Controlling the shapes and sizes of metallic nanoantennas for detection of biological molecules using hybridization phase of plasmon resonances and photonic lattice modes

Rithvik R. Gutha; Christina Sharp; Waylin J. Wing; Seyed M. Sadeghi

doi:10.1117/12.2289224

20 February 2018 Controlling the shapes and sizes of metallic nanoantennas for detection of biological molecules using hybridization phase of plasmon resonances and photonic lattice modes

Rithvik R. Gutha, Christina Sharp, Waylin J. Wing, Seyed M. Sadeghi

Author Affiliations +

Proceedings Volume 10510, Frontiers in Biological Detection: From Nanosensors to Systems X; 105100O (2018) https://doi.org/10.1117/12.2289224
Event: SPIE BiOS, 2018, San Francisco, California, United States

Abstract

Chemical sensing based on Localized Surface Plasmonic Resonances (LSPR) and the ultra-sharp optical features of surface lattice resonances (SLR) of arrays of metallic nanoantennas have attracted much attention. Recently we studied biosensing based on the transition between LSPR and SLR (hybridization phase), demonstrating significantly higher refractive index sensitivity than each of these resonances individually. In this contribution we study the impact of size and shape of the metallic nanoantennas on the hybridization process and the way they influence application of this process for biosensing, wherein miniscule variation of the refractive index of the environment leads to dramatic changes in the spectral properties of the arrays.

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Rithvik R. Gutha, Christina Sharp, Waylin J. Wing, and Seyed M. Sadeghi "Controlling the shapes and sizes of metallic nanoantennas for detection of biological molecules using hybridization phase of plasmon resonances and photonic lattice modes", Proc. SPIE 10510, Frontiers in Biological Detection: From Nanosensors to Systems X, 105100O (20 February 2018); https://doi.org/10.1117/12.2289224

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