Sequential trapping of single nanoparticles using a gold plasmonic nanohole array
Optics
2019-08-16 v1
Abstract
We have used a gold nanohole array to trap single polystyrene nanoparticles, with a mean diameter of 30 nm, into separated hot spots located at connecting nanoslot regions. A high trap stiffness of approximately 0.85 fN/(nmmW) at a low incident laser intensity of ~0.51 mW/um2 at 980 nm was obtained. The experimental results were compared to the simulated trapping force and a reasonable match was achieved. This plasmonic array is useful for lab-on-a-chip applications and has particular appeal for trapping multiple nanoparticles with predefined separations or arranged in patterns in order to study interactions between them.
Cite
@article{arxiv.1805.01585,
title = {Sequential trapping of single nanoparticles using a gold plasmonic nanohole array},
author = {Xue Han and Viet Giang Truong and Sile Nic Chormaic},
journal= {arXiv preprint arXiv:1805.01585},
year = {2019}
}