Topic
Calorimeter
About: Calorimeter is a research topic. Over the lifetime, 5878 publications have been published within this topic receiving 77157 citations.
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TL;DR: In this paper, technical aspects of the three major components of the H1 detector at the electron-proton storage ring HERA are described, up to the end of 1994 when a major upgrade of some of its elements was undertaken.
175 citations
TL;DR: This new scanning calorimeter operates differentially, is equipped with a pair of gold capillary cells and semiconductor sensors, and is able to scan up and down in temperature at user-selected rates.
174 citations
TL;DR: In this paper, a differential AC-chip calorimeter capable of measuring the step in heat capacity at the glass transition in nanometer-thin polymeric films is described, which is about 25% of the total heat capacity of polystyrene.
Abstract: A differential AC-chip calorimeter capable of measuring the step in heat capacity at the glass transition in nanometer-thin films is described. Because of the differential setup, pJ/K sensitivity is achieved. Heat capacity can be measured for sample masses below 1 ng in broad temperature range as needed for the study of the glass transition in nanometer-thin polymeric films. Relative accuracy is sufficient to investigate the changes in heat capacity as the step at the glass transition of polystyrene. The step is about 25% of the total heat capacity of polystyrene. The calorimeter allows for the frequency dependent measurement of complex heat capacity in the frequency range from 1 Hz to 1 kHz. The glass transition in thin polystyrene films (50–4 nm) was determined at well-defined experimental time scales. No thickness dependency of the glass transition temperature was observed within the error limits (±3 K)—neither at constant frequency (40 Hz) nor for the trace in the activation diagram (1 Hz–1 kHz). © 2006 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 44: 2996–3005, 2006
174 citations
TL;DR: A number of test and calibration processes with particular reference to needs in work with thermophile heat conduction microcalorimeters, and some calibration problems for various types of reaction vessel are discussed.
172 citations
TL;DR: The Calvet calorimeter for high-temperature oxide melt solution calorimetry has been commercially available for the past eighteen years and an extensive table of enthalpies of drop solution (sample at room temperature dropped into molten oxide solvent and dissolved) is provided for the user community as mentioned in this paper.
Abstract: To assess progress in high-temperature calorimetry over the past eighteen years, this feature article discusses both technical developments and new areas of application, with primary emphasis on high-temperature oxide melt solution calorimetry. The Calvet calorimeter for such measurements is now commercially available, and an extensive table of enthalpies of drop solution (sample at room temperature dropped into molten oxide solvent in calorimeter and dissolved) is provided for the user community. New developments in methodology are described and applications to nanomaterials, to nitrides and other monoxide materials, and to lanthanides and actinides are given.
170 citations