Experimental and theoretical determination of optical binding forces

0350879 - ÚPT 2011 RIV US eng J - Článek v odborném periodiku
Brzobohatý, Oto - Čižmár, T. - Karásek, Vítězslav - Šiler, Martin - Dholakia, K. - Zemánek, Pavel
Experimental and theoretical determination of optical binding forces.
Optics Express. Roč. 18, č. 24 (2010), s. 25389-25402. ISSN 1094-4087
Grant CEP: GA ČR GA202/09/0348; GA MŠMT OC08034; GA MŠMT(CZ) LC06007; GA MŠMT ED0017/01/01
Výzkumný záměr: CEZ:AV0Z20650511
Klíčová slova: optical binding forces * micro-particles * inter-particle effects * optical manipulation * optical tweezers
Kód oboru RIV: BH - Optika, masery a lasery
Impakt faktor: 3.749, rok: 2010

We present an experimental and theoretical study of long distance optical binding effects acting upon micro-particles placed in a standing wave optical field. In particular we present for the first time quantitatively the binding forces between individual particles for varying inter-particle separations, polarizations and incident angles of the binding beam. Our quantitative experimental data and numerical simulations show that these effects are essentially enhanced due to the presence of a reflective surface in a sample chamber. They also reveal conditions to form stable optically bound clusters of two and three particles in this geometry. We show that the inter-particle separation in the formed clusters can be controlled by altering the angle of the beam incident upon the sample plane. This demonstrates new perspectives for the generation and control of optically bound soft matter and may be useful to understand various inter-particle effects in the presence of reflective surfaces.
Trvalý link: http://hdl.handle.net/11104/0190760