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Reusable wafer-scale plasmonic chiral substrates for sensing applications

Nair, Greshma and Rajan, Rajitha Papukutty and Ghosh, Ambarish (2016) Reusable wafer-scale plasmonic chiral substrates for sensing applications. In: 2016 IEEE Conference on Recent Advances in Lightwave Technology, CRALT 2016, 21 - 23 September 2016, Bangalore, pp. 1-3.

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Official URL: https://doi.org/10.1109/CRALT.2016.8066044


Three dimensional chiral plasmonic nanostructures exhibit large circular dichroism which can be altered by changing the geometry, size of nanostructures and the plasmonic material. Here, we have explored the possibility of using chiral nanostructured films as reusable substrates for sensing the presence of analytes. These wafer-scale fabricated plasmonic substrates show a strong sensitivity to change in the refractive index of the surrounding medium. Crucially, the chiral plasmonic films retain their circular dichroism once the analyte is completely washed off and dried. This methodology of sensing offers a simple solution to the difficulties associated with expensive and time-consuming fabrication steps and device-to-device variability issues often associated with nanoplasmonic sensing devices.

Item Type: Conference Paper
Publisher: Institute of Electrical and Electronics Engineers Inc.
Additional Information: The copyright for this article belongs to the Institute of Electrical and Electronics Engineers Inc.
Keywords: chiral; circular dichroism; plasmonic; resuable; sensing
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Division of Physical & Mathematical Sciences > Physics
Date Deposited: 09 Jun 2022 04:53
Last Modified: 09 Jun 2022 04:53
URI: https://eprints.iisc.ac.in/id/eprint/73190

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