Počet záznamů: 1
Direct measurement of the temperature profile close to an optically trapped absorbing particle
- 1.0464946 - ÚPT 2017 RIV US eng J - Článek v odborném periodiku
Šiler, Martin - Ježek, Jan - Jákl, Petr - Pilát, Zdeněk - Zemánek, Pavel
Direct measurement of the temperature profile close to an optically trapped absorbing particle.
Optics Letters. Roč. 41, č. 5 (2016), s. 870-873. ISSN 0146-9592. E-ISSN 1539-4794
Grant CEP: GA ČR GPP205/12/P868
Institucionální podpora: RVO:68081731
Klíčová slova: gold nanoparticles * fluorescence * spectroscopy * tweezers
Kód oboru RIV: BH - Optika, masery a lasery
Impakt faktor: 3.416, rok: 2016
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.
Trvalý link: http://hdl.handle.net/11104/0263683
Počet záznamů: 1