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Ms. Tanarom (NIMT) obtained a Ph.D. through the “NMIJ’s Studying Abroad Program”

Ms. Jutarat Tanarom, a metrologist at Electrical Metrology Department, National Institute of Metrology (Thailand) (NIMT) has received a Ph.D. in Engineering from the Graduate School of Informatics and Engineering, the University of Electro-Communications (UEC) in Japan through the NMIJ’s Studying Abroad Program in December 2021.

In 2016, Ms. Tanarom participated in the “Briefing Session on Studying Abroad for NIMT Staff” hosted by NMIJ to share the information of collaboration between the University in Japan and NMIT.

With a scholarship from Thai government in collaboration with NMIJ, she was accepted as a research student in 2017 and was admitted to a Ph.D. course in 2018 in UEC. In December 2021, she obtained a Doctor of Engineering degree. She says she believes that technical collaboration between NMIJ and NIMT will be more fruitful and is looking forward to continuing the cooperation on quantum devices for the realization of SI Units between NMIJ and NIMT.

Here is the message from her supervisor, Professor SHIMADA Hiroshi, Graduate School of Informatics and Engineering, UEC.

Ms. Tanarom conducted multiple experimental basic researches, applying supercurrent in a superconducting single electron transistor to a practical circuit. When it is combined with conventional superconductive electronics, the small supercurrent's magnitude of transistor poses a serious obstacle. To overcome the obstacle, she studied the way to deal with the increase in supercurrent when transistors are connected in parallel and the changes in properties associated with it. In pursuit of adding new functions to a device using the transistor's supercurrent, she also devised a new principle of a phonon detector and confirmed its operation. The sensitivity of the detector was experimentally found to be approximately 1000 times as large as that of the detector using conventional superconducting tunnel junctions. I expect that the outcomes of her research will be utilized in the research related to heat currents in nanodevices in the future.

From left: Dr. USUDA Takashi (NMIJ), Dr. Jutarat Tanarom (NIMT),
Professor SHIMADA Hiroshi (UEC), Dr. KANEKO Nobu-hisa (NMIJ) , at UEC, December 2021