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Home > Introduction of our tenure-track faculties > Zhang Ya

Introduction of our tenure-track faculties

Zhang Ya

Affiliation Institute of Engineering
Division Division of Advanced Electrical and Electronics Engineering
Research field Nanoelectronics, terahertz
Keyword(S) terahertz single electron transistor MEMS・NEMS
Url http://web.tuat.ac.jp/~zhang
Research experience

・Aug. 2008-Jul. 2011: Beijing Oriental Institute of Metrology, Engineer
・Oct. 2014-Nov. 2014: Institute of Industrial Science, University of Tokyo, doctral researcher
・Nov. 2014-Mar. 2016: Institute of Industrial Science, University of Tokyo, project researcher
・Apr. 2016-Mar. 2018: Institute of Industrial Science, University of Tokyo, project research associate
・Apr. 2018-Present: Tokyo University of Agriculture and Technology, associate professor (tenure track)

Educational background

・Jul. 2006:Tsinghua University, Department of Precision Instruments and Mechanics,Bachelor of Engineering
・Jul. 2008:Tsinghua University, Department of Precision Instruments and Mechanics,Master of Engineering
・Sep. 2014:University of Tokyo, Department of Electrical Engineering and Mechanics,PhD (Engineering)

Awards

・Sep. 2017:14th International Conference on Intersubband Transitions in Quantum Wells (ITQW2017)、 Best Poster Award
・Apr. 2017:Funai Foundation for Information Technology, FFIT Encouragement Award
・Jun. 2016:Terahertz Research Group, Japanese Society of Applied Physics, Outstanding Young Researcher Presentaion Award
・Feb. 2016:Inoue Foundation for Science 、Inoue Research Award for Young Scientists
・May. 2014:41st International Symposium of Compound Semiconductors (ISCS2014), Best Student Paper Award

Selected papers and publications

・S Du, K Yoshida, Y Zhang, I Hamada, K Hirakawa, Nature Photonics, 2018.
・Ya Zhang, Surugu Hosono, Naomi Nagai, and Kazuhiko Hirakawa. Appl. Phys. Lett.,111, 023504. 2017.7.
・Ya Zhang, Kenji Shibata, Naomi Nagai, Camille Ndebeka-Bandou, Gerald Bastard, and Kazuhiko Hirakawa, Phys. Rev. B, 93, 235313. 2016.6.
・Ya Zhang, Kenji Shibata, Naomi Nagai, Camille Ndebeka-Bandou, Gerald Bastard, and Kazuhiko Hirakawa, Appl. Phys. Lett.,107, 103103. 2015.9.
・Ya Zhang, Kenji Shibata, Naomi Nagai, Camille Ndebeka-Bandou, Gerald Bastard, and Kazuhiko Hirakawa, Phys. Rev. B, Rapid communication,91, 241301. 2015.6.
・Ya Zhang, Kenji Shibata, Naomi Nagai, Camille Ndebeka-Bandou, Gerald Bastard, and Kazuhiko Hirakawa, Nano Lett.,15 (2), pp. 1166 -1170. 2015.1.

Research Description

1. THz spectroscopy of carrier dynamics in single quantum nanostructures
We have proposed a novel method for performing THz spectroscopy on single nanostructures by using a single electron transistor (SET) geometry. By doing this, we have realized an experimental method to perform THz spectroscopy on nm-scale systems with a good S/N ratio, which goes much beyond the diffraction limit and is also suitable for studying many other nanomaterials, such as carbon nanotubes, nanowires, single molecules, and even single atoms.
2. Novel uncooled, high-sensitivity, high-speed THz bolometers using MEMS beam resonators (2015-present)
In this work, we have proposed a room temperature, all electrical driving and detecting, very sensitive and fast THz bolometer by using doubly clamped MEMS beam resonators as ultra-sensitive thermistors. Owing to their high Q-factors, MEMS resonators can detect ultra-small changes in the resonance frequency. Our MEMS bolometer detects the shift in the resonance frequency caused by THz heating and achieves high-sensitivity and high-speed operation at room temperature.

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