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Dynamic size tuning of multidimensional optically bound matter
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SYSNO ASEP 0388101 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Dynamic size tuning of multidimensional optically bound matter Tvůrce(i) Brzobohatý, Oto (UPT-D) RID, ORCID, SAI
Karásek, Vítězslav (UPT-D) RID, SAI
Šiler, Martin (UPT-D) RID, ORCID, SAI
Zemánek, Pavel (UPT-D) RID, SAI, ORCIDCelkový počet autorů 4 Zdroj.dok. CPS 2012. 18th Czech-Polish-Slovak Optical Conference on Wave and Quantum Aspects of Contemporary Optics (Proceedings of SPIE Vol.8697). - Bellingham : SPIE, 2012 - ISBN 978-0-8194-9481-8 Rozsah stran 86970u: 1-10 Poč.str. 10 s. Forma vydání Tištěná - P Akce CPS 2012. Czech-Polish-Slovak Optical Conference on Wave and Quantum Aspects of Contemporary Optics /18./ Datum konání 03.09.2012-07.09.2012 Místo konání Ostravice Země CZ - Česká republika Typ akce EUR Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova optical binding ; optical tweezers ; dual-beam trap ; self-arrangement ; colloids Vědní obor RIV BH - Optika, masery a lasery CEP GA202/09/0348 GA ČR - Grantová agentura ČR GPP205/11/P294 GA ČR - Grantová agentura ČR ED0017/01/01 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UPT-D - RVO:68081731 UT WOS 000319864100030 EID SCOPUS 84875929010 DOI 10.1117/12.2001101 Anotace Optical binding presents an original method for self- arrangement of solid microparticles in liquid or air. The resulting equilibrium positions of the particles in an optically bound structure (OBS) are not only influenced by the spatial intensity profiles of the incident laser beams but also by the light scattered from all the bound particles. The inter-particle distances in OBSs can be externally modified by changing the refractive index of the medium or the spatial intensity distribution of the beams. Especially the last option is now well developed due to the technology of spatial light modulators (SLM). We utilized this tool to generate OBSs in counterpropagating laser beams having various spatial intensity profiles. In contrast to the previous methods, where OBSs were kept stationary without dynamic control, we modified dynamically the optical cage for self-arranged particles which led to enlargement or shrinking of the OBS. Using elaborate optical fields suitable for particular cases we demonstrated the size tunability of OBSs that were self-arranged along one, two or three dimensions. Compressing of the optical cage below a certain limit led to a collapse of the self-arranged micro-structures, thus indicating a phase transitions in such colloidal structures. Within a system of counter-propagating optical vortices we observed transfer of angular momentum of light to two-dimensional OBSs, revolving around the intrinsic on-axis phase singularity of the trapping beams. Pracoviště Ústav přístrojové techniky Kontakt Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Rok sběru 2013
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