Počet záznamů: 1
Three-Dimensional Optical Trapping of a Plasmonic Nanoparticle using Low Numerical Aperture Optical Tweezers
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SYSNO ASEP 0446101 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Three-Dimensional Optical Trapping of a Plasmonic Nanoparticle using Low Numerical Aperture Optical Tweezers Tvůrce(i) Brzobohatý, Oto (UPT-D) RID, ORCID, SAI
Šiler, Martin (UPT-D) RID, ORCID, SAI
Trojek, Jan (UPT-D)
Chvátal, Lukáš (UPT-D) RID, ORCID, SAI
Karásek, Vítězslav (UPT-D) RID, SAI
Paták, Aleš (UPT-D) RID, ORCID, SAI
Pokorná, Zuzana (UPT-D) RID, ORCID, SAI
Mika, Filip (UPT-D) RID, SAI, ORCID
Zemánek, Pavel (UPT-D) RID, SAI, ORCIDCelkový počet autorů 9 Zdroj.dok. Scientific Reports. - : Nature Publishing Group - ISSN 2045-2322
Roč. 5, JAN 29 (2015), 08106:1-9Poč.str. 9 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova discrete-dipole approximation ; gold nanoparticles ; radiation forces ; spectroscopy Vědní obor RIV BH - Optika, masery a lasery CEP GB14-36681G GA ČR - Grantová agentura ČR Institucionální podpora UPT-D - RVO:68081731 UT WOS 000348500800010 EID SCOPUS 84922985325 DOI 10.1038/srep08106 Anotace It was previously believed that larger metal nanoparticles behave as tiny mirrors that are pushed by the light beam radiative force along the direction of beam propagation, without a chance to be confined. However, several groups have recently reported successful optical trapping of gold and silver particles as large as 250 nm. We offer a possible explanation based on the fact that metal nanoparticles naturally occur in various non-spherical shapes and their optical properties differ significantly due to changes in localized plasmon excitation. We demonstrate experimentally and support theoretically three-dimensional confinement of large gold nanoparticles in an optical trap based on very low numerical aperture optics. We showed theoretically that the unique properties of gold nanoprisms allow an increase of trapping force by an order of magnitude at certain aspect ratios. These results pave the way to spatial manipulation of plasmonic nanoparticles using an optical fibre, with interesting applications in biology and medicine. Pracoviště Ústav přístrojové techniky Kontakt Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Rok sběru 2016
Počet záznamů: 1