Plasmoelectronic sensor for real-time on-chip wavelength selective biosensing

Alec Cheney; Borui Chen; Tianmu Zhang; Tim Thomay; Alexander Cartwright

doi:10.1117/12.2252176

22 February 2017 Plasmoelectronic sensor for real-time on-chip wavelength selective biosensing

Alec Cheney, Borui Chen, Tianmu Zhang, Tim Thomay, Alexander Cartwright

Proceedings Volume 10077, Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications XIV; 1007704 (2017) https://doi.org/10.1117/12.2252176
Event: SPIE BiOS, 2017, San Francisco, California, United States

Abstract

Using resistive losses induced by optically excited surface plasmons has shown promise as a CMOS-compatible plasmonic light detector. Increased electron scattering introduced by surface plasmons in an applied current results in a measurable decrease in electrical conductance of a grating, allowing a purely electronic readout of surface plasmon excitation. Accordingly, because of its plasmonic nature, such a detector is dependent on both the wavelength and polarization of incident light with a response time limited by the surface plasmon lifetime. Our ultrafast measurements with electronic read-out indicate that the response time of this detector is on the order of 1ps. Thus such a detector would enable time-resolved biomedical applications such as real-time monitoring of protein structural dynamics for pharmacological applications and research.

Conference Presentation

Citation Download Citation

Alec Cheney, Borui Chen, Tianmu Zhang, Tim Thomay, and Alexander Cartwright "Plasmoelectronic sensor for real-time on-chip wavelength selective biosensing", Proc. SPIE 10077, Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications XIV, 1007704 (22 February 2017); https://doi.org/10.1117/12.2252176

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