eprintid: 1474707
rev_number: 35
eprint_status: archive
userid: 608
dir: disk0/01/47/47/07
datestamp: 2016-04-06 10:24:41
lastmod: 2021-12-20 00:41:19
status_changed: 2016-07-04 14:55:16
type: article
metadata_visibility: show
creators_name: Han, X
creators_name: Jones, PH
title: Evanescent wave optical binding forces on spherical microparticles
ispublished: pub
divisions: UCL
divisions: B04
divisions: C06
divisions: F60
note: Copyright © 2015 Optical Society of America.
abstract: In this Letter, we demonstrate stable optical binding of spherical microparticles in counter-propagating evanescent optical fields formed by total reflection at a dielectric interface. The microspheres are observed to form one-dimensional chains oriented parallel to the direction of propagation of the beams. We characterize the strength of the optical binding interaction by measuring the extent of Brownian position fluctuations of the optically bound microspheres and relating this to a binding spring constant acting between adjacent particles. A stronger binding interaction is observed for particles near the middle of the chain, and the dependence of the binding strength on incident laser power and number of particles in the chain is determined.
date: 2015-09-01
date_type: published
official_url: http://dx.doi.org/10.1364/OL.40.004042
oa_status: green
full_text_type: other
language: eng
primo: open
primo_central: open_green
article_type_text: Journal Article
verified: verified_manual
elements_id: 1053656
doi: 10.1364/OL.40.004042
pii: 324493
lyricists_name: Jones, Philip
lyricists_id: PHJON02
actors_name: Jones, Philip
actors_id: PHJON02
actors_role: owner
full_text_status: public
publication: Optics Letters
volume: 40
number: 17
pagerange: 4042-4045
event_location: United States
issn: 1539-4794
citation:        Han, X;    Jones, PH;      (2015)    Evanescent wave optical binding forces on spherical microparticles.                   Optics Letters , 40  (17)   pp. 4042-4045.    10.1364/OL.40.004042 <https://doi.org/10.1364/OL.40.004042>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/1474707/17/Jones_Han2015-AsSubmitted.pdf