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Direct measurement of the temperature profile close to an optically trapped absorbing particle

SYSNO ASEP	0464946
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Direct measurement of the temperature profile close to an optically trapped absorbing particle
Author(s)	Šiler, Martin (UPT-D)_{RID, ORCID, SAI} Ježek, Jan (UPT-D)_{RID, ORCID, SAI} Jákl, Petr (UPT-D)_{RID, ORCID, SAI} Pilát, Zdeněk (UPT-D)_{RID, SAI, ORCID} Zemánek, Pavel (UPT-D)_{RID, SAI, ORCID}
Number of authors	5
Source Title	Optics Letters. - : Optical Society of America - ISSN 0146-9592 Roč. 41, č. 5 (2016), s. 870-873
Number of pages	4 s.
Language	eng - English
Country	US - United States
Keywords	gold nanoparticles ; fluorescence ; spectroscopy ; tweezers
Subject RIV	BH - Optics, Masers, Lasers
R&D Projects	GPP205/12/P868 GA ČR - Czech Science Foundation (CSF)
Institutional support	UPT-D - RVO:68081731
UT WOS	000371029100007
EID SCOPUS	84961575380
DOI	10.1364/OL.41.000870
Annotation	surface temperature of an absorbing particle trapped in optical tweezers (OTs) is measured using a mixture of two fluorescent dyes. We analyze the dependence of temperature on both laser power and the radial distance from its surface, and we verify the 1/r decrease of temperature with increasing distance from the particle surface. We detect the variations of spectral profiles as the medium temperature changes. The temperature dependent signal, i.e., the ratio of summed intensities from two distinct spectral regions, is affected by the convolution of temperature profile with transfer function of the spectroscopic system. We analyze this effect and determine the temperature increase on the surface of a core-shell particle trapped by OTs.
Workplace	Institute of Scientific Instruments
Contact	Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178
Year of Publishing	2017

Number of the records: 1