J
Jun Kawamata
Researcher at Yamaguchi University
Publications - 176
Citations - 3663
Jun Kawamata is an academic researcher from Yamaguchi University. The author has contributed to research in topics: Langmuir–Blodgett film & Two-photon absorption. The author has an hindex of 31, co-authored 172 publications receiving 3243 citations. Previous affiliations of Jun Kawamata include Hokkaido University & National Institute of Advanced Industrial Science and Technology.
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Journal ArticleDOI
Room-temperature synthesis of manganese oxide monosheets.
Kazuya Kai,Yukihiro Yoshida,Hiroshi Kageyama,Gunzi Saito,Tetsuo Ishigaki,Yu Furukawa,Jun Kawamata +6 more
TL;DR: This work demonstrates the first single-step approach to directly access the MnO(2) monosheets, by the chemical oxidation of Mn(2+) ions in the presence of tetramethylammonium cations in an aqueous solution.
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Directionally tunable and mechanically deformable ferroelectric crystals from rotating polar globular ionic molecules
Jun Harada,Takafumi Shimojo,Hideaki Oyamaguchi,Hiroyuki Hasegawa,Yukihiro Takahashi,Koichiro Satomi,Yasutaka Suzuki,Jun Kawamata,Tamotsu Inabe +8 more
TL;DR: It is shown that a class of molecular compounds-known as plastic crystals-can exhibit ferroelectricity if the constituents are judiciously chosen from polar ionic molecules.
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Demonstration of Blue and Green GaN-Based Vertical-Cavity Surface-Emitting Lasers by Current Injection at Room Temperature
Daiji Kasahara,Daisuke Morita,Takao Kosugi,Kyosuke Nakagawa,Jun Kawamata,Yu Higuchi,Hiroaki Matsumura,Takashi Mukai +7 more
TL;DR: In this article, the authors realized room-temperature lasing of blue and green GaN-based vertical-cavity surface-emitting lasers (VCSELs) by current injection.
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Stimulating nicotinic receptors trigger multiple pathways attenuating cytotoxicity in models of Alzheimer's and Parkinson's diseases.
Jun Kawamata,Shun Shimohama +1 more
TL;DR: Evidence of nicotinic acetylcholine receptor (nAChR)-mediated protection against neurotoxicity induced by amyloid-β, glutamate, rotenone, and 6-hydroxydopamine is presented and the signal transduction involved in this mechanism is clarified.
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Apolipoprotein E polymorphism in Japanese patients with Alzheimer's disease or vascular dementia.
TL;DR: The raised frequency of the epsilon 4 allele in the patients with late onset sporadic Alzheimer's disease was of a lower magnitude than that in United States and Canadian studies, which may in part be due to a lower ePSilon 4 frequency in the normal Japanese population and reflect the lower morbidity from Alzheimer's Disease in Japan.