Share Email Print
cover

Proceedings Paper

Photopyroelectric method using a thermal wave resonator cavity for detection of phase transitions in agar
Author(s): R. Medina-Esquivel; J. Martin Yanez-Limon; Juan Jose Alvarado-Gil
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

In this work, the Photopyroelectric (PPE) technique using a Thermal Wave Resonator Cavity (TWRC) is used to measure the thermal diffusivity of agar. We, determine the liquid to gel phase transition temperature as a function of agar concentration, detecting a shift in that temperature. As agar concentration decreases, the phase transition temperatures get lower. The thermal diffusivity of agar as a function of temperature was measure by means of a cavity length variation due to thermal expansion of the TWRC. It was compared against the typical mechanic length variation with a micrometer.

Paper Details

Date Published: 14 February 2005
PDF: 8 pages
Proc. SPIE 5776, Eighth International Symposium on Laser Metrology, (14 February 2005); doi: 10.1117/12.611751
Show Author Affiliations
R. Medina-Esquivel, Ctr. de Investigacion y de Estudios Avanzados del IPN (Mexico)
J. Martin Yanez-Limon, Ctr. de Investigacion y de Estudios Avanzados del IPN (Mexico)
Juan Jose Alvarado-Gil, Ctr. de Investigacion y de Estudios Avanzados del IPN (Mexico)


Published in SPIE Proceedings Vol. 5776:
Eighth International Symposium on Laser Metrology
R. Rodriguez-Vera; F. Mendoza-Santoyo, Editor(s)

© SPIE. Terms of Use
Back to Top