Study of the Behavior of Nanoparticle and Micropatricle in the Standing Wave Trap

0205439 - UPT-D 20010079 RIV US eng C - Conference Paper (international conference)
Ježek, Jan - Zemánek, Pavel - Jonáš, Alexandr - Šerý, Mojmír - Pokorný, Pavel - Liška, M.
Study of the Behavior of Nanoparticle and Micropatricle in the Standing Wave Trap.
Proceedings of the 12th Czech-Slovak-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics (Proc. SPIE 4356). Washington: SPIEThe International Society for Optical Engineering, 2001 - (Peřina, J.; Hrabovský, M.; Křepelka, J.), s. 318-325. ISBN 0-8194-4047-7. ISSN 0277-786X.
[SPIE: Wave and Quantum Aspects of Contemporary Optics. Velké Losiny (CZ), 12.09.2000-15.09.2000]
R&D Projects: GA ČR GA101/98/P106; GA ČR GA202/99/0959; GA ČR GA101/00/0974; GA AV ČR IAC1065004
Institutional research plan: CEZ:AV0Z2065902
Keywords : Gausian standing wave * Lorenz-Mie theory
Subject RIV: BH - Optics, Masers, Lasers

The basic behavior of microparticles placed in the Gaussian standing wave is studied theoretically in this article. It is shown that the optical force depends periodically on the particle size and, as the consequence, the equilibrium object position is alternating between the standing wave antinodes and nodes. It is presented that the particle confinement is disabled for certain particle sizes. Simplified theoretical description giving analytical formulae for weak dielectric spherical objects of micrometer sizes is presented. Coincidence with the generalized Lerenz-Mie theory is studied here. Experimental confirmation of the theoretical results is briefly discused.
Permanent Link: http://hdl.handle.net/11104/0101052