Forces on a nanoparticle in an optical trap
Optics
2008-10-31 v1 Instrumentation and Detectors
Abstract
Forces on a nanoparticle in an optical trap are analysed. Brownian motion is found to be one of the major challenges to trap a nanoparticle. Accordingly, suitable spatial electric field distribution of laser beam is suggested to enhance the trapping force on a nanoparticle. Theoretical analysis is carried out to obtain conditions for stable optical trap by incorporating the temperature variation at large laser intensities. Numerical analysis is made for single quantum dot of CdS in buffer solution irradiated by an Nd:YAG laser.
Cite
@article{arxiv.0810.5548,
title = {Forces on a nanoparticle in an optical trap},
author = {Kaushik Choudhury and Joseph Thomas Andrews and Pranay Kumar Sen and Pratima Sen},
journal= {arXiv preprint arXiv:0810.5548},
year = {2008}
}
Comments
12 pages, 6 Figures