Search Results - "Ozawa, Nobuki"

Molecular-Level Elucidation of a Fracture Process in Slide-Ring Gels via Coarse-Grained Molecular Dynamics Simulations by Uehara, Shuichi, Wang, Yang, Ootani, Yusuke, Ozawa, Nobuki, Kubo, Momoji

“…Slide-ring (SR) gels with slidable cross-linked cyclic molecules exhibit considerably higher fracture toughness than conventional fixed cross-link (FC) gels…”
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Proposal of a new formation mechanism for hydrogenated diamond-like carbon transfer films: Hydrocarbon-emission-induced transfer by Wang, Yang, Xu, Jingxiang, Ootani, Yusuke, Ozawa, Nobuki, Adachi, Koshi, Kubo, Momoji

“…Diamond-like carbon (DLC) is one of the most promising solid lubricants for sliding against other materials, such as steel, alumina, and silicon carbide (SiC)…”
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Atom-by-Atom and Sheet-by-Sheet Chemical Mechanical Polishing of Diamond Assisted by OH Radicals: A Tight-Binding Quantum Chemical Molecular Dynamics Simulation Study by Kawaguchi, Kentaro, Wang, Yang, Xu, Jingxiang, Ootani, Yusuke, Higuchi, Yuji, Ozawa, Nobuki, Kubo, Momoji

“…Ultraflat and damage-free single-crystal diamond is a promising material for use in electronic devices such as field-effect transistors. Diamond surfaces are…”
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Effect of Tribochemical Reaction on Transfer-Film Formation by Poly(tetrafluoroethylene) by Onodera, Tasuku, Kawasaki, Kenji, Nakakawaji, Takayuki, Higuchi, Yuji, Ozawa, Nobuki, Kurihara, Kazue, Kubo, Momoji

“…Understanding tribochemical reaction mechanisms is necessary to develop a novel resin material that can easily slide on metallic parts. For this purpose, the…”
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Self-Formed Double Tribolayers Play Collaborative Roles in Achieving Superlow Friction in an Aqueous Environment by Ootani, Yusuke, Xu, Jingxiang, Takahashi, Naoki, Akagami, Kenta, Sakaki, Satoshi, Wang, Yang, Ozawa, Nobuki, Hatano, Takahiro, Adachi, Koshi, Kubo, Momoji

“…A mechanism to achieve superlow friction in water lubrication is still in the debate because friction is accompanied by complex mechanochemical processes at…”
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Three Tribolayers Self-Generated from SiC Individually Work for Reducing Friction in Different Contact Pressures by Ootani, Yusuke, Xu, Jingxiang, Nakamura, Fumiya, Kawaura, Masayuki, Uehara, Shuichi, Kanda, Koki, Wang, Yang, Ozawa, Nobuki, Adachi, Koshi, Kubo, Momoji

“…The low friction of silicon carbide (SiC)/water systems is understood to be the result of a self-forming silica-based tribolayer that is produced by…”
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Diamond-like carbon coating under oleic acid lubrication: Evidence for graphene oxide formation in superlow friction by De Barros Bouchet, Maria Isabel, Martin, Jean Michel, Avila, José, Kano, Makoto, Yoshida, Kentaro, Tsuruda, Takeshi, Bai, Shandan, Higuchi, Yuji, Ozawa, Nobuki, Kubo, Momoji, Asensio, Maria C.

“…The achievement of the superlubricity regime, with a friction coefficient below 0.01, is the Holy Grail of many tribological applications, with the potential…”
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Tribochemical reactions and graphitization of diamond-like carbon against alumina give volcano-type temperature dependence of friction coefficients: A tight-binding quantum chemical molecular dynamics simulation by Wang, Yang, Xu, Jingxiang, Zhang, Jing, Chen, Qian, Ootani, Yusuke, Higuchi, Yuji, Ozawa, Nobuki, Martin, Jean Michel, Adachi, Koshi, Kubo, Momoji

“…Diamond-like carbon (DLC) is a promising solid lubricant used as a protective coating to reduce friction against alumina. Friction properties of DLC/alumina…”
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Tight-Binding Quantum Chemical Molecular Dynamics Study on the Friction and Wear Processes of Diamond-Like Carbon Coatings: Effect of Tensile Stress by Wang, Yang, Xu, Jingxiang, Ootani, Yusuke, Bai, Shandan, Higuchi, Yuji, Ozawa, Nobuki, Adachi, Koshi, Martin, Jean Michel, Kubo, Momoji

“…Diamond-like carbon (DLC) coatings have attracted much attention as an excellent solid lubricant due to their low-friction properties. However, wear is still a…”
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Mechanisms of chemical-reaction-induced tensile deformation of an Fe/Ni/Cr alloy revealed by reactive atomistic simulations by Wang, Yang, Zhao, Haoyu, Liu, Chang, Ootani, Yusuke, Ozawa, Nobuki, Kubo, Momoji

“…High entropy alloys (HEAs) have demonstrated excellent potential in various applications owing to the unique properties. One of the most critical issues of…”
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Atomistic Mechanisms of Chemical Mechanical Polishing of a Cu Surface in Aqueous H2O2: Tight-Binding Quantum Chemical Molecular Dynamics Simulations by Kawaguchi, Kentaro, Ito, Hiroshi, Kuwahara, Takuya, Higuchi, Yuji, Ozawa, Nobuki, Kubo, Momoji

“…We applied our original chemical mechanical polishing (CMP) simulator based on the tight-binding quantum chemical molecular dynamics (TB-QCMD) method to…”
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Tribochemical Reaction Dynamics Simulation of Hydrogen on a Diamond-like Carbon Surface Based on Tight-Binding Quantum Chemical Molecular Dynamics by Hayashi, Kentaro, Tezuka, Kotoe, Ozawa, Nobuki, Shimazaki, Tomomi, Adachi, Koshi, Kubo, Momoji

“…Diamond-like carbon (DLC) has recently attracted much attention as a solid-state lubricant, because of its resistance to wear, low friction, and low abrasion…”
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Chemical Reaction Mechanism of Polytetrafluoroethylene on Aluminum Surface under Friction Condition by Onodera, Tasuku, Kawasaki, Kenji, Nakakawaji, Takayuki, Higuchi, Yuji, Ozawa, Nobuki, Kurihara, Kazue, Kubo, Momoji

“…To develop a novel shearing resin material, it is necessary to understand the mechanism of friction-induced chemistry during the friction process. For this…”
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Heterogeneous yielding mechanisms of body centered cubic iron for high resistance to chemical reaction-induced deterioration in supercritical water environments: A reactive molecular dynamics study by Chen, Qian, Zhang, Jing, Liu, Zhongmin, Wang, Yang, Ootani, Yusuke, Xu, Jingxiang, Ozawa, Nobuki, Kubo, Momoji

“…The atomic-scale yielding mechanisms of body centered cubic (BCC) iron in supercritical water have been an elusive problem that requires understanding the…”
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Transfer-Film Formation Mechanism of Polytetrafluoroethylene: A Computational Chemistry Approach by Onodera, Tasuku, Park, Minseok, Souma, Kenichi, Ozawa, Nobuki, Kubo, Momoji

“…A method based on computational chemistry is used to theoretically investigate the mechanism by which a transfer film, which strongly contributes to reducing…”
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Coarse-grained Molecular Dynamics Simulation of the Wear Mechanism of Cyclic Polymer Brushes by Liu, Zhongmin, Ootani, Yusuke, Uehara, Shuichi, Xu, Jingxiang, Wang, Yang, Miyazaki, Narumasa, Higuchi, Yuji, Ozawa, Nobuki, Kubo, Momoji

“…We investigated the effect of a cyclic chain structure on the wear resistance of polymer brushes via coarse-grained molecular dynamics simulations. Friction…”
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Molecular Dynamics Simulation of Ni Nanoparticles Sintering Process in Ni/YSZ Multi-Nanoparticle System by Xu, Jingxiang, Sakanoi, Ryota, Higuchi, Yuji, Ozawa, Nobuki, Sato, Kazuhisa, Hashida, Toshiyuki, Kubo, Momoji

“…We have developed a molecular dynamics (MD) simulation method to investigate the sintering of nickel nanoparticles in the nickel and yttria-stabilized zirconia…”
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Non‐Empirical Law for Nanoscale Atom‐by‐Atom Wear by Wang, Yang, Xu, Jingxiang, Ootani, Yusuke, Ozawa, Nobuki, Adachi, Koshi, Kubo, Momoji

“…Wear of contact materials results in energy loss and device failure. Conventionally, wear is described by empirical laws such as the Archard's law; however,…”
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Experimental and Quantum Chemical Approaches to Develop Highly Selective Nanocatalysts for CO2-free Power Circulation by Yamauchi, Miho, Ozawa, Nobuki, Kubo, Momoji

“…Renewable electricity must be utilized to usefully suppress the atmospheric CO2 concentration and slow the progression of global warming. We have thus proposed…”
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Chemical-Reaction-Induced deformation of Body-Centered cubic iron in supercritical water leading to high risk of cleavage Fracture: A reactive Molecular dynamics study by Chen, Qian, Xu, Jingxiang, Su, Yixin, Uehara, Shuichi, Bai, Shandan, Wang, Yang, Ootani, Yusuke, Ozawa, Nobuki, Kubo, Momoji

“…[Display omitted] To improve the reliability of BCC iron-based steels in supercritical water, it is crucial to understand the atomic-scale deterioration…”
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