Zobrazeno 1 - 10
of 164
pro vyhledávání: '"Takayuki Iwasaki"'
Autor:
Yuji Hatano, Junya Tanigawa, Akimichi Nakazono, Takeharu Sekiguchi, Yuta Kainuma, Hiroshi Abe, Shinobu Onoda, Takeshi Ohshima, Takayuki Iwasaki, Mutsuko Hatano
Publikováno v:
Frontiers in Quantum Science and Technology, Vol 3 (2024)
Key implementation points for achieving full accuracy in simultaneous temperature and magnetic field measurement and linearity when applying diamond quantum sensors to electric vehicle (EV) battery monitors were investigated. Both the static and busb
Externí odkaz:
https://doaj.org/article/f78aa209941a44df9adbd36b99be09c7
Autor:
Yuji Hatano, Jaewon Shin, Junya Tanigawa, Yuta Shigenobu, Akimichi Nakazono, Takeharu Sekiguchi, Shinobu Onoda, Takeshi Ohshima, Keigo Arai, Takayuki Iwasaki, Mutsuko Hatano
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-10 (2022)
Abstract Accurate prediction of the remaining driving range of electric vehicles is difficult because the state-of-the-art sensors for measuring battery current are not accurate enough to estimate the state of charge. This is because the battery curr
Externí odkaz:
https://doaj.org/article/8396d7b75cc04911a1abe51aa22bc14b
Autor:
Kosuke Mizuno, Ikuya Fujisaki, Hiroyoshi Tomioka, Hitoshi Ishiwata, Shinobu Onoda, Takayuki Iwasaki, Keigo Arai, Mutsuko Hatano
Publikováno v:
Journal of Physics Communications, Vol 8, Iss 3, p 035002 (2024)
A nitrogen-vacancy (NV) center in a diamond enables the access to an electron spin, which is expected to present highly sensitive quantum sensors. Although exploiting a nitrogen nuclear spin improves the sensitivity, manipulating it using a resonant
Externí odkaz:
https://doaj.org/article/d49a622db7ed4d50a41351f145d351af
Autor:
Keigo Arai, Akihiro Kuwahata, Daisuke Nishitani, Ikuya Fujisaki, Ryoma Matsuki, Yuki Nishio, Zonghao Xin, Xinyu Cao, Yuji Hatano, Shinobu Onoda, Chikara Shinei, Masashi Miyakawa, Takashi Taniguchi, Masatoshi Yamazaki, Tokuyuki Teraji, Takeshi Ohshima, Mutsuko Hatano, Masaki Sekino, Takayuki Iwasaki
Publikováno v:
Communications Physics, Vol 5, Iss 1, Pp 1-10 (2022)
Causes of heart failure can be investigated by tracing imperfections in electrical current propagation on the millimetre scale; however, the spatial resolution of current magnetocardiograph methods are limited to the centimetre-scale. Here, the autho
Externí odkaz:
https://doaj.org/article/6d0562fdf44f4630b9ed8b7c4b0dc5fa
Autor:
Johannes Görlitz, Dennis Herrmann, Philipp Fuchs, Takayuki Iwasaki, Takashi Taniguchi, Detlef Rogalla, David Hardeman, Pierre-Olivier Colard, Matthew Markham, Mutsuko Hatano, Christoph Becher
Publikováno v:
npj Quantum Information, Vol 8, Iss 1, Pp 1-9 (2022)
Abstract Quantum information processing (QIP) with solid state spin qubits strongly depends on the efficient initialisation of the qubit’s desired charge state. While the negatively charged tin-vacancy (SnV−) centre in diamond has emerged as an e
Externí odkaz:
https://doaj.org/article/9095f81db95a489e99c7a6a7f3ec0f89
Publikováno v:
Scientific Reports, Vol 10, Iss 1, Pp 1-10 (2020)
Abstract Spectroscopic analysis of AC magnetic signal using diamond quantum magnetometry is a promising technique for inductive imaging. Conventional dynamic decoupling like XY8 provides a high sensitivity of an oscillating magnetic signal with intri
Externí odkaz:
https://doaj.org/article/06dc4c117b1c4741b678feccff3a4714
Autor:
Ryota Kitagawa, Teruo Kohashi, Takeyuki Tsuji, Shunsuke Nagata, Aoi Nakatsuka, Honami Nitta, Yota Takamura, Shigeki Nakagawa, Takayuki Iwasaki, Mutsuko Hatano
Publikováno v:
Applied Physics Express, Vol 17, Iss 1, p 017002 (2023)
The magnetization process of a soft magnetic CoFeB-SiO _2 thin film was imaged using diamond quantum sensors with perfectly aligned nitrogen-vacancy centers along the [111] direction formed by CVD. Around the film edge, the easy and hard axes directi
Externí odkaz:
https://doaj.org/article/76eba259afcf4171978714bedfeb4206
Autor:
Takayuki Iwasaki, Hiromitsu Kato, Toshiharu Makino, Masahiko Ogura, Daisuke Takeuchi, Satoshi Yamasaki, Mutsuko Hatano
Publikováno v:
IEEE Journal of the Electron Devices Society, Vol 5, Iss 1, Pp 95-99 (2017)
High temperature characteristics of bipolar-mode operation of normally-off diamond junction field-effect transistors were investigated up to 573 K. As an important factor, the current gain depending on the gate current was analyzed with a theoretical
Externí odkaz:
https://doaj.org/article/dac16a652fc2436188143c5d33dc5d80
Autor:
Kosuke Mizuno, Makoto Nakajima, Hitoshi Ishiwata, Yuta Masuyama, Takayuki Iwasaki, Mutsuko Hatano
Publikováno v:
AIP Advances, Vol 8, Iss 12, Pp 125316-125316-7 (2018)
Wide-field quantum magnetometry using nitrogen-vacancy (NV) center in diamond can be a breakthrough for a nuclear magnetic resonance (NMR) in a small volume, which is important for biological applications. Although the coherence time of the electron
Externí odkaz:
https://doaj.org/article/523e3a5a39264b8b989acb750e89ad53
Autor:
Yuta Masuyama, Katsumi Suzuki, Akira Hekizono, Mitsuyasu Iwanami, Mutsuko Hatano, Takayuki Iwasaki, Takeshi Ohshima
Publikováno v:
Sensors, Vol 21, Iss 3, p 977 (2021)
The negatively charged nitrogen-vacancy (NV) center in diamonds is known as the spin defect and using its electron spin, magnetometry can be realized even at room temperature with extremely high sensitivity as well as a high dynamic range. However, a
Externí odkaz:
https://doaj.org/article/1bf5fb39dfaa4503895b8db5e3e9d0fa