Institution
Tokyo University of Science
Education•Tokyo, Japan•
About: Tokyo University of Science is a education organization based out in Tokyo, Japan. It is known for research contribution in the topics: Thin film & Enantioselective synthesis. The organization has 15800 authors who have published 24147 publications receiving 438081 citations. The organization is also known as: Tōkyō Rika Daigaku & Science University of Tokyo.
Papers published on a yearly basis
Papers
More filters
••
TL;DR: In this article, the band gap and excitonic resonance energies of high-quality bulk single crystals, polycrystalline thin films, and epitaxial layers of CuInSe2 and CuGaSe2 were determined as a function of temperature by means of photoreflectance, optical absorption (OA), and photoluminescence measurements.
Abstract: Band gap and excitonic resonance energies of high-quality bulk single crystals, polycrystalline thin films, and epitaxial layers of CuInSe2 and CuGaSe2 were determined as a function of temperature by means of photoreflectance, optical absorption (OA), and photoluminescence measurements. OA spectra were fit including excitonic absorption from low temperature up to room temperature (RT). The band gap energy of 1.032 eV and free exciton (FE) resonance energy of 1.024 eV were obtained at RT for strain-free CuInSe2 giving an exciton binding energy of 7.5 meV. The band gap energy of both CuInSe2 and CuGaSe2 was found to be essentially independent of the molar ratio of Cu to group-III atom (Cu/III) for near-stoichiometric and Cu-rich samples. The disappearance of the FE absorption in the In-rich (Cu/In<0.88) CuInSe2 thin films was explained by plasma screening of Coulomb interactions. A slight decrease in the band gap energy of the In-rich films was attributed to a degradation of film quality such as high-density defects, grains, and structural disordering. The fundamental band gap energy in strained CuInSe2 and CuGaSe2 epilayers was shown to decrease due to in-plane biaxial tensile strain.
116 citations
••
TL;DR: It is demonstrated that nanosized Au particles have carbon solubility, derived by the formation of Au-C eutectic nanosizing alloy.
Abstract: We demonstrate that nanosized Au particles have carbon solubility. Au-catalyzed carbon material growth by chemical vapor deposition undergoes a structural change, either a carbon nanowire or a single-walled carbon nanotube, depending on the catalyst particle size. This carbon material growth from Au is derived by the formation of Au-C eutectic nanosized alloy.
116 citations
••
TL;DR: The basic principles and characteristics of MSM techniques in optical wireless communications are presented and some block codes that convert information bits to be transmitted to the symbol amplitudes of subcarriers are used to increase the minimum value of the MS electrical waveform.
Abstract: This article overviews multiple-subcarrier modulation techniques in optical wireless communications. The basic principles and characteristics of MSM techniques in optical wireless communications are presented. MSM optical wireless systems are explained where some block codes that convert information bits to be transmitted to the symbol amplitudes of subcarriers are used to increase the minimum value of the MS electrical waveform. MSM optical communications systems using subcarrier signal point sequences (SSPS) that can improve the power efficiency of MSM systems are also explained. The performance of MSM optical communications systems is presented in the intensity modulation with direct detection (IM/DD) channel without dispersion and in atmospheric optical communications where the effects of scintillation exist.
116 citations
••
TL;DR: It is reported on the first successful output of electrons directly from photosystem I of thermophilic cyanobacteria to the gate of a field-effect transistor (FET) by bypassing electron flow via a newly designed molecular wire.
116 citations
••
TL;DR: A highly sensitive in vitro monitoring method using fluorescence correlation spectroscopy (FCS) combined with transmission electron microscopy (TEM) and toxicity assays should facilitate identifying Aβ assembly steps at which inhibition may be beneficial.
116 citations
Authors
Showing all 15878 results
Name | H-index | Papers | Citations |
---|---|---|---|
Kazunori Kataoka | 138 | 908 | 70412 |
Yoichiro Iwakura | 129 | 705 | 64041 |
Kouji Matsushima | 124 | 590 | 56995 |
Masaki Ishitsuka | 103 | 624 | 39383 |
Shinsuke Tanabe | 98 | 722 | 37445 |
Tatsumi Koi | 97 | 411 | 50222 |
Hirofumi Akagi | 94 | 618 | 43179 |
Clifford A. Lowell | 91 | 258 | 23538 |
Teruo Okano | 91 | 605 | 28346 |
László Á. Gergely | 89 | 426 | 60674 |
T. Sumiyoshi | 88 | 855 | 62277 |
Toshinori Nakayama | 86 | 405 | 25275 |
Akihiko Kudo | 86 | 328 | 39475 |
Hans-Joachim Gabius | 85 | 699 | 28085 |
Motohide Tamura | 85 | 1007 | 32725 |