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Your search keyword '"Kaji, Shiori"' showing total 21 results
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21 results on '"Kaji, Shiori"'

1. A stress sensor, IRE1α, is required for bacterial-exotoxin-induced interleukin-1β production in tissue-resident macrophages

Author

Sasaki, Izumi, Fukuda-Ohta, Yuri, Nakai, Chihiro, Wakaki-Nishiyama, Naoko, Okamoto, Chizuyo, Okuzaki, Daisuke, Morita, Shuhei, Kaji, Shiori, Furuta, Yuki, Hemmi, Hiroaki, Kato, Takashi, Yamamoto, Asumi, Tosuji, Emi, Saitoh, Shin-Ichiroh, Tanaka, Takashi, Hoshino, Katsuaki, Fukuda, Shinji, Miyake, Kensuke, Kuroda, Etsushi, Ishii, Ken J., Iwawaki, Takao, Furukawa, Koichi, and Kaisho, Tsuneyasu

Published
2024
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4. Spin-MEMS microphone integrating a series of magnetic tunnel junctions on a rectangular diaphragm.

Author

Fuji, Yoshihiko, Higashi, Yoshihiro, Masunishi, Kei, Yuzawa, Akiko, Nagata, Tomohiko, Kaji, Shiori, Okamoto, Kazuaki, Baba, Shotaro, Ono, Tomio, and Hara, Michiko

Subjects
SIGNAL-to-noise ratio, MICROELECTROMECHANICAL systems, SPINTRONICS, MAGNETIC tunnelling, MAGNETIC properties
Abstract

We investigate the enhancement of the signal-to-noise ratio (SNR) of spintronic micro-electro mechanical-system (Spin-MEMS) microphones in which spintronic strain-gauge sensors (Spin-SGSs) are integrated on a micro-electro mechanical-system (MEMS) diaphragm by using a large array of N Spin-SGSs connected in series similar to that in a previous report on magnetic tunnel junction magnetic sensors. Since the strain-gauge properties of Spin-SGSs strongly depend on the angle between the applied uniaxial strain and the magnetization direction of the reference layer, in order to obtain the same signals from each Spin-SGS in an array, it is necessary to locate the Spin-SGS array in a region where the uniaxial strain occurs uniformly on the MEMS diaphragm. We theoretically and experimentally investigate the effect of the diaphragm shape on uniaxial strain on the diaphragm surface. As a result, it is found that a rectangular-shaped diaphragm provides a larger region in which a uniform uniaxial strain is applied to the Spin-SGS array compared with the generic circular diaphragm. Finally, an SNR enhancement of 18 dB by connecting N = 62 Spin-SGSs in series is successfully confirmed in a Spin-MEMS microphone with a rectangular diaphragm. [ABSTRACT FROM AUTHOR]

Published
2018
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10. An ultrasensitive spintronic strain-gauge sensor and a spin-MEMS microphone

Author

Fuji, Yoshihiko, primary, Hara, Michiko, additional, Higashi, Yoshihiro, additional, Kaji, Shiori, additional, Masunishi, Kei, additional, Nagata, Tomohiko, additional, Yuzawa, Akiko, additional, Otsu, Kenji, additional, Okamoto, Kazuaki, additional, Baba, Shotaro, additional, Ono, Tomio, additional, Hori, Akio, additional, and Fukuzawa, Hideaki, additional

Published
2018
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12. An Ultra-sensitive Spintronic Strain-gauge Sensor and a Spin-MEMS Microphone

Author

Fuji, Yoshihiko, primary, Hara, Michiko, additional, Higashi, Yoshihiro, additional, Kaji, Shiori, additional, Masunishi, Kei, additional, Nagata, Tomohiko, additional, Yuzawa, Akiko, additional, Otsu, Kenji, additional, Okamoto, Kazuaki, additional, Baba, Shotaro, additional, Ono, Tomio, additional, Hori, Akio, additional, and Fukuzawa, Hideaki, additional

Published
2018
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14. Highly sensitive spintronic strain-gauge sensor based on a MgO magnetic tunnel junction with an amorphous CoFeB sensing layer

Author

Fuji, Yoshihiko, primary, Kaji, Shiori, additional, Hara, Michiko, additional, Higashi, Yoshihiro, additional, Hori, Akio, additional, Okamoto, Kazuaki, additional, Nagata, Tomohiko, additional, Baba, Shotaro, additional, Yuzawa, Akiko, additional, Otsu, Kenji, additional, Masunishi, Kei, additional, Ono, Tomio, additional, and Fukuzawa, Hideaki, additional

Published
2018
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16. An ultrasensitive spintronic strain‐gauge sensor and a spin‐MEMS microphone.

Author

Fuji, Yoshihiko, Hara, Michiko, Higashi, Yoshihiro, Kaji, Shiori, Masunishi, Kei, Nagata, Tomohiko, Yuzawa, Akiko, Otsu, Kenji, Okamoto, Kazuaki, Baba, Shotaro, Ono, Tomio, Hori, Akio, and Fukuzawa, Hideaki

Subjects
MICROELECTROMECHANICAL systems, MAGNETIC fields, THIN films, MAGNETIC tunnelling, FINITE element method
Abstract

This review provides the spintronic strain‐gauge sensor (Spin‐SGS) based on a magnetic tunnel junction (MTJ) with a high gauge factor in excess of 5000, which was realized by adopting a novel amorphous Fe‐B‐based sensing layer with high magnetostriction and low coercivity in a high magnetoresistance Mg‐O barrier MTJ. This review also provides a demonstration of novel "Spintronic MEMS (Spin‐MEMS) microphone," in which a series of Spin‐SGSs are integrated onto a bulk micromachined diaphragm. The Spin‐MEMS microphone exhibits a signal‐to‐noise ratio (SNR) of 57 dB(A) due to the high strain sensitivity of the Spin‐SGSs. [ABSTRACT FROM AUTHOR]

Published
2019
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