Journal ArticleDOI
Measurement of thermal diffusivity using a pyroelectric detector
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TLDR
In this paper, a method of measuring the thermal diffusivity of thin layers has been developed and applied to the characterization of laminated structures using pyroelectric detection of a laser generated thermal pulse propagating through the sample.Abstract:
A new method of measuring the thermal diffusivity of thin layers has been developed and applied to the characterization of laminated structures. The thermal diffusivity is measured using pyroelectric detection of a laser generated thermal pulse propagating through the sample. The shape of this pulse is governed by the thermal properties of both the sample and the detector. However, the thermal diffusivity of the sample can be determined from the position of the peak in the pyroelectric signal and the sample thickness. This method can be applied to thermal diffusivity measurements of thin or thick films, laminates, and thermal greases.read more
Citations
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Journal ArticleDOI
Direct pyroelectric detection of optical absorption in non-transparent materials
TL;DR: In this article, a triglycine sulphate (TGS) crystal was used as a pyroelectric sensor, in close thermal contact with the sample, to measure the optical absorption of graphite and anodized Al materials.
Journal ArticleDOI
Pulsed electrothermal technique for measuring the thermal diffusivity of dielectric films on conducting substrates
Siegfried Bauer,Aimé S. De Reggi +1 more
TL;DR: In this article, a simple technique for measuring the thermal diffusivity of dielectric films on thermally sinking substrates is proposed and demonstrated, based on the transient electrical response induced by a thermal pulse applied to a dc voltagebiased sample.
Journal ArticleDOI
Photothermal applications to the thermal analysis of solids
TL;DR: In this article, the spectrum of available techniques, from the conventional photoacoustic detection to novel photothermal laser probing and frequency multiplexing is discussed, and their utilization for the measurement of thermophysical thermal transport-related parameters of solids is presented.
Journal ArticleDOI
Measurement of the thermal diffusivity of thin films with bolometers and with pyroelectric temperature sensors
TL;DR: In this paper, the thermal diffusivity of thin PVDF and polyglutamate polydimethylsilicon (PVDF) films is measured using a pyroelectric sensor.
Journal ArticleDOI
Thermophysical Measurements and Interfacial Adhesion Studies in Ultrathin Polymer Films Using Homodyne Photothermal Spectrometry
M. C. Prystay,J. F. Power +1 more
TL;DR: In this article, the thermal and interfacial properties of assemblies composed of submicron-thickness polymer films deposited on the metallized surface of a pyroelectric thin-film detector were investigated.
References
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Book
Conduction of Heat in Solids
H. S. Carslaw,John Conrad Jaeger +1 more
TL;DR: In this paper, a classic account describes the known exact solutions of problems of heat flow, with detailed discussion of all the most important boundary value problems, including boundary value maximization.
Book
Principles and Applications of Ferroelectrics and Related Materials
TL;DR: In this paper, the theory of ferroelectricity in terms of soft modes and lattice dynamics is developed and modern techniques of measurement, including X-ray, optic, and neutron scattering, infra-red absorption, and magnetic resonance.
Journal ArticleDOI
Investigation of the Electrical Properties of Sr1−xBaxNb2O6 with Special Reference to Pyroelectric Detection
TL;DR: In this paper, the dielectric constants, electrical conductivity, specific heat, and pyroelectric coefficients of ferroelectric Sr1−xBaxNb2O6 (SBN) were investigated as a function of temperature in the range 10°-500°K, and as a result of the Sr/Ba composition of the material.
ReportDOI
Thermophysical properties of sodium
G. H. Golden,J. V. Tokar +1 more
TL;DR: In this article, the FORTRAN subroutine computes enthalphy and entropy of sodium in given state, and composition, molecular weight, volume, and compressibility factor of corresponding vapor.