Shinpei Yamamoto

Publication List Details

Period

1980 - 2008

Number

28

Co-Authors

Direct and stepwise energy transfer from excitons to plasmons in close-packed metal and semiconductor nanoparticle monolayer films (2008)

Hosoki, Koshin, Tayagaki, Takeshi, Yamamoto, Shinpei, Matsuda, Kazunari, Kanemitsu, Yoshihiko

We studied the dynamics of photoluminescence (PL) and energy transfer in close-packed monolayer films of CdSe and Au nanoparticles (NPs) assembled using the Langmuir-Blodgett technique. The PL...

Analysis of Gasses Generated by Electrical Discharges in Low Viscosity Silicone Oil (2008)

Endo, Fumihiro, Yamamoto, Shinpei, Sadakane, Takayuki, Yamagishi, Akira, Miyagi, Katsunori, Okubo, Hitoshi

Silicone oil has merits of less flammability and excellent environment-friendliness. High-viscosity silicone oil of 50 cSt has been widely applied to power and distribution transformers. Recently,...

Preparation of Monodisperse and Highly Coercive L10-FePt Nanoparticles Dispersible in Nonpolar Organic Solvents (2006)

Yamamoto, Shinpei, Morimoto, Yasumasa, Tamada, Yoshinari, Takahashi, Y. K., Hono, K., Ono, Teruo, ...

A method to prepare monodisperse and highly coercive L10-FePt nanoparticles which are dispersible in nonpolar organic solvents such as toluene, chloroform, and hexane was developed. By vigorously...

Microscopic Characterization of the L10-FePt Nanoparticles Synthesized by the SiO2-Nanoreactor Method (2006)

Tamada, Yoshinori, Morimoto, Yasumasa, Yamamoto, Shinpei, Hayashi, Naoaki, Takano, Mikio, Nasu, Saburou, ...

We investigated magnetic properties of the L10-FePt nanoparticles synthesized by the SiO2-nanoreactor method by means of Moessbauer spectroscopy from the microscopic point of view. Almost all of the...

Magnetically Superior and Easy to Handle L10-FePt Nanocrystals (2005)

Yamamoto, Shinpei, Morimoto, Yasumasa, Ono, Teruo, Takano, Mikio

We report a successful synthesis of monodisperse L10-FePt nanocrystals which are not only superior in magnetism but also easy to handle through being dispersible in solvents. Thanks to a thick...

Surface Interaction Forces of Well-Defined, High-Density Polymer Brushes Studied by Atomic Force Microscopy (ORGANIC MATERIALS CHEMISTRY-Polymeric Materials) (2000)

Tsujii, Yoshinobu, Yamamoto, Shinpei, Ejaz, Muhammad, Fukuda, Takeshi, Miyamoto, Takeaki

Direct force measurements were made by atomic force microscopy (AFM) at surfaces of polymer brushes comprising low-polydispersity poly(methyl methacrylate) chains densely end-grafted on a silicon...

Controlled Graft Polymerization on Silicon Substrate by the Combined Use of the Langmuir-Blodgett and Atom Transfer Radical Polymerization Techniques (ORGANIC MATERIALS CHEMISTRY-Polymeric Materials) (1998)

Ejaz, Muhammad, Yamamoto, Shinpei, Ohno, Kohji, Tsujii, Yoshinobu, Fukuda, Takeshi, Miyamoto, Takeaki

The atom transfer radical polymerization technique using the copper/ligand complexes was applied to the graft polymerization of methyl methacrylate on the Si wafer on which the monolayer of the...

Distribution of Aspartate Aminotrasnsferase Activity in Yeasts, and Purification and Characterization of Mitochondrial and Cytosolic Isoenzymes from Rhodotorula marina (1990)

Yagi, Toshiharu, Shounaka, Masafumi, Yamamoto, Shinpei

The distribution of aspartate aminotransferase activity in yeasts was determined. The number of species of the enzyme in each yeast was determined by zymogram analysis. All the yeasts, except for the...

Selenophosphate synthetase genes from lung adenocarcinoma cells: Sps1 for recycling l-selenocysteine and Sps2 for selenite assimilation

Tamura, Takashi, Yamamoto, Shinpei, Takahata, Muneaki, Sakaguchi, Hiromich, Tanaka, Hidehiko, Stadtman, Thressa C., ...

A labile selenium donor compound monoselenophosphate is synthesized from selenide and ATP by selenophosphate synthetase (SPS). In the present study, Sps1 and Sps2 were cloned from a cDNA library...

Selenophosphate synthetase genes from lung adenocarcinoma cells: Sps1 for recycling l-selenocysteine and Sps2 for selenite assimilation

Tamura, Takashi, Yamamoto, Shinpei, Takahata, Muneaki, Sakaguchi, Hiromich, Tanaka, Hidehiko, Stadtman, Thressa C., ...

A labile selenium donor compound monoselenophosphate is synthesized from selenide and ATP by selenophosphate synthetase (SPS). In the present study, Sps1 and Sps2 were cloned from a cDNA library...

Effect of the Physicochemical Properties of Poly(Ethylene Glycol) Brushes on their Binding to Cells

McNamee, Cathy E., Yamamoto, Shinpei, Higashitani, Ko

We investigated the effect of the number of oxyethylene groups (polymer molecular weight) and the interchain binding and/or entanglements of methoxy-terminated-poly(ethylene glycol) (m-PEG) brushes...