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Thermal diffusivity of skin measured by two photothermal techniques

✍ Scribed by S.M. Brown; M.L. Baesso; Jun Shen; R.D. Snook


Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
975 KB
Volume
282
Category
Article
ISSN
0003-2670

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✦ Synopsis


The thermal diffusivity of pig abdomen stratum corneum has been determined using photothermal beam deflection measurements and time-resolved mode mismatched thermal lens spectrometry . The most precise determination (2 .9 Β± 0.5 x 10 -4 cm2 s -1 ) was obtained using the thermal lens technique. The practical utility of both techniques is discussed .


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We have developed a pulsed photothermal radiometry technique for determining the thermal diffusivity parallel to the surface of a polymer film that involves flashing a line-shaped laser beam on the surface of the sample at right angle to its length, and monitoring the temperature change with time at