Search Results 1-20 of 1175

  • Molecular Shape Selectivity for Polycyclic Aromatic Compoundson a Poly(4-vinylpyridine) Stationary Phase in Liquid Chromatography

    NAKAGAMI Koki , SHIMIZU Keiichi , SUMIYA Ohjiro , UETA Ikuo , SAITO Yoshihiro

    … The trend can be interpreted as a dipole-dipole interaction between pyridyl groups in the P4VP ligands and the analyte. …



  • Modeling and Control Principle for Ferroelectric–Antiferroelectric Phase Transition  [in Japanese]

    Takae Kyohei , Tanaka Hajime

    <p>物質の電気的な性質,とくに誘電体の物性を制御する可能性について考えよう.強誘電秩序および反強誘電秩序を示す材料は広く知られており,電場による分極反転,さらには変形や熱と結びついた交差応答を示すために,実用的な観点からも大きな注目を集めている.これまで,材料における強誘電・反強誘電秩序の制御は,無機材料に関しては,原子置換,あるいは,エピタキシャル応力の印加により,また,有機材料に …

    Butsuri 76(3), 156-161, 2021


  • A Monocationic Zn(II) Acetate Complex of a Chiral Bisamidine Dioxolane Ligand, Naph-diPIM-dioxo-R, for the Asymmetric 1,3-Dipolar Cycloaddition of Tridentate α-Substituted α-Imino Esters and Acrylates to Multi-Substituted Prolines: Importance of an n-π* Interaction for High Enantioselectivity

    Kiran Indukuru Naga Chaithanya , Fujita Kazuki , Kobayashi Kazuki , Tanaka Shinji , Kitamura Masato

    … ii) the existence of the n orbital, which determines the position of the intermediary N,O-<i>cis</i>-Zn enolate (dipole) by an n-π* non-bonding attractive interaction between the oxygen atom in <b>L<i><sub>R</sub></i></b> … and the C=N moiety of the dipole; …

    Bulletin of the Chemical Society of Japan 94(1), 295-308, 2021


  • Volatile Gas Sensing through Terahertz Pipe Waveguide

    游 博文 , Ja-Yu LU , Borwen YOU , Jiun-You WANG , Sheng-Syong JHUO , Tun-Yao HUNG , Ching-Ping YU

    … Target vapors that naturally diffuse from a sample site into the pipe core can be detected based on strong interaction between the probe and analyte. … The investigation found that the sensitivity of the pipe-waveguide sensing scheme is dependent on the vapor absorption strength, which is strongly related to the molecular amount and properties including the dipole moment and mass of a gas molecule. …

    Sensors 20(21), 6268-6268, 2020-11-03


  • Separation of saccharides using fullerene-bonded silica monolithic columns via π interactions in liquid chromatography

    Kobayashi Hiroshi , Okada Kazuya , Tokuda Shinnosuke , Kanao Eisuke , Masuda Yusuke , Naito Toyohiro , Takaya Hikaru , Yan Mingdi , Kubo Takuya , Otsuka Koji

    … 2020-08-26.We report on a potential method to separate sugars by using the specific interaction between fullerenes and saccharides in liquid chromatography (LC). … In this case, it was assumed that the retention rates were determined by the difference of the dipole moment in each saccharide. …

    Scientific Reports (10), 2020-08-14


  • Infrared active surface modes found in thin films of perfluoroalkanes reveal the dipoledipole interaction and surface morphology

    Fukumi Aki , Shimoaka Takafumi , Shioya Nobutaka , Nagai Naoto , Hasegawa Takeshi

    … Infrared (IR) spectra of an organic thin film are mostly understood by considering the normal modes of a single molecule, if the dipoledipole (D–D) interaction is ignorable in the film. …

    The Journal of Chemical Physics 153(4), 2020-07-28


  • Chiral excitation of a single atom by a quantized single-photon pulse in a guided mode of a nanofiber

    Fam Le Kien , Síle Nic Chormaic , Thomas Busch

    … We study the interaction between a single two-level atom and a quantized single-photon probe pulse in a guided mode of a nanofiber. … We examine the situation of chiral interaction, where the atom has a dipole rotating in the meridional plane of the nanofiber and the probe pulse is quasilinearly polarized along the radial direction of the atom position in the fiber transverse plane. …

    Physical Review A 101(6), 063816, 2020-06-11


  • Transfer of orbital angular momentum of light to plasmonic excitations in metamaterials

    Arikawa T. , Hiraoka T. , Morimoto S. , Blanchard F. , Tani S. , Tanaka T. , Sakai K. , Kitajima H. , Sasaki K. , Tanaka K.

    光の軌道角運動量を擬似プラズモンに転写することに成功 --光渦と物質の相互作用に関する新発見--. 京都大学プレスリリース. 2020-06-15.

    Science Advances 6(24), 2020-06-10


  • Numerical Analysis of Generation of Sound, Aerodynamic Force, and Vortices Associated with Flapping Wing Motion  [in Japanese]

    青野 光 , 吉川 晃平 , 石川 仁 , Aono Hikaru , Kikkawa Kohei , Ishikawa Hitoshi

    第51回流体力学講演会/第37回航空宇宙数値シミュレーション技術シンポジウム (2019年7月1日-3日. 早稲田大学早稲田キャンパス国際会議場), 新宿区, 東京形態: カラー図版あり資料番号: AA1930011018レポート番号: JAXA-SP-19-007

    宇宙航空研究開発機構特別資料: 第51回流体力学講演会/第37回航空宇宙数値シミュレーション技術シンポジウム論文集 = JAXA Special Publication: Proceedings of the 51st Fluid Dynamics Conference / the 37th Aerospace Numerical Simulation Symposium (JAXA-SP-19-007), 201-205, 2020-02-04


  • Excitonic Coupling on a Heliobacterial Symmetrical Type-I Reaction Center: Comparison with Photosystem I

    Kitoh-Nishioka Hirotaka , Shigeta Yasuteru , Itoh Shigeru , Kimura Akihiro

    … The advanced combination of transition charge of electrostatic potential (TrESP) with the Poisson equation (Poisson–TrESP), applied for the first time to the excitonic coupling calculation, gave a reliable model in contrast to a model calculated by simple standard dipoledipole interaction approximation that was qualitatively valid for hRC but not for PSI. …

    The Journal of Physical Chemistry B 124(2), 389-403, 2020-01-16


  • Separation of halogenated benzenes enabled by investigation of halogen–π interactions with carbon materials

    Kanao Eisuke , Morinaga Takuya , Kubo Takuya , Naito Toyohiro , Matsumoto Takatoshi , Sano Tomoharu , Maki Hideshi , Yan Mingdi , Otsuka Koji

    … The halogen–π (X–π) interaction is an intermolecular interaction between the electron-poor region of bonded halogen atoms and aromatic rings. … We report an experimental evaluation of the halogen–π (X–π) interaction using liquid chromatography with carbon-material coated columns providing strong π interactions in the normal phase mode. … In addition, the strength of the X–π interaction increased in the order of F < …

    Chemical Science 11(2), 409-418, 2020-01-14


  • Enhanced orientation of 1,3,5-tris(1-phenyl-1H-benzimidazole-2-yl)benzene by light irradiation during its deposition evaluated by displacement current measurement

    TANAKA Yuya , TAZO Yuki , ISHII Hisao

    … Recently, several groups have reported that dipole-dipole interaction between polar molecules induces anti-parallel orientation which does not contribute to σ<sub>pol</sub>. … In other words, perturbation inducing the attenuation of the dipole interaction is needed to enhance σ<sub>pol</sub>. …

    IEICE Transactions on Electronics, 2020


  • Characterization of Neel and Brownian relaxations by applying pulse field  [in Japanese]

    大多 哲史 , 竹村 泰司

    電気学会研究会資料. MAG = The papers of technical meeting on magnetics, IEE Japan 2019(197-208), 29-33, 2019-12-19

  • Waveguide-induced dispersion interaction between two two-level atoms with orthogonal in-transverse-plane dipoles

    Fam Le Kien , Lewis Ruks , Thomas Busch

    … We study the dispersion interaction between two ground-state two-level atoms near a cylindrical vacuum-clad optical waveguide. … We focus on the case where the electric-dipole matrix-element vectors of the atoms are perpendicular to each other and to the interatomic axis. … When these atoms are in free space, the dispersion interaction between them vanishes. …

    Applied Physics B-Lasers and Optics 125(11), 205, 2019-10-16


  • Roadmap on STIRAP applications

    Klaas Bergmann , Hanns-Christoph Nägerl , Cristian Panda , Gerald Gabrielse , Eduard Miloglyadov , Martin Quack , Georg Seyfang , Gunther Wichmann , Silke Ospelkaus , Axel Kuhn , Stefano Longhi , Alexander Szameit , Philipp Pirro , Burkard Hillebrands , Xue-Feng Zhu , Jie Zhu , Michael Drewsen , Winfried K Hensinger , Sebastian Weidt , Thomas Halfmann , Hai-Lin Wang , Gheorghe Sorin Paraoanu , Nikolay V Vitanov , Jordi Mompart , Thomas Busch , Timothy J Barnum , David D Grimes , Robert W Field , Mark G Raizen , Edvardas Narevicius , Marcis Auzinsh , Dmitry Budker , Adriana Pálffy , Christoph H Keitel

    … A particularly interesting feature is the fact that the coupling between the initial and the final quantum states is via an intermediate state, even though the lifetime of the latter can be much shorter than the interaction time with the laser radiation. …

    Journal of Physics B: Atomic, Molecular and Optical Physics 52(20), 202001, 2019-09-27


  • Implementation of hyperfine coupling in all-electron mixed basis approach

    Terada Hiroyuki , Kanno Shota , Ohno Kaoru

    … order to accurately evaluate hyperfine interaction (HFI) (both the isotropic, Fermi contact term and the anisotropic, dipole interaction term) of spin-polarized atoms and molecules, we newly implement the cubic harmonics routines for calculating HFI in the all-electron mixed basis code, TOMBO, in which both plane waves (PWs) and atomic orbitals (AOs) are used as basis functions, and AOs are restricted inside the non-overlapping atomic spheres and composed of the numerical radial function on a …

    Journal of Physics B: Atomic, Molecular and Optical Physics 52(16), 160001, 2019-07-24


  • Effects of size and anisotropy of magnetic nanoparticles associated with dynamics of easy axis for magnetic particle imaging

    Ota Satoshi , Matsugi Yuki , Nakamura Takeru , Takeda Ryoji , Takemura Yasushi , Kato Ichiro , Nohara Satoshi , Sasayama Teruyoshi , Yoshida Takashi , Enpuku Keiji

    … In the numerical simulations, core diameters and anisotropy constants were considered as the effective values, such as the increase in anisotropy in the chainlike structure due to dipole interaction. …

    Journal of Magnetism and Magnetic Materials (474), 311-318, 2019-03-15


  • Negative fluorescence anisotropy of phosphole oxide-based dyes in nematic liquid crystals  [in Japanese]

    Ohzono Takuya , Yatabe Tetsuo , Wang Chenguang , Fukazzawa Aiko , Yamaguchi Shigehiro

    … <p>Here, we unveil fluorescence anisotropies of a series of phosphole oxide-based dyes with an elongated -conjugated system, on which the transition dipole moment lies, in nematic liquid crystals. … We observe that, as the number, size, and rigidity of substituents protruding from the pi-conjugated plane increase, the transition dipole moment tends to tilt away from the nematic director over the magic angle, ~54.7°, showing conspicuous negative fluorescence anisotropy. …

    Proceedings of Japanese Liquid Crystal Society Annual meeting 2019(0), 2B09, 2019


  • Replica exchange molecular dynamics simulation study on the mechanism of desiccation-induced structuralization of an intrinsically disordered peptide as a model of LEA proteins

    Nishimoto Tatsushi , Takahashi Yuta , Miyama Shohei , Furuta Tadaomi , Sakurai Minoru

    … In the latter case, we tested different types of arrangement: 1) the dipole moments of the two helices were parallel or anti-parallel and 2) due to the amphiphilic nature of the α-helix of the 11-mer motif, two types of the side-to-side contact were tested: hydrophilic-hydrophilic facing or hydrophobic-hydrophobic facing. …

    Biophysics and Physicobiology 16(0), 196-204, 2019


  • Dynamic Behavior of Two Ag Nanowires Dispersed in Magnetic Fluid

    IWAMOTO Yuhiro , YOSHIOKA Atsushi , IDO Yasushi , CUYA Jhon , JEYADEVAN Balachandran , YAMASAKI Haruhiko , YAMAGUCHI Hiroshi

    … With assuming that single magnetic moment places at the center of Ag nanowires, the magnetic dipole interaction force, which is the attraction force, acts on the Ag nanowires, and the wires contact each other with taking a long time.</p> …

    Journal of the Japan Society of Applied Electromagnetics and Mechanics 27(1), 128-133, 2019


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