Laukoter, Susanne"},{"full_name":"Sommer, Christoph M","last_name":"Sommer","first_name":"Christoph M","orcid":"0000-0003-1216-9105","id":"4DF26D8C-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Nicolas","first_name":"Armel","id":"2A103192-F248-11E8-B48F-1D18A9856A87","full_name":"Nicolas, Armel"},{"full_name":"Hof, Björn","orcid":"0000-0003-2057-2754","id":"3A374330-F248-11E8-B48F-1D18A9856A87","last_name":"Hof","first_name":"Björn"},{"first_name":"Li Huei","last_name":"Tsai","full_name":"Tsai, Li Huei"},{"first_name":"Thomas","last_name":"Rülicke","full_name":"Rülicke, Thomas"},{"full_name":"Hippenmeyer, Simon","last_name":"Hippenmeyer","first_name":"Simon","orcid":"0000-0003-2279-1061","id":"37B36620-F248-11E8-B48F-1D18A9856A87"}],"related_material":{"record":[{"relation":"dissertation_contains","status":"public","id":"12726"},{"status":"public","relation":"dissertation_contains","id":"14530"}]},"day":"07","has_accepted_license":"1","article_processing_charge":"No","article_type":"original","publication":"Oxford Open Neuroscience","citation":{"ama":"Hansen AH, Pauler F, Riedl M, et al. Tissue-wide effects override cell-intrinsic gene function in radial neuron migration. Oxford Open Neuroscience. 2022;1(1). doi:10.1093/oons/kvac009","ista":"Hansen AH, Pauler F, Riedl M, Streicher C, Heger A-M, Laukoter S, Sommer CM, Nicolas A, Hof B, Tsai LH, Rülicke T, Hippenmeyer S. 2022. Tissue-wide effects override cell-intrinsic gene function in radial neuron migration. Oxford Open Neuroscience. 1(1), kvac009.","ieee":"A. H. Hansen et al., “Tissue-wide effects override cell-intrinsic gene function in radial neuron migration,” Oxford Open Neuroscience, vol. 1, no. 1. Oxford Academic, 2022.","apa":"Hansen, A. H., Pauler, F., Riedl, M., Streicher, C., Heger, A.-M., Laukoter, S., … Hippenmeyer, S. (2022). Tissue-wide effects override cell-intrinsic gene function in radial neuron migration. Oxford Open Neuroscience. Oxford Academic. https://doi.org/10.1093/oons/kvac009","mla":"Hansen, Andi H., et al. “Tissue-Wide Effects Override Cell-Intrinsic Gene Function in Radial Neuron Migration.” Oxford Open Neuroscience, vol. 1, no. 1, kvac009, Oxford Academic, 2022, doi:10.1093/oons/kvac009.","short":"A.H. Hansen, F. Pauler, M. Riedl, C. Streicher, A.-M. Heger, S. Laukoter, C.M. Sommer, A. Nicolas, B. Hof, L.H. Tsai, T. Rülicke, S. Hippenmeyer, Oxford Open Neuroscience 1 (2022).","chicago":"Hansen, Andi H, Florian Pauler, Michael Riedl, Carmen Streicher, Anna-Magdalena Heger, Susanne Laukoter, Christoph M Sommer, et al. “Tissue-Wide Effects Override Cell-Intrinsic Gene Function in Radial Neuron Migration.” Oxford Open Neuroscience. Oxford Academic, 2022. https://doi.org/10.1093/oons/kvac009."},"date_published":"2022-07-07T00:00:00Z","type":"journal_article","abstract":[{"text":"The mammalian neocortex is composed of diverse neuronal and glial cell classes that broadly arrange in six distinct laminae. Cortical layers emerge during development and defects in the developmental programs that orchestrate cortical lamination are associated with neurodevelopmental diseases. The developmental principle of cortical layer formation depends on concerted radial projection neuron migration, from their birthplace to their final target position. Radial migration occurs in defined sequential steps, regulated by a large array of signaling pathways. However, based on genetic loss-of-function experiments, most studies have thus far focused on the role of cell-autonomous gene function. Yet, cortical neuron migration in situ is a complex process and migrating neurons traverse along diverse cellular compartments and environments. The role of tissue-wide properties and genetic state in radial neuron migration is however not clear. Here we utilized mosaic analysis with double markers (MADM) technology to either sparsely or globally delete gene function, followed by quantitative single-cell phenotyping. The MADM-based gene ablation paradigms in combination with computational modeling demonstrated that global tissue-wide effects predominate cell-autonomous gene function albeit in a gene-specific manner. Our results thus suggest that the genetic landscape in a tissue critically affects the overall migration phenotype of individual cortical projection neurons. In a broader context, our findings imply that global tissue-wide effects represent an essential component of the underlying etiology associated with focal malformations of cortical development in particular, and neurological diseases in general.","lang":"eng"}],"issue":"1","title":"Tissue-wide effects override cell-intrinsic gene function in radial neuron migration","status":"public","ddc":["570"],"intvolume":" 1","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"10791","oa_version":"Published Version","file":[{"creator":"dernst","file_size":4846551,"content_type":"application/pdf","file_name":"2023_OxfordOpenNeuroscience_Hansen.pdf","access_level":"open_access","date_updated":"2023-08-16T08:00:30Z","date_created":"2023-08-16T08:00:30Z","success":1,"checksum":"822e76e056c07099d1fb27d1ece5941b","file_id":"14061","relation":"main_file"}]},{"article_processing_charge":"No","day":"10","scopus_import":"1","date_published":"2022-01-10T00:00:00Z","page":"47-62.e9","article_type":"original","citation":{"chicago":"Gaertner, Florian, Patricia Reis-Rodrigues, Ingrid de Vries, Miroslav Hons, Juan Aguilera, Michael Riedl, Alexander F Leithner, et al. “WASp Triggers Mechanosensitive Actin Patches to Facilitate Immune Cell Migration in Dense Tissues.” Developmental Cell. Cell Press ; Elsevier, 2022. https://doi.org/10.1016/j.devcel.2021.11.024.","short":"F. Gaertner, P. Reis-Rodrigues, I. de Vries, M. Hons, J. Aguilera, M. Riedl, A.F. Leithner, S. Tasciyan, A. Kopf, J. Merrin, V. Zheden, W. Kaufmann, R. Hauschild, M.K. Sixt, Developmental Cell 57 (2022) 47–62.e9.","mla":"Gaertner, Florian, et al. “WASp Triggers Mechanosensitive Actin Patches to Facilitate Immune Cell Migration in Dense Tissues.” Developmental Cell, vol. 57, no. 1, Cell Press ; Elsevier, 2022, p. 47–62.e9, doi:10.1016/j.devcel.2021.11.024.","ieee":"F. Gaertner et al., “WASp triggers mechanosensitive actin patches to facilitate immune cell migration in dense tissues,” Developmental Cell, vol. 57, no. 1. Cell Press ; Elsevier, p. 47–62.e9, 2022.","apa":"Gaertner, F., Reis-Rodrigues, P., de Vries, I., Hons, M., Aguilera, J., Riedl, M., … Sixt, M. K. (2022). WASp triggers mechanosensitive actin patches to facilitate immune cell migration in dense tissues. Developmental Cell. Cell Press ; Elsevier. https://doi.org/10.1016/j.devcel.2021.11.024","ista":"Gaertner F, Reis-Rodrigues P, de Vries I, Hons M, Aguilera J, Riedl M, Leithner AF, Tasciyan S, Kopf A, Merrin J, Zheden V, Kaufmann W, Hauschild R, Sixt MK. 2022. WASp triggers mechanosensitive actin patches to facilitate immune cell migration in dense tissues. Developmental Cell. 57(1), 47–62.e9.","ama":"Gaertner F, Reis-Rodrigues P, de Vries I, et al. WASp triggers mechanosensitive actin patches to facilitate immune cell migration in dense tissues. Developmental Cell. 2022;57(1):47-62.e9. doi:10.1016/j.devcel.2021.11.024"},"publication":"Developmental Cell","issue":"1","abstract":[{"text":"When crawling through the body, leukocytes often traverse tissues that are densely packed with extracellular matrix and other cells, and this raises the question: How do leukocytes overcome compressive mechanical loads? Here, we show that the actin cortex of leukocytes is mechanoresponsive and that this responsiveness requires neither force sensing via the nucleus nor adhesive interactions with a substrate. Upon global compression of the cell body as well as local indentation of the plasma membrane, Wiskott-Aldrich syndrome protein (WASp) assembles into dot-like structures, providing activation platforms for Arp2/3 nucleated actin patches. These patches locally push against the external load, which can be obstructing collagen fibers or other cells, and thereby create space to facilitate forward locomotion. We show in vitro and in vivo that this WASp function is rate limiting for ameboid leukocyte migration in dense but not in loose environments and is required for trafficking through diverse tissues such as skin and lymph nodes.","lang":"eng"}],"type":"journal_article","oa_version":"Published Version","intvolume":" 57","status":"public","title":"WASp triggers mechanosensitive actin patches to facilitate immune cell migration in dense tissues","ddc":["570"],"_id":"10703","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","publication_identifier":{"eissn":["1878-1551"],"issn":["1534-5807"]},"month":"01","language":[{"iso":"eng"}],"acknowledged_ssus":[{"_id":"LifeSc"},{"_id":"Bio"},{"_id":"EM-Fac"}],"doi":"10.1016/j.devcel.2021.11.024","project":[{"name":"Mechanical Adaptation of Lamellipodial Actin Networks in Migrating Cells","call_identifier":"H2020","grant_number":"747687","_id":"260AA4E2-B435-11E9-9278-68D0E5697425"},{"grant_number":"724373","_id":"25FE9508-B435-11E9-9278-68D0E5697425","name":"Cellular navigation along spatial gradients","call_identifier":"H2020"}],"isi":1,"quality_controlled":"1","external_id":{"isi":["000768933800005"],"pmid":["34919802"]},"tmp":{"name":"Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)","legal_code_url":"https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode","short":"CC BY-NC-ND (4.0)","image":"/images/cc_by_nc_nd.png"},"main_file_link":[{"url":"https://www.sciencedirect.com/science/article/pii/S1534580721009497","open_access":"1"}],"oa":1,"ec_funded":1,"volume":57,"date_updated":"2024-03-28T23:30:23Z","date_created":"2022-01-30T23:01:33Z","related_material":{"record":[{"id":"12726","status":"public","relation":"dissertation_contains"},{"id":"14530","relation":"dissertation_contains","status":"public"},{"id":"12401","status":"public","relation":"dissertation_contains"}]},"author":[{"first_name":"Florian","last_name":"Gaertner","full_name":"Gaertner, Florian"},{"first_name":"Patricia","last_name":"Reis-Rodrigues","full_name":"Reis-Rodrigues, Patricia"},{"full_name":"De Vries, Ingrid","last_name":"De Vries","first_name":"Ingrid","id":"4C7D837E-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Hons, Miroslav","first_name":"Miroslav","last_name":"Hons","id":"4167FE56-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-6625-3348"},{"full_name":"Aguilera, Juan","last_name":"Aguilera","first_name":"Juan"},{"id":"3BE60946-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0003-4844-6311","first_name":"Michael","last_name":"Riedl","full_name":"Riedl, Michael"},{"id":"3B1B77E4-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-1073-744X","first_name":"Alexander F","last_name":"Leithner","full_name":"Leithner, Alexander F"},{"orcid":"0000-0003-1671-393X","id":"4323B49C-F248-11E8-B48F-1D18A9856A87","last_name":"Tasciyan","first_name":"Saren","full_name":"Tasciyan, Saren"},{"orcid":"0000-0002-2187-6656","id":"31DAC7B6-F248-11E8-B48F-1D18A9856A87","last_name":"Kopf","first_name":"Aglaja","full_name":"Kopf, Aglaja"},{"full_name":"Merrin, Jack","orcid":"0000-0001-5145-4609","id":"4515C308-F248-11E8-B48F-1D18A9856A87","last_name":"Merrin","first_name":"Jack"},{"full_name":"Zheden, Vanessa","orcid":"0000-0002-9438-4783","id":"39C5A68A-F248-11E8-B48F-1D18A9856A87","last_name":"Zheden","first_name":"Vanessa"},{"last_name":"Kaufmann","first_name":"Walter","orcid":"0000-0001-9735-5315","id":"3F99E422-F248-11E8-B48F-1D18A9856A87","full_name":"Kaufmann, Walter"},{"full_name":"Hauschild, Robert","first_name":"Robert","last_name":"Hauschild","id":"4E01D6B4-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-9843-3522"},{"id":"41E9FBEA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-6620-9179","first_name":"Michael K","last_name":"Sixt","full_name":"Sixt, Michael K"}],"department":[{"_id":"MiSi"},{"_id":"EM-Fac"},{"_id":"NanoFab"},{"_id":"BjHo"}],"publisher":"Cell Press ; Elsevier","publication_status":"published","pmid":1,"acknowledgement":"We thank N. Darwish-Miranda, F. Leite, F.P. Assen, and A. Eichner for advice and help with experiments. We thank J. Renkawitz, E. Kiermaier, A. Juanes Garcia, and M. Avellaneda for critical reading of the manuscript. We thank M. Driscoll for advice on fluorescent labeling of collagen gels. This research was supported by the Scientific Service Units (SSUs) of IST Austria through resources provided by Molecular Biology Services/Lab Support Facility (LSF)/Bioimaging Facility/Electron Microscopy Facility. This work was funded by grants from the European Research Council ( CoG 724373 ) and the Austrian Science Foundation (FWF) to M.S. F.G. received funding from the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie grant agreement no. 747687.","year":"2022"},{"article_number":"58","file_date_updated":"2021-01-11T07:50:32Z","acknowledgement":"This research was funded by the Central Research Development Fund of the University of\r\nBremen grant number ZF04B /2019/FB04 Avila_Kerstin (“Independent Project for Postdocs”). Shreyas Jalikop is acknowledged for recording some of the lifetime measurements\r\n","year":"2021","pmid":1,"publication_status":"published","publisher":"MDPI","department":[{"_id":"BjHo"}],"author":[{"full_name":"Avila, Kerstin","id":"fcf74381-53e1-11eb-a6dc-b0e2acf78757","last_name":"Avila","first_name":"Kerstin"},{"full_name":"Hof, Björn","orcid":"0000-0003-2057-2754","id":"3A374330-F248-11E8-B48F-1D18A9856A87","last_name":"Hof","first_name":"Björn"}],"date_updated":"2023-08-07T13:31:07Z","date_created":"2021-01-10T23:01:17Z","volume":23,"month":"01","publication_identifier":{"eissn":["1099-4300"]},"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"external_id":{"pmid":["33396499"],"isi":["000610135400001"]},"oa":1,"quality_controlled":"1","isi":1,"doi":"10.3390/e23010058","language":[{"iso":"eng"}],"type":"journal_article","abstract":[{"lang":"eng","text":"In many basic shear flows, such as pipe, Couette, and channel flow, turbulence does not\r\narise from an instability of the laminar state, and both dynamical states co-exist. With decreasing flow speed (i.e., decreasing Reynolds number) the fraction of fluid in laminar motion increases while turbulence recedes and eventually the entire flow relaminarizes. The first step towards understanding the nature of this transition is to determine if the phase change is of either first or second order. In the former case, the turbulent fraction would drop discontinuously to zero as the Reynolds number decreases while in the latter the process would be continuous. For Couette flow, the flow between two parallel plates, earlier studies suggest a discontinuous scenario. In the present study we realize a Couette flow between two concentric cylinders which allows studies to be carried out in large aspect ratios and for extensive observation times. The presented measurements show that the transition in this circular Couette geometry is continuous suggesting that former studies were limited by finite size effects. A further characterization of this transition, in particular its relation to the directed percolation universality class, requires even larger system sizes than presently available. "}],"issue":"1","_id":"8999","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","ddc":["530"],"status":"public","title":"Second-order phase transition in counter-rotating taylor-couette flow experiment","intvolume":" 23","file":[{"file_size":9456389,"content_type":"application/pdf","creator":"dernst","access_level":"open_access","file_name":"2021_Entropy_Avila.pdf","checksum":"3ba3dd8b7eecff713b72c5e9ba30d626","success":1,"date_updated":"2021-01-11T07:50:32Z","date_created":"2021-01-11T07:50:32Z","relation":"main_file","file_id":"9003"}],"oa_version":"Published Version","scopus_import":"1","day":"01","has_accepted_license":"1","article_processing_charge":"No","publication":"Entropy","citation":{"ama":"Avila K, Hof B. Second-order phase transition in counter-rotating taylor-couette flow experiment. Entropy. 2021;23(1). doi:10.3390/e23010058","apa":"Avila, K., & Hof, B. (2021). Second-order phase transition in counter-rotating taylor-couette flow experiment. Entropy. MDPI. https://doi.org/10.3390/e23010058","ieee":"K. Avila and B. Hof, “Second-order phase transition in counter-rotating taylor-couette flow experiment,” Entropy, vol. 23, no. 1. MDPI, 2021.","ista":"Avila K, Hof B. 2021. Second-order phase transition in counter-rotating taylor-couette flow experiment. Entropy. 23(1), 58.","short":"K. Avila, B. Hof, Entropy 23 (2021).","mla":"Avila, Kerstin, and Björn Hof. “Second-Order Phase Transition in Counter-Rotating Taylor-Couette Flow Experiment.” Entropy, vol. 23, no. 1, 58, MDPI, 2021, doi:10.3390/e23010058.","chicago":"Avila, Kerstin, and Björn Hof. “Second-Order Phase Transition in Counter-Rotating Taylor-Couette Flow Experiment.” Entropy. MDPI, 2021. https://doi.org/10.3390/e23010058."},"article_type":"original","date_published":"2021-01-01T00:00:00Z"},{"month":"02","publication_identifier":{"issn":["0022-1120"],"eissn":["1469-7645"]},"doi":"10.1017/jfm.2020.1089","language":[{"iso":"eng"}],"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"external_id":{"isi":["000618034400001"]},"oa":1,"isi":1,"quality_controlled":"1","project":[{"_id":"260C2330-B435-11E9-9278-68D0E5697425","grant_number":"754411","call_identifier":"H2020","name":"ISTplus - Postdoctoral Fellowships"}],"file_date_updated":"2021-03-03T09:49:34Z","ec_funded":1,"article_number":"A24","author":[{"full_name":"Klotz, Lukasz","orcid":"0000-0003-1740-7635","id":"2C9AF1C2-F248-11E8-B48F-1D18A9856A87","last_name":"Klotz","first_name":"Lukasz"},{"full_name":"Pavlenko, A. M.","first_name":"A. M.","last_name":"Pavlenko"},{"full_name":"Wesfreid, J. E.","first_name":"J. E.","last_name":"Wesfreid"}],"date_updated":"2023-08-07T13:55:40Z","date_created":"2021-02-28T23:01:25Z","volume":912,"year":"2021","acknowledgement":"We thank Y. Duguet, S. Gomé, G. Lemoult, T. Liu, B. Semin and L.S. Tuckerman for\r\nfruitful discussions. \r\nThis work was supported by a grant, TRANSFLOW, provided by the Agence Nationale de\r\nla Recherche (ANR). A.M.P. was partially supported by the French Embassy in Russia (I.I. Mechnikov scholarship) and by the Russian Science Foundation (project no. 18-79-00189). L.K. was partially supported by the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement no. 754411.","publication_status":"published","department":[{"_id":"BjHo"}],"publisher":"Cambridge University Press","day":"15","article_processing_charge":"Yes (via OA deal)","has_accepted_license":"1","scopus_import":"1","date_published":"2021-02-15T00:00:00Z","publication":"Journal of Fluid Mechanics","citation":{"chicago":"Klotz, Lukasz, A. M. Pavlenko, and J. E. Wesfreid. “Experimental Measurements in Plane Couette-Poiseuille Flow: Dynamics of the Large- and Small-Scale Flow.” Journal of Fluid Mechanics. Cambridge University Press, 2021. https://doi.org/10.1017/jfm.2020.1089.","mla":"Klotz, Lukasz, et al. “Experimental Measurements in Plane Couette-Poiseuille Flow: Dynamics of the Large- and Small-Scale Flow.” Journal of Fluid Mechanics, vol. 912, A24, Cambridge University Press, 2021, doi:10.1017/jfm.2020.1089.","short":"L. Klotz, A.M. Pavlenko, J.E. Wesfreid, Journal of Fluid Mechanics 912 (2021).","ista":"Klotz L, Pavlenko AM, Wesfreid JE. 2021. Experimental measurements in plane Couette-Poiseuille flow: Dynamics of the large- and small-scale flow. Journal of Fluid Mechanics. 912, A24.","apa":"Klotz, L., Pavlenko, A. M., & Wesfreid, J. E. (2021). Experimental measurements in plane Couette-Poiseuille flow: Dynamics of the large- and small-scale flow. Journal of Fluid Mechanics. Cambridge University Press. https://doi.org/10.1017/jfm.2020.1089","ieee":"L. Klotz, A. M. Pavlenko, and J. E. Wesfreid, “Experimental measurements in plane Couette-Poiseuille flow: Dynamics of the large- and small-scale flow,” Journal of Fluid Mechanics, vol. 912. Cambridge University Press, 2021.","ama":"Klotz L, Pavlenko AM, Wesfreid JE. Experimental measurements in plane Couette-Poiseuille flow: Dynamics of the large- and small-scale flow. Journal of Fluid Mechanics. 2021;912. doi:10.1017/jfm.2020.1089"},"article_type":"original","abstract":[{"text":"In this paper we experimentally study the transitional range of Reynolds numbers in\r\nplane Couette–Poiseuille flow, focusing our attention on the localized turbulent structures\r\ntriggered by a strong impulsive jet and the large-scale flow generated around these\r\nstructures. We present a detailed investigation of the large-scale flow and show how\r\nits amplitude depends on Reynolds number and amplitude perturbation. In addition,\r\nwe characterize the initial dynamics of the localized turbulent spot, which includes the\r\ncoupling between the small and large scales, as well as the dependence of the advection\r\nspeed on the large-scale flow generated around the spot. Finally, we provide the first\r\nexperimental measurements of the large-scale flow around an oblique turbulent band.","lang":"eng"}],"type":"journal_article","oa_version":"Published Version","file":[{"checksum":"b8020d6338667673e34fde0608913dd2","success":1,"date_updated":"2021-03-03T09:49:34Z","date_created":"2021-03-03T09:49:34Z","relation":"main_file","file_id":"9220","file_size":4124471,"content_type":"application/pdf","creator":"dernst","access_level":"open_access","file_name":"2021_JourFluidMechanics_Klotz.pdf"}],"_id":"9207","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","title":"Experimental measurements in plane Couette-Poiseuille flow: Dynamics of the large- and small-scale flow","status":"public","ddc":["530"],"intvolume":" 912"},{"author":[{"full_name":"Liu, T.","last_name":"Liu","first_name":"T."},{"first_name":"B.","last_name":"Semin","full_name":"Semin, B."},{"full_name":"Klotz, Lukasz","first_name":"Lukasz","last_name":"Klotz","id":"2C9AF1C2-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0003-1740-7635"},{"first_name":"R.","last_name":"Godoy-Diana","full_name":"Godoy-Diana, R."},{"full_name":"Wesfreid, J. E.","first_name":"J. E.","last_name":"Wesfreid"},{"last_name":"Mullin","first_name":"T.","full_name":"Mullin, T."}],"volume":915,"date_created":"2021-03-28T22:01:42Z","date_updated":"2023-08-07T14:30:11Z","year":"2021","acknowledgement":"We gratefully acknowledge Joran Rolland, Yohann Duguet, Romain Monchaux, S´ebastien Gom´e, Laurette Tuckerman, Dwight Barkley, Olivier Dauchot and Sabine Bottin for fruitful discussions. We thank Xavier Benoit-Gonin, Amaury Fourgeaud, Thierry Darnige, Olivier Brouard and Justine Laurent for technical help. This work has benefited from the ANR TransFlow, and by starting grants obtained by B.S. from CNRS (INSIS) and ESPCI. T.M. was\r\nsupported by a Joliot visiting professorship grant from ESPCI.","publisher":"Cambridge University Press","department":[{"_id":"BjHo"}],"publication_status":"published","article_number":"A65","doi":"10.1017/jfm.2021.89","language":[{"iso":"eng"}],"oa":1,"external_id":{"isi":["000629677500001"],"arxiv":["2008.08851"]},"main_file_link":[{"url":"https://arxiv.org/abs/2008.08851","open_access":"1"}],"quality_controlled":"1","isi":1,"publication_identifier":{"eissn":["1469-7645"],"issn":["0022-1120"]},"month":"03","oa_version":"Preprint","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"9297","intvolume":" 915","status":"public","title":"Decay of streaks and rolls in plane Couette-Poiseuille flow","abstract":[{"text":"We report the results of an experimental investigation into the decay of turbulence in plane Couette–Poiseuille flow using ‘quench’ experiments where the flow laminarises after a sudden reduction in Reynolds number Re. Specifically, we study the velocity field in the streamwise–spanwise plane. We show that the spanwise velocity containing rolls decays faster than the streamwise velocity, which displays elongated regions of higher or lower velocity called streaks. At final Reynolds numbers above 425, the decay of streaks displays two stages: first a slow decay when rolls are present and secondly a more rapid decay of streaks alone. The difference in behaviour results from the regeneration of streaks by rolls, called the lift-up effect. We define the turbulent fraction as the portion of the flow containing turbulence and this is estimated by thresholding the spanwise velocity component. It decreases linearly with time in the whole range of final Re. The corresponding decay slope increases linearly with final Re. The extrapolated value at which this decay slope vanishes is Reaz≈656±10, close to Reg≈670 at which turbulence is self-sustained. The decay of the energy computed from the spanwise velocity component is found to be exponential. The corresponding decay rate increases linearly with Re, with an extrapolated vanishing value at ReAz≈688±10. This value is also close to the value at which the turbulence is self-sustained, showing that valuable information on the transition can be obtained over a wide range of Re.","lang":"eng"}],"type":"journal_article","date_published":"2021-03-17T00:00:00Z","citation":{"chicago":"Liu, T., B. Semin, Lukasz Klotz, R. Godoy-Diana, J. E. Wesfreid, and T. Mullin. “Decay of Streaks and Rolls in Plane Couette-Poiseuille Flow.” Journal of Fluid Mechanics. Cambridge University Press, 2021. https://doi.org/10.1017/jfm.2021.89.","short":"T. Liu, B. Semin, L. Klotz, R. Godoy-Diana, J.E. Wesfreid, T. Mullin, Journal of Fluid Mechanics 915 (2021).","mla":"Liu, T., et al. “Decay of Streaks and Rolls in Plane Couette-Poiseuille Flow.” Journal of Fluid Mechanics, vol. 915, A65, Cambridge University Press, 2021, doi:10.1017/jfm.2021.89.","apa":"Liu, T., Semin, B., Klotz, L., Godoy-Diana, R., Wesfreid, J. E., & Mullin, T. (2021). Decay of streaks and rolls in plane Couette-Poiseuille flow. Journal of Fluid Mechanics. Cambridge University Press. https://doi.org/10.1017/jfm.2021.89","ieee":"T. Liu, B. Semin, L. Klotz, R. Godoy-Diana, J. E. Wesfreid, and T. Mullin, “Decay of streaks and rolls in plane Couette-Poiseuille flow,” Journal of Fluid Mechanics, vol. 915. Cambridge University Press, 2021.","ista":"Liu T, Semin B, Klotz L, Godoy-Diana R, Wesfreid JE, Mullin T. 2021. Decay of streaks and rolls in plane Couette-Poiseuille flow. Journal of Fluid Mechanics. 915, A65.","ama":"Liu T, Semin B, Klotz L, Godoy-Diana R, Wesfreid JE, Mullin T. Decay of streaks and rolls in plane Couette-Poiseuille flow. Journal of Fluid Mechanics. 2021;915. doi:10.1017/jfm.2021.89"},"publication":"Journal of Fluid Mechanics","article_type":"original","article_processing_charge":"No","day":"17","scopus_import":"1"},{"month":"05","publication_identifier":{"eissn":["20411723"]},"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"oa":1,"external_id":{"isi":["000687305500044"]},"isi":1,"quality_controlled":"1","doi":"10.1038/s41467-021-22725-9","language":[{"iso":"eng"}],"article_number":"2586","file_date_updated":"2021-05-25T14:18:40Z","year":"2021","acknowledgement":"The authors thank Malte Schröder for valuable discussions and creating the scale-free network topologies. B.H. thanks Mukund Vasudevan for helpful discussion. The research by M.T. was supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany´s Excellence Strategy–EXC-2068–390729961–Cluster of Excellence Physics of Life of TU Dresden.","publication_status":"published","department":[{"_id":"BjHo"}],"publisher":"Springer Nature","author":[{"full_name":"Scarselli, Davide","first_name":"Davide","last_name":"Scarselli","id":"40315C30-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-5227-4271"},{"last_name":"Budanur","first_name":"Nazmi B","orcid":"0000-0003-0423-5010","id":"3EA1010E-F248-11E8-B48F-1D18A9856A87","full_name":"Budanur, Nazmi B"},{"full_name":"Timme, Marc","first_name":"Marc","last_name":"Timme"},{"first_name":"Björn","last_name":"Hof","id":"3A374330-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0003-2057-2754","full_name":"Hof, Björn"}],"related_material":{"link":[{"relation":"press_release","description":"News on IST Homepage","url":"https://ist.ac.at/en/news/smashing-the-covid-curve/"}]},"date_created":"2021-05-23T22:01:42Z","date_updated":"2023-08-08T13:45:13Z","volume":12,"scopus_import":"1","day":"10","has_accepted_license":"1","article_processing_charge":"No","publication":"Nature Communications","citation":{"apa":"Scarselli, D., Budanur, N. B., Timme, M., & Hof, B. (2021). Discontinuous epidemic transition due to limited testing. Nature Communications. Springer Nature. https://doi.org/10.1038/s41467-021-22725-9","ieee":"D. Scarselli, N. B. Budanur, M. Timme, and B. Hof, “Discontinuous epidemic transition due to limited testing,” Nature Communications, vol. 12, no. 1. Springer Nature, 2021.","ista":"Scarselli D, Budanur NB, Timme M, Hof B. 2021. Discontinuous epidemic transition due to limited testing. Nature Communications. 12(1), 2586.","ama":"Scarselli D, Budanur NB, Timme M, Hof B. Discontinuous epidemic transition due to limited testing. Nature Communications. 2021;12(1). doi:10.1038/s41467-021-22725-9","chicago":"Scarselli, Davide, Nazmi B Budanur, Marc Timme, and Björn Hof. “Discontinuous Epidemic Transition Due to Limited Testing.” Nature Communications. Springer Nature, 2021. https://doi.org/10.1038/s41467-021-22725-9.","short":"D. Scarselli, N.B. Budanur, M. Timme, B. Hof, Nature Communications 12 (2021).","mla":"Scarselli, Davide, et al. “Discontinuous Epidemic Transition Due to Limited Testing.” Nature Communications, vol. 12, no. 1, 2586, Springer Nature, 2021, doi:10.1038/s41467-021-22725-9."},"article_type":"original","date_published":"2021-05-10T00:00:00Z","type":"journal_article","abstract":[{"lang":"eng","text":"High impact epidemics constitute one of the largest threats humanity is facing in the 21st century. In the absence of pharmaceutical interventions, physical distancing together with testing, contact tracing and quarantining are crucial in slowing down epidemic dynamics. Yet, here we show that if testing capacities are limited, containment may fail dramatically because such combined countermeasures drastically change the rules of the epidemic transition: Instead of continuous, the response to countermeasures becomes discontinuous. Rather than following the conventional exponential growth, the outbreak that is initially strongly suppressed eventually accelerates and scales faster than exponential during an explosive growth period. As a consequence, containment measures either suffice to stop the outbreak at low total case numbers or fail catastrophically if marginally too weak, thus implying large uncertainties in reliably estimating overall epidemic dynamics, both during initial phases and during second wave scenarios."}],"issue":"1","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"9407","ddc":["570"],"title":"Discontinuous epidemic transition due to limited testing","status":"public","intvolume":" 12","oa_version":"Published Version","file":[{"access_level":"open_access","file_name":"2021_NatureCommunications_Scarselli.pdf","file_size":1176573,"content_type":"application/pdf","creator":"kschuh","relation":"main_file","file_id":"9426","checksum":"fe26c1b8a7da1ae07a6c03f80ff06ea1","success":1,"date_created":"2021-05-25T14:18:40Z","date_updated":"2021-05-25T14:18:40Z"}]},{"date_created":"2021-06-06T22:01:30Z","date_updated":"2023-08-08T13:58:41Z","volume":919,"author":[{"full_name":"Marensi, Elena","last_name":"Marensi","first_name":"Elena","id":"0BE7553A-1004-11EA-B805-18983DDC885E"},{"last_name":"He","first_name":"Shuisheng","full_name":"He, Shuisheng"},{"full_name":"Willis, Ashley P.","last_name":"Willis","first_name":"Ashley P."}],"publication_status":"published","publisher":"Cambridge University Press","department":[{"_id":"BjHo"}],"year":"2021","acknowledgement":"The anonymous referees are kindly acknowledged for their useful suggestions andcomments.","file_date_updated":"2021-08-03T09:53:28Z","article_number":"A17","language":[{"iso":"eng"}],"doi":"10.1017/jfm.2021.371","isi":1,"quality_controlled":"1","tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"external_id":{"isi":["000653785000001"],"arxiv":["2008.13486"]},"oa":1,"month":"07","publication_identifier":{"issn":["00221120"],"eissn":["14697645"]},"file":[{"file_name":"2021_JournalFluidMechanics_Marensi.pdf","access_level":"open_access","creator":"kschuh","content_type":"application/pdf","file_size":4087358,"file_id":"9766","relation":"main_file","date_created":"2021-08-03T09:53:28Z","date_updated":"2021-08-03T09:53:28Z","success":1,"checksum":"867ad077e45c181c2c5ec1311ba27c41"}],"oa_version":"Published Version","status":"public","ddc":["530"],"title":"Suppression of turbulence and travelling waves in a vertical heated pipe","intvolume":" 919","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","_id":"9467","abstract":[{"lang":"eng","text":"Turbulence in the flow of fluid through a pipe can be suppressed by buoyancy forces. As the suppression of turbulence leads to severe heat transfer deterioration, this is an important and undesirable phenomenon in both heating and cooling applications. Vertical flow is often considered, as the axial buoyancy force can help drive the flow. With heating measured by the buoyancy parameter 𝐶, our direct numerical simulations show that shear-driven turbulence may either be completely laminarised or it transitions to a relatively quiescent convection-driven state. Buoyancy forces cause a flattening of the base flow profile, which in isothermal pipe flow has recently been linked to complete suppression of turbulence (Kühnen et al., Nat. Phys., vol. 14, 2018, pp. 386–390), and the flattened laminar base profile has enhanced nonlinear stability (Marensi et al., J. Fluid Mech., vol. 863, 2019, pp. 50–875). In agreement with these findings, the nonlinear lower-branch travelling-wave solution analysed here, which is believed to mediate transition to turbulence in isothermal pipe flow, is shown to be suppressed by buoyancy. A linear instability of the laminar base flow is responsible for the appearance of the relatively quiescent convection driven state for 𝐶≳4 across the range of Reynolds numbers considered. In the suppression of turbulence, however, i.e. in the transition from turbulence, we find clearer association with the analysis of He et al. (J. Fluid Mech., vol. 809, 2016, pp. 31–71) than with the above dynamical systems approach, which describes better the transition to turbulence. The laminarisation criterion He et al. propose, based on an apparent Reynolds number of the flow as measured by its driving pressure gradient, is found to capture the critical 𝐶=𝐶𝑐𝑟(𝑅𝑒) above which the flow will be laminarised or switch to the convection-driven type. Our analysis suggests that it is the weakened rolls, rather than the streaks, which appear to be critical for laminarisation."}],"type":"journal_article","date_published":"2021-07-25T00:00:00Z","article_type":"original","publication":"Journal of Fluid Mechanics","citation":{"chicago":"Marensi, Elena, Shuisheng He, and Ashley P. Willis. “Suppression of Turbulence and Travelling Waves in a Vertical Heated Pipe.” Journal of Fluid Mechanics. Cambridge University Press, 2021. https://doi.org/10.1017/jfm.2021.371.","short":"E. Marensi, S. He, A.P. Willis, Journal of Fluid Mechanics 919 (2021).","mla":"Marensi, Elena, et al. “Suppression of Turbulence and Travelling Waves in a Vertical Heated Pipe.” Journal of Fluid Mechanics, vol. 919, A17, Cambridge University Press, 2021, doi:10.1017/jfm.2021.371.","apa":"Marensi, E., He, S., & Willis, A. P. (2021). Suppression of turbulence and travelling waves in a vertical heated pipe. Journal of Fluid Mechanics. Cambridge University Press. https://doi.org/10.1017/jfm.2021.371","ieee":"E. Marensi, S. He, and A. P. Willis, “Suppression of turbulence and travelling waves in a vertical heated pipe,” Journal of Fluid Mechanics, vol. 919. Cambridge University Press, 2021.","ista":"Marensi E, He S, Willis AP. 2021. Suppression of turbulence and travelling waves in a vertical heated pipe. Journal of Fluid Mechanics. 919, A17.","ama":"Marensi E, He S, Willis AP. Suppression of turbulence and travelling waves in a vertical heated pipe. Journal of Fluid Mechanics. 2021;919. doi:10.1017/jfm.2021.371"},"day":"25","article_processing_charge":"Yes (via OA deal)","has_accepted_license":"1","scopus_import":"1"},{"article_processing_charge":"No","day":"18","article_type":"letter_note","citation":{"chicago":"Yalniz, Gökhan, Björn Hof, and Nazmi B Budanur. “Coarse Graining the State Space of a Turbulent Flow Using Periodic Orbits.” Physical Review Letters. American Physical Society, 2021. https://doi.org/10.1103/PhysRevLett.126.244502.","mla":"Yalniz, Gökhan, et al. “Coarse Graining the State Space of a Turbulent Flow Using Periodic Orbits.” Physical Review Letters, vol. 126, no. 24, 244502, American Physical Society, 2021, doi:10.1103/PhysRevLett.126.244502.","short":"G. Yalniz, B. Hof, N.B. Budanur, Physical Review Letters 126 (2021).","ista":"Yalniz G, Hof B, Budanur NB. 2021. Coarse graining the state space of a turbulent flow using periodic orbits. Physical Review Letters. 126(24), 244502.","apa":"Yalniz, G., Hof, B., & Budanur, N. B. (2021). Coarse graining the state space of a turbulent flow using periodic orbits. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.126.244502","ieee":"G. Yalniz, B. Hof, and N. B. Budanur, “Coarse graining the state space of a turbulent flow using periodic orbits,” Physical Review Letters, vol. 126, no. 24. American Physical Society, 2021.","ama":"Yalniz G, Hof B, Budanur NB. Coarse graining the state space of a turbulent flow using periodic orbits. Physical Review Letters. 2021;126(24). doi:10.1103/PhysRevLett.126.244502"},"publication":"Physical Review Letters","date_published":"2021-06-18T00:00:00Z","type":"journal_article","issue":"24","abstract":[{"text":"We show that turbulent dynamics that arise in simulations of the three-dimensional Navier--Stokes equations in a triply-periodic domain under sinusoidal forcing can be described as transient visits to the neighborhoods of unstable time-periodic solutions. Based on this description, we reduce the original system with more than 10^5 degrees of freedom to a 17-node Markov chain where each node corresponds to the neighborhood of a periodic orbit. The model accurately reproduces long-term averages of the system's observables as weighted sums over the periodic orbits.\r\n","lang":"eng"}],"intvolume":" 126","title":"Coarse graining the state space of a turbulent flow using periodic orbits","status":"public","_id":"9558","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","oa_version":"Preprint","publication_identifier":{"issn":["0031-9007"],"eissn":["1079-7114"]},"month":"06","project":[{"grant_number":"662960","_id":"238598C6-32DE-11EA-91FC-C7463DDC885E","name":"Revisiting the Turbulence Problem Using Statistical Mechanics: Experimental Studies on Transitional and Turbulent Flows"}],"quality_controlled":"1","isi":1,"external_id":{"arxiv":["2007.02584"],"isi":["000663310100008"]},"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/2007.02584"}],"oa":1,"language":[{"iso":"eng"}],"acknowledged_ssus":[{"_id":"ScienComp"}],"doi":"10.1103/PhysRevLett.126.244502","article_number":"244502","department":[{"_id":"GradSch"},{"_id":"BjHo"}],"publisher":"American Physical Society","publication_status":"published","acknowledgement":"We thank the referees for improving this Letter with their comments. We acknowledge stimulating discussions with\r\nH. Edelsbrunner. This work was supported by Grant No. 662960 from the Simons Foundation (B. H.). The numerical calculations were performed at TUBITAK ULAKBIM High Performance and Grid Computing Center (TRUBA resources) and IST Austria High Performance Computing cluster.","year":"2021","volume":126,"date_created":"2021-06-16T15:45:36Z","date_updated":"2023-08-08T14:08:36Z","related_material":{"link":[{"relation":"press_release","description":"News on IST Homepage","url":"https://ist.ac.at/en/news/turbulent-flow-simplified/"}]},"author":[{"full_name":"Yalniz, Gökhan","orcid":"0000-0002-8490-9312","id":"66E74FA2-D8BF-11E9-8249-8DE2E5697425","last_name":"Yalniz","first_name":"Gökhan"},{"first_name":"Björn","last_name":"Hof","id":"3A374330-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0003-2057-2754","full_name":"Hof, Björn"},{"full_name":"Budanur, Nazmi B","first_name":"Nazmi B","last_name":"Budanur","id":"3EA1010E-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0003-0423-5010"}]},{"acknowledgement":"L.S., P.G.Z., and A.I.T. thank the financial support of the European Graphene Flagship Project under grant agreements 881603 and EPSRC grant EP/S030751/1. L.S. and A.I.T. thank the European Union’s Horizon 2020 research and innovation programme under ITN Spin-NANO Marie Sklodowska-Curie grant agreement no. 676108. P.G.Z. and A.I.T. thank the European Union’s Horizon 2020 research and innovation programme under ITN 4PHOTON Marie Sklodowska-Curie grant agreement no. 721394. J.C., S.A.M., and R.S. acknowledge funding by EPSRC (EP/P033369 and EP/M013812). C.L.P., A.J.B., A.I.T., and A.M.F. acknowledge funding by EPSRC Programme Grant EP/N031776/1. S.A.M. acknowledges the Lee-Lucas Chair in Physics, the Solar Energies go Hybrid (SolTech) programme, and the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy - EXC 2089/1 - 390776260.","year":"2021","publication_status":"published","department":[{"_id":"BjHo"}],"publisher":"Springer Nature","author":[{"full_name":"Sortino, Luca","last_name":"Sortino","first_name":"Luca"},{"full_name":"Zotev, Panaiot G.","first_name":"Panaiot G.","last_name":"Zotev"},{"first_name":"Catherine L.","last_name":"Phillips","full_name":"Phillips, Catherine L."},{"first_name":"Alistair J.","last_name":"Brash","full_name":"Brash, Alistair J."},{"full_name":"Cambiasso, Javier","first_name":"Javier","last_name":"Cambiasso"},{"orcid":"0000-0001-7173-4923","id":"0BE7553A-1004-11EA-B805-18983DDC885E","last_name":"Marensi","first_name":"Elena","full_name":"Marensi, Elena"},{"full_name":"Fox, A. Mark","first_name":"A. Mark","last_name":"Fox"},{"full_name":"Maier, Stefan A.","first_name":"Stefan A.","last_name":"Maier"},{"first_name":"Riccardo","last_name":"Sapienza","full_name":"Sapienza, Riccardo"},{"last_name":"Tartakovskii","first_name":"Alexander I.","full_name":"Tartakovskii, Alexander I."}],"date_created":"2021-10-31T23:01:30Z","date_updated":"2023-08-14T08:12:12Z","volume":12,"article_number":"6063","file_date_updated":"2021-11-03T11:31:24Z","tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"oa":1,"external_id":{"isi":["000708601800015"],"arxiv":["2103.16986"]},"isi":1,"quality_controlled":"1","doi":"10.1038/s41467-021-26262-3","language":[{"iso":"eng"}],"month":"10","publication_identifier":{"eissn":["2041-1723"]},"_id":"10203","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","ddc":["530"],"title":"Bright single photon emitters with enhanced quantum efficiency in a two-dimensional semiconductor coupled with dielectric nano-antennas","status":"public","intvolume":" 12","oa_version":"Published Version","file":[{"file_id":"10212","relation":"main_file","success":1,"checksum":"8580d128389860f732028c521cd5949e","date_updated":"2021-11-03T11:31:24Z","date_created":"2021-11-03T11:31:24Z","access_level":"open_access","file_name":"2021_NatComm_Sortino.pdf","creator":"cchlebak","content_type":"application/pdf","file_size":1434201}],"type":"journal_article","abstract":[{"lang":"eng","text":"Single photon emitters in atomically-thin semiconductors can be deterministically positioned using strain induced by underlying nano-structures. Here, we couple monolayer WSe2 to high-refractive-index gallium phosphide dielectric nano-antennas providing both optical enhancement and monolayer deformation. For single photon emitters formed on such nano-antennas, we find very low (femto-Joule) saturation pulse energies and up to 104 times brighter photoluminescence than in WSe2 placed on low-refractive-index SiO2 pillars. We show that the key to these observations is the increase on average by a factor of 5 of the quantum efficiency of the emitters coupled to the nano-antennas. This further allows us to gain new insights into their photoluminescence dynamics, revealing the roles of the dark exciton reservoir and Auger processes. We also find that the coherence time of such emitters is limited by intrinsic dephasing processes. Our work establishes dielectric nano-antennas as a platform for high-efficiency quantum light generation in monolayer semiconductors."}],"publication":"Nature Communications","citation":{"chicago":"Sortino, Luca, Panaiot G. Zotev, Catherine L. Phillips, Alistair J. Brash, Javier Cambiasso, Elena Marensi, A. Mark Fox, Stefan A. Maier, Riccardo Sapienza, and Alexander I. Tartakovskii. “Bright Single Photon Emitters with Enhanced Quantum Efficiency in a Two-Dimensional Semiconductor Coupled with Dielectric Nano-Antennas.” Nature Communications. Springer Nature, 2021. https://doi.org/10.1038/s41467-021-26262-3.","short":"L. Sortino, P.G. Zotev, C.L. Phillips, A.J. Brash, J. Cambiasso, E. Marensi, A.M. Fox, S.A. Maier, R. Sapienza, A.I. Tartakovskii, Nature Communications 12 (2021).","mla":"Sortino, Luca, et al. “Bright Single Photon Emitters with Enhanced Quantum Efficiency in a Two-Dimensional Semiconductor Coupled with Dielectric Nano-Antennas.” Nature Communications, vol. 12, 6063, Springer Nature, 2021, doi:10.1038/s41467-021-26262-3.","ieee":"L. Sortino et al., “Bright single photon emitters with enhanced quantum efficiency in a two-dimensional semiconductor coupled with dielectric nano-antennas,” Nature Communications, vol. 12. Springer Nature, 2021.","apa":"Sortino, L., Zotev, P. G., Phillips, C. L., Brash, A. J., Cambiasso, J., Marensi, E., … Tartakovskii, A. I. (2021). Bright single photon emitters with enhanced quantum efficiency in a two-dimensional semiconductor coupled with dielectric nano-antennas. Nature Communications. Springer Nature. https://doi.org/10.1038/s41467-021-26262-3","ista":"Sortino L, Zotev PG, Phillips CL, Brash AJ, Cambiasso J, Marensi E, Fox AM, Maier SA, Sapienza R, Tartakovskii AI. 2021. Bright single photon emitters with enhanced quantum efficiency in a two-dimensional semiconductor coupled with dielectric nano-antennas. Nature Communications. 12, 6063.","ama":"Sortino L, Zotev PG, Phillips CL, et al. Bright single photon emitters with enhanced quantum efficiency in a two-dimensional semiconductor coupled with dielectric nano-antennas. Nature Communications. 2021;12. doi:10.1038/s41467-021-26262-3"},"article_type":"original","date_published":"2021-10-18T00:00:00Z","scopus_import":"1","day":"18","has_accepted_license":"1","article_processing_charge":"No"}]