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.
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 (Presented at SPIE BiOS: January 29, 2018; Published: 20 February 2018); https://doi.org/10.1117/12.2289224.
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