[17a-K209-1~8] 1.5 Instrumentation, measurement and Metrology

11:00 AM - 11:15 AM JST(2:00 AM - 2:15 AM UTC)

[17a-K209-5] Development of thermal converters using a diamond heat spreader

〇Yasutaka Amagai¹, Hiromitsu Kato¹, Toshiharu Makino¹, Junya Arakawa², Kenjiro Okawa¹, Hidekazu Muramatsu¹, Norihiko Sakamoto¹, Nobu-Hisa Kaneko¹ (1.AIST, 2.Nikkohm)

Keywords:

Electrical standards,AC voltage/current standard,Diamond heat spreader

We have been developing a thermal converter using a diamond chip as a heat spreader to improve measurement sensitivity. The temperature distribution of a thermal converter using the diamond heat spreader was simulated using a finite element method. Owing to extremely high thermal conductivity of diamond material, the heat spreader effectively distributes the generated heat at the resistive heater toward the hot junction of the thermocouple. The simulation has shown that more uniform temperature distribution would be obtained compared with the previous heat spreader materials such as aluminum and aluminum nitride, expecting an improved measurement sensitivity.