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Institution

University of Electro-Communications

EducationTokyo, 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
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Journal ArticleDOI
Seiji Kawamura1, Hiroo Kunimori2, Mizuhiko Hosokawa2, Ryuichi Fujita3, Keiichi Maeda4, Hisa-aki Shinkai5, Takahiro Tanaka6, Yaka Wakabayashi6, Hideki Ishihara7, Kazutaka Nishiyama8, Ken-ichi Ueda9, Kaiki Taro Inoue10, Kazuhiro Yamamoto8, Kunihito Ioka, Feng-Lei Hong11, Yoshiki Tsunesada12, Kenji Numata13, Masaru Shibata6, Hitoshi Kuninaka8, Kazuhiro Hayama1, Chul-Moon Yoo6, Kazuhiro Agatsuma1, Mitsuru Musha9, Shinji Miyoki14, Yasufumi Kojima15, Yumiko Ejiri16, Takamori Akiteru14, Kentaro Somiya4, Dan Chen14, Tadayuki Takahashi8, Shiho Kobayashi17, Mitsuhiro Fukushima1, Takashi Nakamura6, Naoshi Sugiyama18, Yuta Michimura14, Yoshiyuki Obuchi1, Ayaka Shoda14, Kei Kotake1, Shihori Sakata, Takeshi Chiba19, Yoichi Aso14, Shigeo Nagano2, Tomohiro Harada20, Kiwamu Izumi14, Nobuyuki Kanda7, Isao Kawano8, Nobuki Kawashima10, Yasuo Torii1, Motohiro Enoki21, Yoshiaki Himemoto19, Hirotaka Takahashi22, Yudai Suwa6, Hisashi Hirabayashi, Hiroyuki Ito2, Keitaro Takahashi18, Kiyotomo Ichiki18, Kazuhiro Nakazawa14, Morio Toyoshima2, Takashi Hiramatsu6, Hiroyuki Nakano23, Hiroyuki Koizumi8, Ke-Xun Sun24, Toshikazu Ebisuzaki, Kent Yagi6, Takeshi Ikegami11, Koji Arai25, Kouji Nakamura1, Norio Okada1, Takeshi Takashima8, Takehiko Ishikawa8, K. Okada14, Wataru Kokuyama14, Kakeru Takahashi14, Masa-Katsu Fujimoto1, Ryuichi Takahashi26, Ryo Saito14, K. Tsubono14, Osamu Miyakawa14, Ken-ichi Oohara27, Hideyuki Horisawa28, Hideharu Ishizaki1, Shigenori Moriwaki14, Norichika Sago6, Masashi Ohkawa27, Fuminobu Takahashi14, Tatsuaki Hashimoto8, Takashi Sato27, Sachiko Kuroyanagi14, Umpei Miyamoto20, Kazuaki Kuroda14, Toshifumi Futamase29, Fumiko Kawazoe, Hideyuki Tagoshi30, Yoshinori Nakayama31, Masatake Ohashi14, Yoshiharu Eriguchi14, Toshitaka Yamazaki1, Tadashi Takano19, Hiroshi Yamakawa6, Kenta Kiuchi6, Ken-ichi Nakao7, Taiga Noumi14, Kazunori Kohri, Shinichi Nakasuka14, Wataru Hikida30, Hideo Matsuhara8, Isao Naito27, Tomotada Akutsu1, Shijun Yoshida29, Nobuyuki Matsumoto14, Masa-aki Sakagami6, Naoko Ohishi1, Ikkoh Funaki8, Hajime Sotani32, Taizoh Yoshino16, Atsushi Taruya14, Mutsuko Y. Morimoto8, E. Nishida16, Atsushi J. Nishizawa6, Hideki Asada26, Toshiyuki Morisawa6, Shinji Mukohyama14, Shuichi Sato33, Keisuke Taniguchi14, Yousuke Itoh34, Shinji Tsujikawa35, Rieko Suzuki16, Keiko Kokeyama36, Misao Sasaki6, Naoki Seto6, Koji Ishidoshiro14, Ryutaro Takahashi1, Shin-ichiro Sakai8, Hiroyuki Tashiro6, Motoyuki Saijo20, Naoko Kishimoto6, Masaki Ando6, Akitoshi Ueda1, Koh-suke Aoyanagi4, Yoshihide Kozai, Masayoshi Utashima8, Yoshito Niwa14, Jun'ichi Yokoyama14, Nobuyuki Tanaka1, Akito Araya14 

614 citations

Journal ArticleDOI
TL;DR: In this paper, the spin degree of freedom of electrons and/or holes, which can also interact with their orbital moments, is described with respect to the spin generation methods as detailed in Sections 2-~-9.

614 citations

Journal ArticleDOI
TL;DR: A tutorial that covers the key aspects of elastic optical networks, and explores the experimental demonstrations that have tested the functionality of the elastic optical network, along with the research challenges and open issues posed by flexible networks.
Abstract: Flexgrid technology is now considered to be a promising solution for future high-speed network design. In this context, we need a tutorial that covers the key aspects of elastic optical networks. This tutorial paper starts with a brief introduction of the elastic optical network and its unique characteristics. The paper then moves to the architecture of the elastic optical network and its operation principle. To complete the discussion of network architecture, this paper focuses on the different node architectures, and compares their performance in terms of scalability and flexibility. Thereafter, this paper reviews and classifies routing and spectrum allocation (RSA) approaches including their pros and cons. Furthermore, various aspects, namely, fragmentation, modulation, quality-of-transmission, traffic grooming, survivability, energy saving, and networking cost related to RSA, are presented. Finally, the paper explores the experimental demonstrations that have tested the functionality of the elastic optical network, and follows that with the research challenges and open issues posed by flexible networks.

547 citations

Journal ArticleDOI
TL;DR: The double resonance Raman process provides new assignments for the dispersive and nondispersive features observed in the Raman spectra of disordered graphite and carbon nanotubes, some features having been incorrectly assigned previously, or not assigned at all.
Abstract: The phonon dispersion relations of graphite can be probed over a wide range of the Brillouin zone by double resonance Raman spectroscopy. The double resonance Raman process provides us with new assignments for the dispersive and nondispersive features observed in the Raman spectra of disordered graphite and carbon nanotubes, some features having been incorrectly assigned previously, or not assigned at all.

543 citations

Journal ArticleDOI
TL;DR: This efficiency is the best performance to date for QDSCs and demonstrates that it is possible to obtain comparable or even better photovoltaic performance from green CIS QDs to the toxic cadmium and lead chalcogenides QDs.
Abstract: Semiconductor quantum dots (QDs) are extremely interesting materials for the development of photovoltaic devices, but currently the present the drawback is that the most efficient devices have been prepared with toxic heavy metals of Cd or Pb. Solar cells based on “green” QDs—totally free of Cd or Pb—present a modest efficiency of 2.52%. Herein we achieve effective surface passivation of the ternary CuInS2 (CIS) QDs that provides high photovoltaic quality core/shell CIS/ZnS (CIS-Z) QDs, leading to the development of high-efficiency green QD solar cells that surpass the performance of those based on the toxic cadmium and lead chalcogenides QDs. Using wide absorption range QDs, CIS-Z-based quantum dot sensitized solar cell (QDSC) configuration with high QD loading and with the benefit of the recombination reduction with type-I core/shell structure, we boost the power conversion efficiency of Cd- and Pb-free QDSC to a record of 7.04% (with certified efficiency of 6.66%) under AM 1.5G one sun irradiation. Thi...

540 citations


Authors

Showing all 8079 results

NameH-indexPapersCitations
Mildred S. Dresselhaus136762112525
Matthew Nguyen131129184346
Juan Bisquert10745046267
Dapeng Yu9474533613
Riichiro Saito9150248869
Shun-ichi Amari9049540383
Shigeru Nagase7661722099
Ingrid Verbauwhede7257521110
Satoshi Hasegawa6970822153
Yu Qiao6948429922
Yukio Tanaka6874419942
Zhijun Li6861414518
Iván Mora-Seró6723523229
Kazuo Tanaka6353527559
Da Xing6362414766
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202317
202258
2021644
2020815
2019908
2018837