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 article, the melting point and the heat of fusion for ultrathin films of Sn nanonstructures using multiple evaporation and thermal annealing cycles were investigated.
Abstract: Thermodynamic properties of small structures, such as the melting points and the process of mass transport, can be considerably different compared to material in the bulk form. Calorimetry is the standard experimental technique used to measure thermodynamics properties. However, this technique is extremely difficult to use for the study of small structures because the amount of energy exchanged during the measurement is extremely small - proportional to the amount of material. In order to measure small amounts of thermal energy we have scaled down the physical size of the calorimeter using MEMS technology. This thin-film differential scanning calorimeter has extremely high sensitivity, 0.01 mJ cm2, and is capable of measuring the melting phenomenon of 1 A of Sn deposited onto a SiN surface. In this article we investigate the size dependence of both the melting point and the heat of fusion for ultrathin films of Sn nanonstructures using multiple evaporation and thermal annealing cycles.
29 citations
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TL;DR: In this paper, the enthalpy of solution of aqueous sodium chloride, obtained with an adiabatic solution calorimeter, is compared to a previous equation of state for NaCl(aq).
29 citations
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29 citations
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TL;DR: In this paper, the thermal decomposition of melted 3,4-bis(3-nitro-furazan-4-yl)furoxan (DNTF) in near adiabatic environment was first time investigated by using accelerating rate calorimeter.
Abstract: Thermal decomposition of melted 3,4-bis(3-nitro-furazan-4-yl)furoxan (DNTF) in near adiabatic environment was first time investigated by using accelerating rate calorimeter. Based on the experimental results, the kinetic parameters of exothermic reaction of DNTF under adiabatic condition were calculated. The thermal decomposition parameters, including the initial decomposition temperature, the adiabatic temperature rise and the maximum temperature rise rate, were obtained from the thermal inertia factor. The adiabatic experiment revealed that DNTF has a relatively high initial exothermic decomposition temperature at 180.7 °C. The apparent activated energy Ea and pre-exponential factor A were calculated as 197.54 kJ mol−1 and 7.68 × 1016 s−1, respectively. In addition, self-accelerating decomposition temperature and 5-s delay exploding point of DNTF were also provided, which is consistent with the data obtained by the traditional Wood’s alloy bathy method.
29 citations
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TL;DR: In this article, a detector module using two magnetic calorimeters was built to perform low-temperature measurements of heat and scintillation light generated by particle interaction in a 340 g 40Ca100MoO4 crystal.
Abstract: Metallic magnetic calorimeters (MMCs) are highly sensitive temperature sensors that use the paramagnetic nature of erbium in a metallic host and superconducting electronics usually composed of a superconducting niobium coil and a current sensing superconducting quantum interference device. This article discusses the applicability of MMCs in experimental searches for rare events in particle physics. A detector module using two MMCs was built to perform low-temperature measurements of heat and scintillation light generated by particle interaction in a 340 g 40Ca100MoO4 crystal. The energy transfer mechanism, from incident particles to the components of the heat and light sensors, is described through a thermal model. MMCs, with gold films collecting athermal phonons, can be used over wide ranges of operating temperature and crystal volume without a significant change in detector performances. Rare event searches could thus benefit from MMC-based detectors presenting such flexibility as well as excellent energy resolution and particle discrimination power.
29 citations