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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 12 — Jun. 16, 2014
  • pp: 14705–14711

Visual micro-thermometers for nanoparticles photo-thermal conversion

Gia Petriashvili, Maria P. De Santo, Ketevan Chubinidze, Ridha Hamdi, and Riccardo Barberi  »View Author Affiliations

Optics Express, Vol. 22, Issue 12, pp. 14705-14711 (2014)

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We present a method to calibrate the light to heat conversion in an aqueous fluid containing nanoparticles. Accurate control of light and heat is of dramatic importance in many fields of science and metal nanoparticles have acquired an increased importance as means to address heat in very small areas when irradiated with an intense light. The proposed method enables to measure the temperature in the environment surrounding nanoparticles, as a function of the exposure time to laser radiation, exploiting the properties of thermochromic cholesteric liquid crystals. This method overcomes the problems of miscibility of nanoparticles in liquid crystals, provides temperature reading at the microscale, since the cholesteric liquid crystal is confined in microdroplets, and it is sensitive to a temperature variation, 28°C-49°C, suitable for biological applications.

© 2014 Optical Society of America

OCIS Codes
(160.3710) Materials : Liquid crystals
(230.3720) Optical devices : Liquid-crystal devices
(160.4236) Materials : Nanomaterials
(160.5293) Materials : Photonic bandgap materials

ToC Category:
Optical Devices

Original Manuscript: February 4, 2014
Revised Manuscript: April 12, 2014
Manuscript Accepted: April 15, 2014
Published: June 9, 2014

Virtual Issues
Vol. 9, Iss. 8 Virtual Journal for Biomedical Optics
June 15, 2014 Spotlight on Optics

Gia Petriashvili, Maria P. De Santo, Ketevan Chubinidze, Ridha Hamdi, and Riccardo Barberi, "Visual micro-thermometers for nanoparticles photo-thermal conversion," Opt. Express 22, 14705-14711 (2014)

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