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Simple TWRC technique by using optical fiber

Zakaria, Azmi and Noroozi, Monir and Rizwan, Zahid and Sulaiman, Zainal Abidin and Abdul Wahab, Zaidan and Abd. Moksin, Mohd Maarof (2008) Simple TWRC technique by using optical fiber. Infrared Physics and Technology, 51 (3). pp. 270-275. ISSN 1350-4495; ESSN: 1879-0275

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The metalized optical fiber tip was used to generate thermal wave instead of metal foil attached to a tube as in the case of conventional thermal wave resonance cavity (TWRC) technique. The liquid thermal diffusivity was obtained through scanning the cavity length by moving this tip with respect to pyroelectric detector in liquid media, in a thermally thick region. Three-dimensional treatment of the metalized fiber tip was reduced to one-dimensional treatment using diameter of thermal wave generator relatively bigger than that of laser spot size. This applicability can be seen in two diameter size of optical fiber where the thermal diffusivity value of water obtained by this technique agrees with the values obtained by the conventional TWRC technique. This technique has a potential to be used in measuring thermal diffusivity of small liquid volume.

Item Type:Article
Keyword:Pyroelectric; Thermal wave; Thermal diffusivity; Optical fiber
Faculty or Institute:Faculty of Science
DOI Number:10.1016/j.infrared.2007.09.007
ID Code:6642
Deposited By: Najwani Amir Sariffudin
Deposited On:19 May 2010 16:17
Last Modified:23 Sep 2016 16:20

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