Search Results - "Nagakubo, Akira"

The angular dependence of magnetization dynamics induced by a GHz range strain pulse by Tojo, Kakeru, Nagakubo, Akira, Ogi, Hirotsugu

“…The dynamics of magnetization is important in spintronics, where the coupling between phonon and magnon attracts much attention. In this work, we study the…”
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Nano-plate biosensor array using ultrafast heat transport through proteins by Ogi, Hirotsugu, Iwagami, Shigeru, Nagakubo, Akira, Taniguchi, Takuya, Ono, Teruo

“…[Display omitted] •This paper proposes novel label-free biosensor with ultrafast heat conduction through proteins.•This completely new type biosensor allows…”
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Elastic constants of GaN grown by the oxide vapor phase epitaxy method by Fukuda, Hiroki, Nagakubo, Akira, Usami, Shigeyoshi, Imanishi, Masayuki, Mori, Yusuke, Ogi, Hirotsugu

“…Oxide vapor phase epitaxy (OVPE) has attracted much attention as a highly efficient method for synthesizing high-quality bulk GaN crystals, but the mechanical…”
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High sensitivity biosensing scheme based on a GHz phononic crystal waveguide by Yuan, Wenlou, Nagakubo, Akira, Wright, Oliver B., Ogi, Hirotsugu

“…We propose a high sensitivity biosensor based on a GHz phononic crystal (PnC) waveguide, and demonstrate its operation by numerical simulations. The geometry…”
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Thermal conduction in isotope diamond thin films studied by pump-probe laser reflectivity measurement by Weng, Hsu Kai, Nagakubo, Akira, Watanabe, Hideyuki, Ogi, Hirotsugu

“…We study the thermal conductivity of isotope-controlled diamond thin films between 0.001% and 99% 13C contents using an ultrafast pump-probe laser experiment…”
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Lattice thermal conductivity in isotope diamond asymmetric superlattices by Weng, Hsu Kai, Nagakubo, Akira, Watanabe, Hideyuki, Ogi, Hirotsugu

“…We study the lattice thermal conductivity of isotope diamond superlattices consisting of 12 C and 13 C diamond layers at various superlattice periods. It is…”
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Thermal Mode Spectroscopy for Thermal Diffusivity of Millimeter-Size Solids by Ogi, Hirotsugu, Ishihara, Tatsuya, Ishida, Hideshi, Nagakubo, Akira, Nakamura, Nobutomo, Hirao, Masahiko

“…Heat conduction possesses (thermal) modes in analogy with acoustics even without oscillation. Here, we establish thermal mode spectroscopy to measure the…”
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Erratum: "Monitoring of Longitudinal-Wave Velocity and Attenuation of SrTiO3 at Low Temperatures Using Picosecond Ultrasound Spectroscopy" by Nagakubo, Akira, Yamamoto, Akihiro, Tanigaki, Kenichi, Ogi, Hirotsugu, Nakamura, Nobutomo, Hirao, Masahiko

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In situ monitoring of electromigration in a single nano wire by picosecond ultrasonics by Nagakubo, Akira, Asanuma, Eriko, Ogi, Hirotsugu

“…Recent nano-scale fabrication has realized the progress of integrated circuits, where current density increases with the downscaling of each electronic…”
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Sensitivity enhancement of hydrogen-gas sensor by sub nm Au on Pd surface of a wireless quartz resonator by Nagakubo, Akira, Matsukura, Tokiya, Ogi, Hirotsugu

“…Hydrogen (H 2 ) is an important source of next-generation energy production. The various H 2 sensors developed to date cannot easily detect very low…”
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MEMS hydrogen gas sensor with wireless quartz crystal resonator by Zhou, Lianjie, Kato, Fumihito, Nakamura, Nobutomo, Oshikane, Yasushi, Nagakubo, Akira, Ogi, Hirotsugu

“…[Display omitted] •Compact MEMS-QCM hydrogen-gas sensor is developed, which shows nearly the highest sensitivity at room temperature.•A large number of…”
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Elastic constant of dielectric nano-thin films using three-layer resonance studied by picosecond ultrasonics by Fukuda, Hiroki, Nagakubo, Akira, Ogi, Hirotsugu

“…Elastic constants and sound velocities of nm order thin films are essential for designing acoustic filters. However, it is difficult to measure them for…”
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Ultrasound-spectroscopic-imaging study on the effects of local mechanical stimulation on living human induced pluripotent stem cells by Fujiwara, Natsumi, Matsumoto, Takaki, Nagakubo, Akira, Kino-oka, Masahiro, Ogi, Hirotsugu

“…Living cells sense various mechanical stimuli and respond to them by adjusting their tissue morphogenesis, self-renewal, and differentiation. Because stem…”
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Enhancement of sensitivity of Pd-based hydrogen-gas sensor by plasma exposure studied by wireless quartz resonator by Zhou, Lianjie, Nakamura, Nobutomo, Nagakubo, Akira, Ogi, Hirotsugu

“…Sensitivity of a hydrogen-gas sensor based on lattice expansion of palladium highly depends on the surface morphology of palladium. We find that the…”
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GHz surface-wave phononic crystal biosensor using a Fano resonance at the bandgap edge by Yuan, Wenlou, Nagakubo, Akira, Wright, Oliver B., Ogi, Hirotsugu

“…We propose an ultrahigh-sensitivity biosensor based on a GHz surface-acoustic-wave nanopillar phononic crystal using a Fano resonance at the bandgap edge. By…”
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Discussion on very small temperature dependence of diamond’s elastic constants by Nagakubo, Akira, Ogi, Hirotsugu, Hirao, Masahiko

“…Diamond shows high Debye temperature (~2200 K) and small Gruneisen parameter (~1), which represent its small anharmonicity. Therefore, the temperature…”
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Development of a focused-ultrasound spectroscopic-imaging system combined with optical imaging for applying mechanical stimulation on living cells and the possibility of selective stimulation for the nucleus by Fujiwara, Natsumi, Ying Tan, Shao, Matsumoto, Takaki, Nagakubo, Akira, Kino-oka, Masahiro, Ogi, Hirotsugu

“…Various techniques have been used for the mechanical stimulation of cells, but most of them require direct contact with cells and can damage them. Here, we…”
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Notice of Removal: Temperature behavior of sound velocity of SiON thin films studied by picosecond ultrasound by Tsuboi, Seiya, Ogi, Hirotsugu, Nagakubo, Akira, Nakamura, Nobutomo, Matsuda, Satoru, Kabe, Yoshiro

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Theoretical study on elastic properties of Si^sub 2^N^sub 2^O by ab initio calculation by Tsuboi, Seiya, Adachi, Kanta, Nagakubo, Akira, Ogi, Hirotsugu

“…The elastic constants of crystalline Si2N2O remain unknown since it was discovered in the 1960s. We determine the nine independent elastic constants of…”
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Theoretical study on elastic properties of Si 2 N 2 O by ab initio calculation by Tsuboi, Seiya, Adachi, Kanta, Nagakubo, Akira, Ogi, Hirotsugu

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