CAREER: Thermal Contact Resistance for Nonmetallic Materials at Cryogenic Temperatures

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ABSTRACT Phelan U/ Hawaii CTS-9501753 Research on the contact resistance between nonmetallic compounds at cryogenic temperatures will performed. This work has applications in mechanical cryocoolers and in applications of high-temperature superconductors. The work will focus on combinations of metallic-nonmetallic and nonmetallic-nonmetallic contacts. The work will use experimental measurements to aid in developing a model of the contact resistance at these conditions with the goal of providing a tool for the thermal design of cryogenic equipment. The education program includes development of advanced nontraditional courses in heat transfer as well as a new undergraduate course in Energy Conversion Systems. Of special note are proposed student exchange programs with a Japanese university and outreach programs to native Hawaiian and Filipino students. These programs have special value for the investigator+s home institution of the University of Hawaii.