Field-effect transistor with a plasmonic fiber optic gate electrode as a multivariable biosensor device

Hasler R, Reiner-Rozman C, Fossati S, Aspermair P, Dostalek J, Lee S, Ibáñez M, Bintinger J, Knoll W. 2022. Field-effect transistor with a plasmonic fiber optic gate electrode as a multivariable biosensor device. ACS Sensors. 7(2), 504–512.

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Journal Article | Published | English

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Author
Hasler, Roger; Reiner-Rozman, Ciril; Fossati, Stefan; Aspermair, Patrik; Dostalek, Jakub; Lee, SeunghoISTA ; Ibáñez , MariaISTA ; Bintinger, Johannes; Knoll, Wolfgang
Department
Abstract
A novel multivariable system, combining a transistor with fiber optic-based surface plasmon resonance spectroscopy with the gate electrode simultaneously acting as the fiber optic sensor surface, is reported. The dual-mode sensor allows for discrimination of mass and charge contributions for binding assays on the same sensor surface. Furthermore, we optimize the sensor geometry by investigating the influence of the fiber area to transistor channel area ratio and distance. We show that larger fiber optic tip diameters are favorable for electronic and optical signals and demonstrate the reversibility of plasmon resonance wavelength shifts after electric field application. As a proof of principle, a layer-by-layer assembly of polyelectrolytes is performed to benchmark the system against multivariable sensing platforms with planar surface plasmon resonance configurations. Furthermore, the biosensing performance is assessed using a thrombin binding assay with surface-immobilized aptamers as receptors, allowing for the detection of medically relevant thrombin concentrations.
Publishing Year
Date Published
2022-02-08
Journal Title
ACS Sensors
Acknowledgement
This project has received funding from the European Union’s Horizon 2020 Research and Innovation Programme under the Marie Skłodowska-Curie grant agreement No. 813863- BORGES. Additionally, we gratefully acknowledge the financial support from the Austrian Research Promotion Agency (FFG; 870025 and 873541) for this research. The data that support the findings of this study are openly available in Zenodo (DOI: 10.5281/zenodo.5500360)
Volume
7
Issue
2
Page
504-512
eISSN
IST-REx-ID

Cite this

Hasler R, Reiner-Rozman C, Fossati S, et al. Field-effect transistor with a plasmonic fiber optic gate electrode as a multivariable biosensor device. ACS Sensors. 2022;7(2):504-512. doi:10.1021/acssensors.1c02313
Hasler, R., Reiner-Rozman, C., Fossati, S., Aspermair, P., Dostalek, J., Lee, S., … Knoll, W. (2022). Field-effect transistor with a plasmonic fiber optic gate electrode as a multivariable biosensor device. ACS Sensors. ACS Publications. https://doi.org/10.1021/acssensors.1c02313
Hasler, Roger, Ciril Reiner-Rozman, Stefan Fossati, Patrik Aspermair, Jakub Dostalek, Seungho Lee, Maria Ibáñez, Johannes Bintinger, and Wolfgang Knoll. “Field-Effect Transistor with a Plasmonic Fiber Optic Gate Electrode as a Multivariable Biosensor Device.” ACS Sensors. ACS Publications, 2022. https://doi.org/10.1021/acssensors.1c02313.
R. Hasler et al., “Field-effect transistor with a plasmonic fiber optic gate electrode as a multivariable biosensor device,” ACS Sensors, vol. 7, no. 2. ACS Publications, pp. 504–512, 2022.
Hasler R, Reiner-Rozman C, Fossati S, Aspermair P, Dostalek J, Lee S, Ibáñez M, Bintinger J, Knoll W. 2022. Field-effect transistor with a plasmonic fiber optic gate electrode as a multivariable biosensor device. ACS Sensors. 7(2), 504–512.
Hasler, Roger, et al. “Field-Effect Transistor with a Plasmonic Fiber Optic Gate Electrode as a Multivariable Biosensor Device.” ACS Sensors, vol. 7, no. 2, ACS Publications, 2022, pp. 504–12, doi:10.1021/acssensors.1c02313.
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2022-03-07
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