Satoshi Watanabe

The University of Tokyo

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ChemInform Abstract: Reactions of Alkynylselenium Salts with Sodium Benzenesulfinate.

ChemInform (1997)

Tadashi Kataoka Yoshihiro Banno Satoshi Watanabe Takeru Iwamura Hiroshi Shimizu

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

10.1002/chin.199727102

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Low-Energy-Consumption Three-Valued Memory Device Inspired by Solid-State Batteries

ACS Applied Materials & Interfaces (2019)

Yuki Watanabe Shigeru Kobayashi Issei Sugiyama Kazunori Nishio Wei Liu

We report the creation of a low-energy-consumption three-valued memory device based on the switching of open-circuit voltages. This device consists of a stack of Li, Li3PO4 solid electrolyte, and Ni electrode films. We observed reversible voltage switching between high, intermediate, and low open-circuit voltages. According to the scaling law, the energy required to switch a device is estimated to be 8.8 × 10–11 J/μm2 and this value is almost 1/50 of that of a typical dynamic random access memory. Both the high- and low-voltage states converged to the intermediate-voltage state, indicating that the intermediate-voltage state is the most stable metastable state.

Metastability

Open-circuit voltage

10.1021/acsami.9b15366

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Citations (6)

Crystal structure of SoxR

Satoshi Watanabe Akinori Kita K. Kobayashi Kunio Miki

Crystal (programming language)

10.2210/pdb2zhh/pdb

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Development Study on A Micro-Solid Propellant Rocket Array Thruster

The proceedings of the JSME annual meeting (2002)

Shinichiro Tokudome Ryuichiro Hosokawa Syuji TANAKA Keiichi Hori Hirobumi Saito

The authors have developed the practical prototype of a micro-solid propellant rocket array thruster for attitude control of a 10kg class micro-spacecraft. a target of this activity is to build the array thruster with 10000 of solid propellant micro-rockets arrayed on a 100×100mm substrate. The prototype with the Φ0.8 micro-rockets arrayed at a pitch of 1.2mm on a 20×30mm substrate has built and tested so far. Boron/potassium nitrate (NAB) propellant is used with/without initiator of lead rhodanide/potassium chlorate/nitrocellulose (RK). Impulse thrust was measured by means of a pendulum method. The experimental results show that the prototype has proper ignition characteristics and further experimental studies are needed to evaluate and to control the impulse thrust with accuracy. We are planning to conduct the thrust measurement test under vacuum condition.

Specific impulse

Solid-fuel rocket

Rocket (weapon)

10.1299/jsmemecjo.2002.1.0_337

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Citations (1)

Effects of Molecular Dynamics on Electrical Conductance of Single Molecular Junction in Aqueous Solution: First Principles Calculations

e-Journal of Surface Science and Nanotechnology (2010)

Arihiro Tawara Tomofumi Tada Satoshi Watanabe

The electronic transport in benzene-1,4-dithiolate molecule in aqueous solution sandwiched between gold electrodes have been investigated by the ab initio nonequilibrium Green's function method combined with Car-Parrinello molecular dynamics. We have found that the C—S bond length shows clear negative correlation with the conductance both in aqueous solution and vacuum, whereas the Au—S and C—C bond lengths have little correlation. This originates from large local density of states around C—S bonds at the Fermi level. [DOI: 10.1380/ejssnt.2010.38]

Molecular Electronics

10.1380/ejssnt.2010.38

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Citations (1)

Cyclopedic protein expression analysis of cultured canine mammary gland adenocarcinoma cells from six tumours

Research in Veterinary Science (2005)

Takayuki Nakagawa Satoshi Watanabe Emi Ohashi Rina Uyama Shun-roku TAKAUJI

10.1016/j.rvsc.2005.07.011

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Citations (18)

Strengthening Mechanism and an Unique Feature of Martensitic Transformation of Ausformed Steel

Tetsu-to-Hagane (1967)

Satoshi Watanabe Toru ARAKI Hirobumi Miyaji Takashi Yasunaka

Feature (linguistics)

Diffusionless transformation

10.2355/tetsutohagane1955.53.7_893

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高圧圧送による軽量コンクリートおよび高強度・高流動コンクリートの流動性低下の要因に関する一考察

Journal of Structural and Construction Engineering (Transactions of AIJ) (2023)

Takashi Ota Yushi Kato Satoshi Watanabe Keiki YAMAMOTO Shusuke KUROIWA

In this study, the effects of high pressure pumping on the fluidity of concrete were investigated by full-scale pumping tests and laboratory tests. From the result, changes in concrete fluidity due to high pressure pumping were determined. Also, it was possible to evaluate the changes in concrete fluidity by laboratory tests using a compact pumping test equipment. It was found that changes such as an increase in the apparent surface area of the cement particles and a change in the adsorption amount of admixture occurred by applying pressure and shear force to concrete using a compact pumping test equipment.

10.3130/aijs.88.1039

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Ferromagnetism in a Hubbard model for an atomic quantum wire: A realization of flat-band magnetism from even-membered rings

Physical review. B, Condensed matter (1998)

Ryotaro Arita Kazuhiko Kuroki Hideo Aoki Akio Yajima Masaru Tsukada

We have examined as a Hubbard model on a chain of squares, which was as proposed by Yajima et al. as a model of an atomic quantum wire As/Si(100), to show that the flat-band ferromagnetism according to a kind of Mielke-Tasaki mechanism should be realized for an appropriate band filling in such a nonfrustrated lattice. Reflecting the fact that the flat band is not a bottom one, the ferromagnetism vanishes, rather than intensifies, as the Hubbard $U$ is increased. The exact-diagonalization method is used to show that the critical value of $U$ is in a realistic range. We also discussed the robustness of the magnetism against the degradation of the flatness of the band.

Magnetism

Realization (probability)

10.1103/physrevb.57.r6854

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Citations (33)

Single-shot measurement of subpicosecond KrF pulse width by three-photon fluorescence of the XeF visible transition

Optics Letters (1988)

Nobuhiko Sarukura Makoto Watanabe Akira Endoh Satoshi Watanabe

The intensity of the XeF C-A transition induced by a subpicosecond KrF laser is shown to have a cubic dependence on KrF laser intensity. The third-order autocorrelation technique for measuring the duration of a single KrF subpicosecond pulse has been developed utilizing this visible transition. A pulse width of 220 fsec was successfully measured with a high contrast of ~10. The visible fluorescence is more useful to researchers than vacuum-UV fluorescences. Furthermore, this simple technique may be applied over a wide UV wavelength region from 204 to 306 nm.

Photon Counting

Single shot

10.1364/ol.13.000996

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Citations (65)