Y
Yuki Sakai
Researcher at Tokyo Institute of Technology
Publications - 65
Citations - 918
Yuki Sakai is an academic researcher from Tokyo Institute of Technology. The author has contributed to research in topics: Perovskite (structure) & Negative thermal expansion. The author has an hindex of 13, co-authored 53 publications receiving 672 citations. Previous affiliations of Yuki Sakai include University of California, Berkeley & University of Texas at Austin.
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Journal ArticleDOI
Atomically precise graphene nanoribbon heterojunctions from a single molecular precursor
Giang D. Nguyen,Hsin-Zon Tsai,Arash A. Omrani,Tomas Marangoni,Meng Wu,Meng Wu,Daniel J. Rizzo,Griffin Rodgers,Ryan R. Cloke,Rebecca A. Durr,Yuki Sakai,Franklin Liou,Andrew S. Aikawa,James R. Chelikowsky,Steven G. Louie,Steven G. Louie,Felix R. Fischer,Felix R. Fischer,Michael F. Crommie,Michael F. Crommie +19 more
TL;DR: The fabrication and electronic characterization of atomically precise GNR heterojunctions prepared through late-stage functionalization of chevron GNRs obtained from a single precursor are reported, revealing that band alignment across the heterojunction interface yields a type II heteroj junction, in agreement with first-principles calculations.
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Colossal negative thermal expansion in reduced layered ruthenate
TL;DR: The discovery of giant NTE for reduced layered ruthenate is reported, a value twice as large as the largest volume change reported to date in dilatometry, and the highly anisotropic thermal expansion of the crystal grains might underlie giant bulk NTE via microstructural effects consuming open spaces in the sintered body on heating.
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Colossal Negative Thermal Expansion in Electron-Doped PbVO3 Perovskites
TL;DR: The pronounced NTE in the sintered body should be attributed to an anisotropic lattice parameter change.
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Electronic structure and stability of layered superlattice composed of graphene and boron nitride monolayer
TL;DR: In this paper, the authors studied superlattices with alternate stacking of graphene and boron nitride monolayers and proposed several candidate stacking sequences and optimized their geometries based on the density functional theory.
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Calculations of Complete 4f n and 4f n-1 5d 1 Energy Level Schemes of Free Trivalent Rare-Earth Ions
Kazuyoshi Ogasawara,Shinta Watanabe,Yuki Sakai,Hiroaki Toyoshima,Takugo Ishii,Mikhail G. Brik,Isao Tanaka +6 more
TL;DR: In this paper, a semi-empirical Hamiltonian was used for the calculation of 4fn configuration while a fully relativistic first-principles many-electron method was used including 4fn-1 5d1 configuration.