Behaviour of a non-spherical metal nanoparticle in an optical trap

0437738 - ÚPT 2015 RIV US eng C - Conference Paper (international conference)
Brzobohatý, Oto - Šiler, Martin - Chvátal, Lukáš - Karásek, Vítězslav - Zemánek, Pavel
Behaviour of a non-spherical metal nanoparticle in an optical trap.
19th Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics (Proceedings of SPIE 9441). Bellingham: SPIE, 2014, 944102-1-8. ISBN 9781628415568. ISSN 0277-786X.
[Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics /19./. Jelenia Góra (PL), 08.09.2014-12.09.2014]
R&D Projects: GA ČR GB14-36681G; GA MŠMT(CZ) LO1212; GA MŠMT ED0017/01/01
Institutional support: RVO:68081731
Keywords : metals * nanoparticles * optical trapping * polarization * laser beam propagation * light scattering
Subject RIV: BH - Optics, Masers, Lasers

Even though a nanoparticle is much smaller than the wavelength used for their spatial confinement in an optical trap, the nanoparticle shape strongly influences force interaction between the light and the nanoparticle. The nanoparticle orientation with respect to the beam propagation and polarization strongly influences the light scattering pattern and thus the acting optical forces and torques upon the nanoparticle. We demonstrate experimental and theoretical results concerning the optical trapping of metal nanoparticles and the influence of the trapping wavelength on shaped plasmonic nanoparticles.
Permanent Link: http://hdl.handle.net/11104/0241253