@inproceedings{af3794b614684b98b63b3488bed3fb87,
title = "Optical trapping of nanoshells near resonance",
abstract = "We examine the enhancement of optical trapping forces due to plasmon resonances of nanoshells. Nanoshells are nanoscale particles with a dielectric core and metallic coating that exhibit tunable plasmon resonances. Theory predicts that the optical trapping force may be three to fifty times larger for trapping-laser wavelengths near resonance than for wavelengths far from resonance [1]. The resonance absorption of nanoshells can be tuned by adjusting the ratio of the radius of the dielectric core, r1, to the total radius, r2 [2]. Using back focal plane detection, we measure the trap stiffness of optical tweezers, from lasers at 973 nm and 1064 nm, for single trapped nanoshells with several different r1/r2 ratios. Enhanced trapping strengths are not found through these measurements done with single wavelength optical traps. A tunable-wavelength laser trap will enable more conclusive results.",
keywords = "Nanoshell, Optical trap, Optical tweezers, Plasmon resonance",
author = "Hester, {Brooke C.} and Kishore, {Rani B.} and Kristian Helmerson and Halas, {Naomi J.} and Carly Levin",
note = "Copyright: Copyright 2008 Elsevier B.V., All rights reserved.; Plasmonics: Metallic Nanostructures and Their Optical Properties VI ; Conference date: 10-08-2008 Through 14-08-2008",
year = "2008",
doi = "10.1117/12.795224",
language = "English (US)",
isbn = "9780819472526",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Plasmonics",
}