Golden nanoparticle in optical tweezers: influence of shape and orientation on optical trapping

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F16%3A00460213" target="_blank" >RIV/68081731:_____/16:00460213 - isvavai.cz</a>

Result on the web

<a href="http://www.trends.isibrno.cz/" target="_blank" >http://www.trends.isibrno.cz/</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Golden nanoparticle in optical tweezers: influence of shape and orientation on optical trapping

Original language description

Noble metal nanoparticles (NPs) have attracted increased attention in recent years due to various applications of resonant collective oscillations of free electrons excited with light (plasmon resonance). In contrast to bulk metal materials, where this plasmon resonance frequency depends only on the free electron number density, the optical response of gold and silver NPs can be tuned over the visible and near-infrared spectral region by the size and shape of the NP. Precise and remote placement and orientation of NPs inside cells or tissue would provide another degree of control for these applications. A single focused laser beam – optical tweezers – represents the most frequently used arrangement which provides threedimensional (3D) contact-less manipulation with dielectric objects or living cells ranging in size from tens of nanometers to tens of micrometers. It was believed that larger metal NPs behave as tiny mirrors that are pushed by the light beam radiative force along the direction of beam propagation, without a chance to be confined. However, recently several groups have reported successful optical trapping of gold and silver particles as large as 250 nm. Wenoffer an explanation based on the fact that metal nanoparticles naturally occur in various nonsphericalnshapes, and their optical properties differ significantly due to changes in localized plasmon excitation.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

JA - Electronics and optoelectronics

OECD FORD branch

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Project

<a href="/en/project/GB14-36681G" target="_blank" >GB14-36681G: Center of Excellence for Classical and Quantum Interactions in Nanoworld</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

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

Article name in the collection

Proceedings of the 15th International Seminar on Recent Trends in Charged Particle Optics and Surface Physics Instrumentation

ISBN

978-80-87441-17-6

ISSN

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e-ISSN

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Number of pages

2

Pages from-to

64-65

Publisher name

Institute of Scientific Instruments CAS

Place of publication

Brno

Event location

Skalský dvůr

Event date

May 29, 2016

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000391254000029