Institution
Waseda University
Education•Tokyo, Japan•
About: Waseda University is a education organization based out in Tokyo, Japan. It is known for research contribution in the topics: Catalysis & Large Hadron Collider. The organization has 24220 authors who have published 46859 publications receiving 837855 citations. The organization is also known as: Waseda daigaku & Sōdai.
Topics: Catalysis, Large Hadron Collider, Robot, Computer science, Population
Papers published on a yearly basis
Papers
More filters
••
TL;DR: In this paper, the electrochemical preparation of a CoNiFe film with a very high value of Bs (2.0 −2.1 T) was described, which can find applications in miniaturization of electromechanical devices and in high-density magnetic data storage.
Abstract: Magnetic materials are classed as ‘soft’ if they have a low coercivity (the critical field strength Hc required to flip the direction of magnetization). Soft magnetic materials are a central component of electromagnetic devices such as step motors, magnetic sensors, transformers and magnetic recording heads. Miniaturization of these devices requires materials that can develop higher saturation flux density, Bs, so that the necessary flux densities can be preserved on reducing device dimensions, while simultaneously achieving a low coercivity. Common high-Bs soft magnetic films currently in use are electroplated CoFe-based alloys1,2,3,4 electroplated CoNiFe alloys5,6,7 and sputtered Fe-based nanocrystalline8,9,10,11 and FeN films12,13,14. Sputtering is not suitable, however, for fabricating the thick films needed in some applications, for which electrochemical methods are preferred. Here we report the electrochemical preparation of a CoNiFe film with a very high value of Bs (2.0–2.1 T) and a low coercivity. The favourable properties are achieved by avoiding the need for organic additives in the deposition process, which are typically used to reduce internal stresses. Our films also undergo very small magnetostriction, which is essential to ensure that they are not stressed when an external magnetic field is applied (or conversely, that external stresses do not disrupt the magnetic properties). Our material should find applications in miniaturization of electromechanical devices and in high-density magnetic data storage.
343 citations
••
TL;DR: In this paper, the authors present a maintenance framework that shows management cycles of maintenance activities during the product life cycle, identifying technical issues of maintenance and discuss the advances of technologies supporting the change in the role of maintenance.
343 citations
••
National Institutes of Natural Sciences, Japan1, University of Tokyo2, Kyoto University3, Goddard Space Flight Center4, Osaka City University5, Waseda University6, Hirosaki University7, Columbia University8, Nihon University9, Tokyo Keizai University10, Osaka University11, Tohoku University12, Rikkyo University13, University of Texas at Brownsville14, Shibaura Institute of Technology15, Japan Aerospace Exploration Agency16, National Institute of Advanced Industrial Science and Technology17, Tokai University18, National Institute of Information and Communications Technology19, Kindai University20, University of Wisconsin–Milwaukee21, Ochanomizu University22, Liverpool John Moores University23, Lancaster University24, Hiroshima University25, California Institute of Technology26, University of Electro-Communications27, Rochester Institute of Technology28, National Defense Academy of Japan29, Niigata University30, University of Southampton31, Osaka Institute of Technology32, Albert Einstein Institution33, Aristotle University of Thessaloniki34, Nagoya University35, Nagaoka University of Technology36, University of Illinois at Urbana–Champaign37, Tokyo Institute of Technology38
TL;DR: DECi-hertz Interferometer Gravitational wave Observatory (DECIGO) as discussed by the authors is the future Japanese space gravitational wave antenna, which aims at detecting various kinds of gravitational waves between 1 mHz and 100 Hz frequently enough to open a new window of observation for gravitational wave astronomy.
Abstract: DECi-hertz Interferometer Gravitational wave Observatory (DECIGO) is the future Japanese space gravitational wave antenna. It aims at detecting various kinds of gravitational waves between 1 mHz and 100 Hz frequently enough to open a new window of observation for gravitational wave astronomy. The pre-conceptual design of DECIGO consists of three drag-free satellites, 1000 km apart from each other, whose relative displacements are measured by a Fabry–Perot Michelson interferometer. We plan to launch DECIGO in 2024 after a long and intense development phase, including two pathfinder missions for verification of required technologies.
342 citations
••
TL;DR: In this paper, the statistical mechanical theory of stiff chains which can be represented by differentiable space curves is developed by the analogy of the path integral formulation in quantum mechanics, and the second and fourth moments of end-to-end distance of the chain are calculated.
Abstract: The statistical mechanical theory of stiff chains which can be represented by differentiable space curves is developed by the analogy of the path integral formulation in quantum mechanics. The second and fourth moments of end-to-end distance of the chain are calculated. The stretching and contraction of the chain are also taken into account. The Brownian motion of the stiff chain is discussed, and some statistical properties, especially the correlation function of random forces, are determined.
341 citations
••
TL;DR: Recently, flexible porous coordination polymers (3-17) have been synthesized, providing a variety of properties ranging from storage, separation and exchange of guests in their cavities, magnetism, conductivity and catalysis by their frameworks as discussed by the authors.
341 citations
Authors
Showing all 24378 results
Name | H-index | Papers | Citations |
---|---|---|---|
Yusuke Nakamura | 179 | 2076 | 160313 |
Yoshio Bando | 147 | 1234 | 80883 |
Charles Maguire | 142 | 1197 | 95026 |
Kazunori Kataoka | 138 | 908 | 70412 |
Senta Greene | 134 | 1346 | 90697 |
Intae Yu | 134 | 1372 | 89870 |
Kohei Yorita | 131 | 1389 | 91177 |
Wei Xie | 128 | 1281 | 77097 |
Susumu Kitagawa | 125 | 809 | 69594 |
Leon O. Chua | 122 | 824 | 71612 |
Jun Kataoka | 121 | 603 | 54274 |
S. Youssef | 120 | 683 | 65110 |
Katsuhiko Mikoshiba | 120 | 866 | 62394 |
Yusuke Yamauchi | 117 | 1000 | 51685 |
Teruo Okano | 117 | 476 | 47081 |