Specific heat spectroscopy: Origins, status and applications of the 3ω method

作者: Norman O. Birge , Paul K. Dixon , Narayanan Menon

DOI: 10.1016/S0040-6031(97)00201-3

关键词: Thermal diffusivityRange (particle radiation)SupercoolingThermodynamicsGlass transitionMaterials scienceThermal conductivityThermal conductionSpectroscopyThermometer

摘要: Abstract We review the technique of ‘specific heat spectroscopy,’ Birge and Nagel. The technique, also called ‘3ω method’ in literature, is nonadiabatic; it based on thermal diffusion into a thick sample from thin metallic film that serves simultaneously as heater thermometer. Specific spectroscopy allows one to measure dynamic specific liquid or solid over frequency range exceeding 6 decades, conductivity more limited range. Designed study supercooled liquids near glass transition, has been used phase transitions biological systems.

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