Date of Award
Physics and Astronomy
Barry L. Zink, Ph.D.
Heat capacity, Johnson noise, Low temperature, Thermal trasport
Calorimetric measurments and thermal transport measurments through a-SixNy suspended membranes have been performed to further the understanding of low temperature thin film thermal transport, and understand the interesting physics present within an amorphous dielectric material. The thermal properties of several calorimeters have been measured to understand the geometric dependence on transport phenomenon. We analyze and compare our results with observations of previous measurements, and with those indicating quantum limited thermal transport. We see strong indications of changes to the physical mechanism transporting heat through these materials as temperature changes from 50 mK to 2 K. We have also developed a relaxation calorimetric measurement for use with Johnson Noise Thermometry.
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Bassett, Dain, "Measurement of Low Temperature Thermal Properties of Microcalorimeters Using Johnson Noise Thermometry" (2014). Electronic Theses and Dissertations. 58.
Received from ProQuest