Search Results 1-20 of 2122

  • Accuracy Verification for the Inhomogeneous Wave Equation Discretized by a Finite Difference Scheme on Homogeneous Cartesian Grid  [in Japanese]

    池田 友明 , IKEDA Tomoaki

    流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム2020オンライン (2020年9月28日-30日. 日本航空宇宙学会 : 宇宙航空研究開発機構(JAXA)オンライン会議)形態: カラー図版あり資料番号: AA2030013008レポート番号: JAXA-SP-20-008

    宇宙航空研究開発機構特別資料: 流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム2020オンライン論文集 = JAXA Special Publication: Proceedings of Fluid Dynamics Conference / Aerospace Numerical Simulation Symposium 2020 Online (JAXA-SP-20-008), 53-57, 2021-02-08


  • Highly Efficient Electric-field Control of Rashba Spin-orbit Interaction in Semiconductor Nanowire Field-effect Transistors  [in Japanese]

    TAKASE Keiko , TATENO Kouta , SASAKI Satoshi

    … <p>Spin-orbit interaction, which couples electron spin to its momentum, is a relativistic effect that appears in solid-states physics. … Consequently, the gate tunability of Rashba spin-orbit interaction is more than ten times higher than those reported for III-V semiconductor FETs, including nanowire FETs with a standard back-gate geometry and Schottky FETs fabricated from two-dimensional quantum wells, all of which were studied as candidates of a spin FET. …

    Vacuum and Surface Science 64(3), 118-125, 2021


  • Advanced Formulation Design for Topical Creams Assisted with Vibrational Spectroscopic Imaging

    Ozawa Yosuke , Watanabe Yutaro , Ando Daisuke , Koide Tatsuo , Fukami Toshiro

    … In this study, we applied microscopic attenuated total reflection (ATR)-IR and confocal Raman microscopy to elucidate microscopic structure of creams and for the formulation design in the development of semi-solid drug products. … Whereas, confocal Raman imaging allowed to visualize the distribution of the components in depth direction as well as two-dimensional plane. …

    Chemical and Pharmaceutical Bulletin 69(3), 271-277, 2021


  • Methods of graphic representation for joint sinus cone based on map projection system: appropriateness of Lambert azimuthal equal-area projection for shoulder joint sinus  [in Japanese]


    <p> 多軸関節の可動域の表現方法として、joint sinus cone(または単にsinus)と呼ばれる方法がある。これは関節を構成する体節の長軸の運動範囲であり、この範囲は球面上の領域に対応する。sinusを平面の図として表現する場合には、大きさ・位置・形状などの特性に歪みが生じるという問題がある。本研究では、この問題を地図投影法の概念を用いて整理し、sinusを平面で表示する方 …

    Rehabilitation Engineering 36(1), 49-56, 2021


  • RATIONALIZATION OF THE DESIGN AND CONSTRUCTION OF 3D COMPLEX SHAPE RC ARCHITECTURE PRODUCTION:Focusing on who transfer the information of design and construction to 3D model  [in Japanese]

    SHINOHARA Ren , GONDO Tomoyuki , KANISAWA Hirotake , HAYASHI Sei , HOSAKA Itaru

    … <p> In recent times, the design of three-dimensional (3D) complex shape architectures has become much easier since the advent of 3D-CAD or BIM software. … The results are outlined below.</p><p> First, from the investigation of two architectural magazines, "Shinkenchiku" and "Kenchiku–Gijutsu" from January 2000 to July 2019, the authors collected 265 3D complex shape RC architectures and clarified their trends. … two-dimensional (2D) drawings; …

    Journal of Architecture and Planning (Transactions of AIJ) (773), 1525-1534, 2020-07


  • Lattice Boltzmann method for simulation of wettable particles at a fluid-fluid interface under gravity

    Mino Yasushi , Shinto Hiroyuki

    … The proposed technique combines the improved smoothed profile-lattice Boltzmann method (iSP-LBM) for the treatment of moving solid-fluid boundaries and the free-energy LBM for the description of isodensity immiscible two-phase flows. …

    Physical Review E 101(3), 033304, 2020-03-13


  • Atomic Force Microscopy Imaging of Crystalline Sucrose in Alcohols

    Teduka Yuya , Sasahara Akira , Onishi Hiroshi

    … Imaging nanometer- or molecule-scale topography has been achieved by dynamic atomic force microscopy (AFM) when a solid object of interest is damaged by vacuum exposure or electron irradiation. … Furthermore, two-dimensional distribution of liquid-induced force pushing or pulling the tip was mapped on planes perpendicular to the hexanol-sucrose interface. …

    ACS Omega 5(6), 2569-2574, 2020-02-18


  • Flow Characteristics of Supersonic Under-expanded Jet Reattaching to Side Wall  [in Japanese]

    OHMURA Tetsuji , SHAKOUCHI Toshihiko , FUKUSHIMA Shunsuke , TSUJIMOTO Koichi

    … <p>When a jet is near a solid wall, it deflects and flows while being attached to the wall owing to the Coanda effect. … The flow characteristics of two-dimensional (2D) Coanda-reattached jet flows have been elucidated considerably owing to the development of fluidics. …

    The Proceedings of Mechanical Engineering Congress, Japan 2020(0), S05105, 2020


  • A study of levitation principle in ultrasonic levitation  [in Japanese]

    TAKAHASHI Mizuki , TSUKUDA Kazuma , UTSUNO Hideo

    … In this technology, levitated objects do not have any material restrictions, and not only a solid substance but also liquid substance can be levitated. … Furthermore, we calculated two-dimensional sound pressure distribution in the sound field to determine where levitated objects will be trapped.</p> …

    The Proceedings of the Dynamics & Design Conference 2020(0), 152, 2020


  • Molecular mechanisms of lubrication  [in Japanese]

    Bennewitz Roland , Kramer Gunther , Kim Chan , Kim Kwang-Seop

    … We will report on two different material system, which exhibit fascinating lubrication properties at the nanometer scale. … Graphene is the two-dimensional building block of graphite, a well-known solid lubricant. …

    Abstract book of Annual Meeting of the Japan Society of Vacuum and Surface Science 2020(0), 40, 2020


  • Development of laser time-angle-resolved photoemission system using two-dimensional time-of-flight analyzer  [in Japanese]

    Sato Yusuke , Kurihara Takayuki , Itatani Jiro , Matsuda Iwao

    <p>角度分解光電子分光(ARPES)は物質中の電子のバンド構造を決定する方法として広く用いられている。ARPESの光源としてレーザーを利用し、また検出器として飛行時間型のアナライザを使用すると、高分解能・高収率の測定が実現できると期待される。現在我々は、二次元飛行時間型アナライザを用いた時間分解レーザーARPESシステムを開発している。本講演では同システムの開発状況と今後の展望につい …

    Abstract book of Annual Meeting of the Japan Society of Vacuum and Surface Science 2020(0), 70, 2020


  • Adsorption and reactivity of CO<sub>2</sub> on hydrogen boride sheets  [in Japanese]

    Goto Taiga , Ito Shin-ichi , Kondo Takahiro

    <p>我々はこれまでに,ホウ化水素シート(HB)と名付けた新たな二次元物質を合成できることを明らかにしてきた.本研究ではHBが水素を含有していることに着目し,CO<sub>2</sub>を水素化する触媒への応用の可能性を調べることを目的とした.講演では加熱処理をしたHBに発現するCO<sub>2</sub>吸着能について,CO<su …

    Abstract book of Annual Meeting of the Japan Society of Vacuum and Surface Science 2020(0), 260, 2020


  • ARPES study of twist-angle dependent electronic states in twisted bilayer graphene  [in Japanese]

    Iimori Takushi , Nakatsuji Kan , Kitamura Miho , Horiba Koji , Mase Kazuhiko , Tanaka Satoru , Komori Fumio , Imamura Hitoshi , Visikovskiy Anton , Uotani Ryosuke , Kajiwara Takashi , Miyamachi Toshio , Hattori Takuma , Harasawa Ayumi , Yaji Koichiro

    <p>ツイスト2層グラフェンは、相互に面内回転する2つのグラフェンシートを積み重ねたものであり、電子状態はツイスト角度に依存する。ARPESによる2次元マッピングの解析により、ツイスト角が減少するにつれてディラック速度が異方的に減少すること、および、複数の小さなバンドギャップの存在が分かった。これらのバンド構造は計算でも再現されており、数度ツイストグラフェンの電子状態の詳細が明らかとな …

    Abstract book of Annual Meeting of the Japan Society of Vacuum and Surface Science 2020(0), 132, 2020


  • Formation of self-assembled thin film of fibroins on molybdenum disulfide  [in Japanese]

    Takizawa Rio , Nakamura Yoshiki , Motai Kazunori , Tsukiiwa Mirano , Hayamizu Yuhei

    <p>2次元ナノ材料を用いたバイオセンサ応用には,標的物質に結合する生体分子を固体表面に固定すると同時に、標的分子以外の生体分子に対して反応しない表面を作ることが重要である。本研究では、生体親和性のある分子足場として絹糸フィブロインを使用することを目指し、フィブロインのMoS2表面における自己組織化を評価した。AFMの観察結果から、フィブロインは厚さ1.5nm程度の自己組織化膜を形成す …

    Abstract book of Annual Meeting of the Japan Society of Vacuum and Surface Science 2020(0), 122, 2020


  • Numerical Modeling of the Inclusion Behavior during AC Flash Butt Welding

    Siddiqui Md Irfanul Haque , Geleta Dereje Degefa , Bae Gyuyeol , Lee Joonho

    … Additionally, the concentration of sulfur may induce Marangoni convection in the weld pool, which possibly affects the pushing and engulfment of inclusions by the solid at the solid-liquid interface. … In the present work, a two-dimensional numerical model based on Computational Fluid Dynamics (CFD) has been developed to investigate the behavior of alumina inclusions during the AC flash welding of a thin SPFH590 steel plate. …

    ISIJ International 60(11), 2503-2511, 2020


  • Theoretical analyses of interaction forces acting on a sphere from a solid surface with two-dimensional periodic material distribution  [in Japanese]

    BESSHO Keisuke , OTANI Toshiki , ISHIKAWA Takumi , MATSUOKA Hiroshige

    The Proceedings of Conference of Chugoku-Shikoku Branch 2020.58(0), 12a1, 2020


  • Synthesis and ionic conductivity of a high-entropy layered hydroxide

    MIURA Akira , ISHIYAMA Sho , KUBO Daiju , ROSERO-NAVARRO Nataly Carolina , TADANAGA Kiyoharu

    … were homogeneously distributed on two dimensions sheets, was synthesized for the first time. … This finding presents tremendous opportunities for emerging new two-dimensional high-entropy materials.</p> …

    Journal of the Ceramic Society of Japan 128(7), 336-339, 2020


  • Controlling Interfacial Properties Using Mixed Adsorbed Film Formation of Surfactant and Oil  [in Japanese]

    MATSUBARA Hiroki

    <p>界面活性剤の吸着膜には,三次元の気体,液体,固体に相当する状態として,気体膜,(液体)膨張膜,(液体)凝縮膜が存在するが,(1)吸着密度が高くなるにつれ,親水基間の静電反発,あるいは水和反発力が大きくなる,(2)溶液中でミセル形成が起こると吸着量がほぼ一定になるなどの要因があり,(液体)凝縮膜は,溶解度が低く,親水基の小さい長鎖アルコールなど,限られた物質でしか観測されない。本稿 …

    Journal of the Japan Society of Colour Material 93(3), 73-77, 2020


  • Implement the particle finite element method in ABAQUS

    Li Haichao , Zhang Sheng

    … <p>We implement the particle finite element method (PFEM) in the general numerical simulation framework ABAQUS to investigate the quasi-static collapse of two-dimensional granular columns and landslides. … As a recently proposed continuum approach, the PFEM inherits both the solid mathematical foundation of the particle of the traditional finite element method and the flexibility of particle methods in simulating ultra-large deformation problems. …

    Japanese Geotechnical Society Special Publication 8(3), 70-75, 2020


  • Creation of new 2D materials using boron  [in Japanese]

    KONDO Takahiro

    <p>我々は最近,二ホウ化マグネシウム(MgB<sub>2</sub>)に含まれるマグネシウムの正イオンを水素の正イオン(プロトン)と交換することにより,これまでにない水素とホウ素のみで構成される新しい2次元物質「ホウ化水素(HB)シート」が室温・大気圧下という温和な条件で生成することを見いだした.この物質は150℃以上の加熱や紫外線照射で自身の分解生成物として …

    Oyo Buturi 89(3), 152-156, 2020


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