Ultrasensitive Diagnostic Analysis of Au Nanoparticles Optically

Aug 4, 2014 - IEEE Photonics Journal 2017 9 (2), 1-8 ... Optical trapping of Au nanoparticles using SOI photonic crystal slot cavity at sub-mW laser p...
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Letter pubs.acs.org/NanoLett

Ultrasensitive Diagnostic Analysis of Au Nanoparticles Optically Trapped in Silicon Photonic Circuits at Sub-Milliwatt Powers S. Hamed Mirsadeghi and Jeff F. Young* Department of Physics and Astronomy, Advanced Materials and Process Engineering Laboratory, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada S Supporting Information *

ABSTRACT: Silicon microcavity-based optical trapping of Au nanoparticles with diameters as small as ≈24 nm is achieved using optical powers