Rotational behavior of oblate golden nanoparticles in circularly polarized dual beam optical trap

0452618 - ÚPT 2016 RIV US eng C - Conference Paper (international conference)
Šiler, Martin - Chvátal, Lukáš - Brzobohatý, Oto - Arzola, A. V. - Jákl, Petr - Simpson, Stephen Hugh - Zemánek, Pavel
Rotational behavior of oblate golden nanoparticles in circularly polarized dual beam optical trap.
Optical Trapping and Optical Micromanipulation XII (Proceedings of SPIE 9548). Bellingham: SPIE, 2015, 95481E:1-6. ISBN 9781628417142. ISSN 0277-786X.
[Optical Trapping and Optical Micromanipulation /12./. San Diego (US), 09.08.2015-12.08.2015]
R&D Projects: GA ČR GB14-36681G
Institutional support: RVO:68081731
Keywords : optical tweezers, * ellipsoidal particle * optical force calculation * T-matrix
Subject RIV: BH - Optics, Masers, Lasers

Larger golden nanoparticles grow into several preferred forms. Some of those may be easily approximated by ellipsoids. In this paper we examine the rotational dynamics of spheroidal particles in an optical trap comprising counter-propagating Gaussian beams of opposing helicity. Isolated spheroids undergo continuous rotation with frequencies determined by their size and aspect ratio. We study the rotational frequencies and stability of these golden nano-particles theoretically by the means of T-Matrix.
Permanent Link: http://hdl.handle.net/11104/0253641