Non-spherical gold nanoparticles trapped in optical tweezers: Shape matters

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F15%3A00446048" target="_blank" >RIV/68081731:_____/15:00446048 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1364/OE.23.008179" target="_blank" >http://dx.doi.org/10.1364/OE.23.008179</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1364/OE.23.008179" target="_blank" >10.1364/OE.23.008179</a>

Result language

angličtina

Original language name

Non-spherical gold nanoparticles trapped in optical tweezers: Shape matters

Original language description

We present the results of a theoretical analysis focused on three-dimensional optical trapping of non-spherical gold nanoparticles using a tightly focused laser beam (i.e. optical tweezers). We investigate how the wavelength of the trapping beam enhancestrapping stiffness and determines the stable orientation of nonspherical nanoparticles in the optical trap which reveals the optimal trapping wavelength. We consider nanoparticles with diameters being between 20 nm and 254 nm illuminated by a highly focused laser beam at wavelength 1064 nm and compare our results based on the coupled-dipole method with published theoretical and experimental data. We demonstrate that by considering the non-spherical morphology of the nanoparticle we can explain the experimentally observed three-dimensional trapping of plasmonic nanoparticles with size higher than 170 nm. These results will contribute to a better understanding of the trapping and alignment of real metal nanoparticles in optical tweezers

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BH - Optics, masers and lasers

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Optics Express

ISSN

1094-4087

e-ISSN

—

Volume of the periodical

23

Issue of the periodical within the volume

7

Country of publishing house

US - UNITED STATES

Number of pages

11

Pages from-to

8179-8189

UT code for WoS article

000352290000022

EID of the result in the Scopus database

2-s2.0-84928019891