Dr SIDAHMED ABAYZEED SIDAHMED.ABAYZEED2@NOTTINGHAM.AC.UK
ASSISTANT PROFESSOR
Sensitive detection of voltage transients using differential intensity surface plasmon resonance system
Abayzeed, Sidahmed A.; Smith, Richard J.; Webb, Kevin F.; Somekh, Michael G.; See, Chung W.
Authors
Dr Richard Smith RICHARD.J.SMITH@NOTTINGHAM.AC.UK
ASSOCIATE PROFESSOR
Dr KEVIN WEBB KEVIN.WEBB@NOTTINGHAM.AC.UK
ASSOCIATE PROFESSOR
Professor Michael Somekh Michael.Somekh@nottingham.ac.uk
PROFESSOR
Chung W. See
Abstract
This paper describes theoretical and experimental study of the fundamentals of using surface plasmon resonance (SPR) for label-free detection of voltage. Plasmonic voltage sensing relies on the capacitive properties of metal-electrolyte interface that are governed by electrostatic interactions between charge carriers in both phases. Externally-applied voltage leads to changes in the free electron density in the surface of the metal, shifting the SPR position. The study shows the effects of the applied voltage on the shape of the SPR curve. It also provides a comparison between the theoretical and experimental response to the applied voltage. The response is presented in a universal term that can be used to assess the voltage sensitivity of different SPR instruments. Finally, it demonstrates the capacity of the SPR system in resolving dynamic voltage signals; a detection limit of 10mV with a temporal resolution of 5ms is achievable. These findings pave the way for the use of SPR systems in the detection of electrical activity of biological cells.
Citation
Abayzeed, S. A., Smith, R. J., Webb, K. F., Somekh, M. G., & See, C. W. (2017). Sensitive detection of voltage transients using differential intensity surface plasmon resonance system. Optics Express, 25(25), 31552-31567. https://doi.org/10.1364/OE.25.031552
Journal Article Type | Article |
---|---|
Acceptance Date | Aug 11, 2017 |
Online Publication Date | Dec 4, 2017 |
Publication Date | Dec 11, 2017 |
Deposit Date | Oct 2, 2017 |
Publicly Available Date | Dec 4, 2017 |
Journal | Optics Express |
Electronic ISSN | 1094-4087 |
Publisher | Optical Society of America |
Peer Reviewed | Peer Reviewed |
Volume | 25 |
Issue | 25 |
Pages | 31552-31567 |
DOI | https://doi.org/10.1364/OE.25.031552 |
Public URL | https://nottingham-repository.worktribe.com/output/898511 |
Publisher URL | https://www.osapublishing.org/oe/abstract.cfm?uri=oe-25-25-31552 |
Contract Date | Oct 2, 2017 |
Files
oe-25-25-31552.pdf
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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0
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