Journal ArticleDOI
Heat capacity measurements by means of thermal relaxation method in medium temperature range
TLDR
The thermal relaxation method is used to measure heat capacities of small samples in the temperature range around room temperature by using a calorimeter to measure under heat exchange gas.Abstract:
The thermal relaxation method is used to measure heat capacities of small samples in the temperature range around room temperature. The calorimeter is designed to measure under heat exchange gas and a steplike excess heat is applied to the sample by irradiation from a lamp.read more
Citations
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Modulation calorimetry and related techniques
TL;DR: In this paper, various modulation techniques for measuring specific heat, thermal expansivity, temperature derivative of resistance, thermopower, and spectral absorptance are reviewed, due to the periodic nature of temperature oscillations, high sensitivity and excellent temperature resolution are peculiar to all these methods.
Journal ArticleDOI
Thermal relaxation method to determine the specific heat of optical glasses
A.N. Medina,A. M. F. Caldeira,Antonio M. Bento,Mauro Luciano Baesso,J.A. Sampaio,Tomaz Catunda,F. C. G. Gandra +6 more
TL;DR: In this paper, the thermal relaxation method is applied to determine the specific heat of the following optical glasses: undoped chalcohalides (As2S3 and 40PbI2+30Sb2+S3+30As 2S3); undoped and Nd2O3 doped phosphate (38.66P2O5+40.22ZnO+21.12Na2O) and low silica calcium aluminosilicate (47.4CaO+41.5Al2O+7.0
Journal ArticleDOI
Candle-Soot Carbon Nanoparticles in Photoacoustics: Advantages and Challenges for Laser Ultrasound Transmitters
TL;DR: This article provides a review of candle-soot nanoparticle (CSNP) composite laser ultrasound transmitters (LUTs) and compares and contrasts this technology with other carbon-composite designs.
Journal ArticleDOI
Influence of dendrite arm spacing on the thermal conductivity of an aluminum-silicon casting alloy
C. Vázquez-López,A. Calderón,M. E. Rodríguez,Enrique Velasco,S. Cano,Rafael Colás,S. Valtierra +6 more
TL;DR: In this paper, the photoacoustic technique and thermal relaxation method were used to determine the thermal conductivity of some representative samples obtained from an aluminumsilicon casting alloy A319.
Journal ArticleDOI
Thermal analysis of high intensity organic light-emitting diodes based on a transmission matrix approach
Xiangfei Qi,Stephen R. Forrest +1 more
TL;DR: In this paper, a general transmission matrix formalism is used to determine the thermal response of organic light-emitting diodes under high currents normally encountered in ultra-bright illumination conditions.
References
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Journal ArticleDOI
Heat Capacity Measurements on Small Samples at Low Temperatures
R. Bachmann,F. J. DiSalvo,Theodore H. Geballe,Richard L. Greene,Richard Howard,C. N. King,H. C. Kirsch,K. N. Lee,Robert E. Schwall,H. U. Thomas,R. B. Zubeck +10 more
TL;DR: In this paper, the authors describe a new calorimeter for measuring heat capacity in the range 1-35 K, using a silicon chip bolometer as sample holder, temperature sensor, and sample heater.
Journal ArticleDOI
Thermal properties of aluminum oxide from 0 to 1,200 k
TL;DR: In this article, an accurate measurement of the heat capacity of a-aluminum ox ide (corundum) from 130 to 1-1700 K was described. But the authors used a drop method with a Bunsen ice calorimeter from 2730 to 1 1700 K.
Journal ArticleDOI
Thermal relaxation calorimetry below 1 K
TL;DR: In this paper, the thermal relaxation method is used to measure heat capacities of small samples from 0.060 to 1.2 K. The accuracy was checked by measuring a 2 g copper sample.
Journal ArticleDOI
Simple specific heat measurements at low temperatures
D Durek,J Baturic-Rubcic +1 more
TL;DR: In this paper, a low-temperature calorimetric technique for heat capacity measurement of small samples is described, where the sample is connected by thermal resistance to a thermal sink at a chosen temperature.