Search

Your search keyword '"Terakado, Nobuaki"' showing total 126 results
Start Over Author "Terakado, Nobuaki"
126 results on '"Terakado, Nobuaki"'

2. Deriving a fundamental equation for macroscopic stress in chemically strengthened glass: A thermodynamic model.

Author

Terakado, Nobuaki, Matsumoto, Kota, Murai, Daichi, Ebukuro, Shingo, Takahashi, Yoshihiro, Kizaki, Kazuro, Fujiwara, Takumi, Orihara, Shuji, and Orihara, Yoshio

Subjects
*NUCLEAR magnetic resonance spectroscopy, *RAMAN spectroscopy, *GLASS, *ION exchange (Chemistry)
Abstract

Traditionally, the stuffing model has been used to describe stress generation in chemically strengthened glass. Nevertheless, the associated unrealistic conditions, including an imaginary volume expansion and its suppression in an adiabatic closed system, inhibit a thorough understanding of the process. In this study, we propose a thermodynamic model in an isothermal open system to enable ion exchange without an imaginary volume expansion. We derive a fundamental equation and verify it using atomistic images obtained by Raman spectroscopy and nuclear magnetic resonance. This study paves the way for further atomistic design and development of strengthened glasses. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

9. Photo-induced bending of amorphous As2S3 bulk and fiber driven by optical torque.

Author

Wada, Masaki, Ishibashi, Yukihide, Terakado, Nobuaki, Kuryu, Kosei, Mitsui, Kazuki, Asahi, Tsuyoshi, and Saitoh, Akira

Abstract

We have shown that typical amorphous chalcogenides, As2S3 bulk with a thickness of 50–100 μm and fiber with a diameter of 100 μm, can be bent by controlling the orientation of linearly polarized light. The bending of the bulk and fiber with thickness and diameter comparable to the optical penetration depth is efficiently generated by irradiation with a light of 2.33 eV, corresponding to the optical bandgap of amorphous As2S3. We have evinced that the bent phenomena of the amorphous As2S3 bulk and fiber are dominantly due to photo-induced anisotropy, fluidity, and optical torque effects. Then, the optical torque when bending occurred on the As2S3 fiber was quantitatively evaluated as ~ 10−7 N‧m in the case of 20 W/cm2 irradiation. The bending of the As2S3 bulk glass and fiber due to the temperature rise by bandgap light irradiation is not dominant. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

46. Thin-film solar-chemical battery: Photo-charging and discharging in amorphous AgAsS2 films.

Author

Terakado, Nobuaki and Tanaka, Keiji

Subjects
*THIN film research, *AMORPHOUS semiconductors, *PHOTOCHEMICAL research, *METALLIC films, *ELECTRIC discharge research
Abstract

We have fabricated a rechargeable photo-chemical battery using ion-hole conducting AgAsS2 films. An asymmetrically-electroded Al/AgAsS2/SnO2 yields photocurrents and upon illumination it is concomitantly charged up. When the illumination is stopped, the stack discharges electricity into an external circuit. This photo-charging and discharging phenomenon is attributed to a photo-chemical modification of Ag-ion distribution in amorphous AgAsS2. [ABSTRACT FROM AUTHOR]

Published
2011
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results