NDLI: Design and properties of a pyroelectric microcalorimeter

Content Provider	IEEE Xplore Digital Library
Author	Bauer, S. Ploss, B.
Copyright Year	1991
Description	Author affiliation: Inst. fuer Angewandte Phys., Karlsruhe Univ., Germany (Bauer, S.; Ploss, B.)
Abstract	A pyroelectric calorimeter consists of a pyroelectric sensor with the sample directly deposited onto one of the electrodes of the sensor. The arrangement is heated by the absorption of intensity modulated radiation at the other electrode of the pyroelectric sensor. In the case of a homogeneously poled pyroelectric sensor, the quotient of the pyroelectric current, gained at modulation frequencies omega below and above omega =2D/d/sup 2/, with D the thermal diffusivity and d the thickness of the pyroelectric sensor material, directly yields the quotient of the heat capacity of the pyroelectric materials and the sample. Experimental results are shown with a 30 mu m thick LiTaO/sub 3/ crystal and 25 mu m and 9 mu m thick PVDF (polyvinylidene fluoride) films as calorimeter materials, and with 25 mu m thick Ag-foils and a 1.25 mu m thick polyglutamate Langmuir-Blodgett film.<>
Starting Page	911
Ending Page	916
File Size	150618
Page Count	6
File Format	PDF
ISBN	0780301129
DOI	10.1109/ISE.1991.167335
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1991-09-25
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Pyroelectricity Conducting materials Optical materials Electrodes Thermal sensors Crystalline materials Thermal conductivity Piezoelectric films Sensor arrays Absorption
Content Type	Text
Resource Type	Article

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