Institution
University of Electro-Communications
Education•Tokyo, Japan•
About: University of Electro-Communications is a education organization based out in Tokyo, Japan. It is known for research contribution in the topics: Laser & Robot. The organization has 8041 authors who have published 16950 publications receiving 235832 citations. The organization is also known as: UEC & Denki-Tsūshin Daigaku.
Topics: Laser, Robot, Ion, Mobile robot, Fiber laser
Papers published on a yearly basis
Papers
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Nagoya University1, University of Tokyo2, Kyoto University3, Hosei University4, University of Electro-Communications5, Japan Aerospace Exploration Agency6, Yukawa Institute for Theoretical Physics7, University of Birmingham8, Hirosaki University9, Nihon University10, Fukuoka University11, Tokyo Keizai University12, Otemon Gakuin University13, Kyoto Sangyo University14, Rikkyo University15, College of Industrial Technology16, Yokohama National University17, National Institute of Information and Communications Technology18, Osaka City University19, Osaka University20, Leibniz University of Hanover21, Liverpool John Moores University22, KEK23, Hiroshima University24, Waseda University25, Ryukoku University26, Niigata University27, Niigata College of Technology28, Max Planck Society29, Osaka Institute of Technology30, Tokyo Institute of Technology31, Nagaoka University of Technology32, University of the Ryukyus33, University of Virginia34, Beijing Normal University35
TL;DR: The Deci-hertz Interferometer Gravitational Wave Observatory (DECIGO) is a future Japanese space mission with a frequency band of 0.1 Hz to 10 Hz as discussed by the authors.
Abstract: The Deci-hertz Interferometer Gravitational Wave Observatory (DECIGO) is a future Japanese space mission with a frequency band of 0.1 Hz to 10 Hz. DECIGO aims at the detection of primordial gravitational waves, which could have been produced during the inflationary period right after the birth of the Universe. There are many other scientific objectives of DECIGO, including the direct measurement of the acceleration of the expansion of the Universe, and reliable and accurate predictions of the timing and locations of neutron star/black hole binary coalescences. DECIGO consists of four clusters of observatories placed in heliocentric orbit. Each cluster consists of three spacecraft, which form three Fabry-Perot Michelson interferometers with an arm length of 1000 km. Three DECIGO clusters will be placed far from each other, and the fourth will be placed in the same position as one of the other three to obtain correlation signals for the detection of primordial gravitational waves. We plan to launch B-DECIGO, which is a scientific pathfinder for DECIGO, before DECIGO in the 2030s to demonstrate the technologies required for DECIGO, as well as to obtain fruitful scientific results to further expand multi-messenger astronomy.
101 citations
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TL;DR: In this article, the development of submicrocrystalline structures in Fe-20 pct Cr ferritic stainless steel was studied in multidirectional forging to large total strains.
Abstract: The development of submicrocrystalline structures in Fe-20 pct Cr ferritic stainless steel was studied in multidirectional forging to large total strains. The structural changes are characterized by the development of microshear bands in high density dislocation substructures. The multidirectional deformation promotes the multiple shearing, which results in the formation of a spatial net of mutually crossed microshear bands subdividing the original grains. The new grains with high-angle boundaries appear primarily at the microshear band intersections and subsequently along the bands. The fraction of ultrafine grains gradually increases with increasing the density of microshear bands as a result of continuous increase in misorientations among deformation subgrains during processing. An increase in the processing temperature can accelerate remarkably the kinetics of ultrafine grain evolution at large strains. The mechanism of strain-induced grain formation is discussed in detail.
101 citations
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TL;DR: In this article, the reflectivity and other optical constants of metals at high temperatures are discussed on the basis of the Drude theory and the theory of electron-phonon collision.
Abstract: The reflectivity and other optical constants of metals at high temperatures are discussed on the basis of the Drude theory and the theory of electron‐phonon collision. The electron‐phonon collision frequency is dependent on the temperature through the temperature dependence of the phonon population. The temperature dependence of the collision frequency determines that of optical properties of metals. Variations of the real and the imaginary parts of the dielectric constant and of the complex refractive index with temperature are considered. General expressions for the temperature coefficients of the optical constants are given. The reflectivity is shown to decrease with increasing temperature. Numerical calculations were carried out for several metals at a few wavelengths and at temperatures from room temperature to their melting temperatures. The results are given in graphs and in a table. Curves for the reflectivity show that the absolute value of the temperature coefficient of the reflectivity is greater for a metal having a lower reflectivity at room temperature. Calculated values of the reflectivity at room temperature are in reasonable agreement with handbook data. However, the calculated reflectivity for silver at its melting point is not coincident with the reported experimental data (the only data available at present), in spite of the qualitative agreement between our results and the experiment. A brief discussion on possible explanations of the discrepancy is made.
101 citations
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TL;DR: In this paper, an electron-beam ion trap (EBIT) was constructed to facilitate the creation and study of highly charged ions, and some preliminary results are presented which demonstrate the devices capability to produce and study highly charged ion.
Abstract: We have constructed an electron-beam ion trap (EBIT) to facilitate the creation and study of highly charged ions. After a brief introduction to EBITs in general, we describe the design of the new device, highlighting its unique features. Some preliminary results are presented which demonstrate the devices capability to produce and study highly charged ions.
100 citations
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TL;DR: In this article, the excited-state lifetime of a model chromophore of the green fluorescent protein (GFP) substantially increases from subpicoseconds in low-viscosity solvents such as ethanol to 30 ps in glycerol (η = 9.9 × 103 cP) and reaches 2.1 ns at 150 K.
Abstract: Time-resolved fluorescence measurements at 275 K show that the excited-state lifetime of a model chromophore of the green fluorescent protein (GFP) substantially increases from subpicoseconds in low-viscosity solvents such as ethanol (η = 1.7 cP) to 30 ps in glycerol (η = 9.9 × 103 cP) and reaches 2.1 ns in glycerol glass at 150 K. At high temperatures the similarity of excited-state decay and ground-state recovery kinetics indicates internal conversion being responsible for the short fluorescence lifetimes. Their viscosity dependence reflects on a motion with a considerable amplitude that is damped by viscous drag and outweighs thermal activation as is concluded from measurements at different temperatures. In solution the neutral and the anionic forms of the model chromophore are similarly nonfluorescent in contrast to wild-type GFP and mutants where the deprotonated form is hardly undergoing internal conversion. Thus, the protein selectively restricts motional degrees of freedom of the chromophore in sp...
100 citations
Authors
Showing all 8079 results
Name | H-index | Papers | Citations |
---|---|---|---|
Mildred S. Dresselhaus | 136 | 762 | 112525 |
Matthew Nguyen | 131 | 1291 | 84346 |
Juan Bisquert | 107 | 450 | 46267 |
Dapeng Yu | 94 | 745 | 33613 |
Riichiro Saito | 91 | 502 | 48869 |
Shun-ichi Amari | 90 | 495 | 40383 |
Shigeru Nagase | 76 | 617 | 22099 |
Ingrid Verbauwhede | 72 | 575 | 21110 |
Satoshi Hasegawa | 69 | 708 | 22153 |
Yu Qiao | 69 | 484 | 29922 |
Yukio Tanaka | 68 | 744 | 19942 |
Zhijun Li | 68 | 614 | 14518 |
Iván Mora-Seró | 67 | 235 | 23229 |
Kazuo Tanaka | 63 | 535 | 27559 |
Da Xing | 63 | 624 | 14766 |