ISHIWATA Shingo

Organization

Faculty of Engineering, Division of Intelligent Systems Engineering

Title

Associate Professor

Date of Birth

1958

Research Fields, Keywords

Nonlinear Physics, Soliton, Stochastic Resonance, Chemical Oscillation



Graduating School 【 display / non-display

  •  
    -
    1984

    Shizuoka University   Faculty of Science   Department of Physics   Graduated

Graduate School 【 display / non-display

  •  
    -
    1990

    Yokohama National University  Graduate School, Division of Engineering  Division of Materials Science and Chemical Engineering  Doctor Course  Completed

Degree 【 display / non-display

  • Theoretical and Experimental Study on Nonlinear Wave Propagation -  Yokohama National University

Academic Society Affiliations 【 display / non-display

  • 2015.07
     
     
     

    Acoustical Society of Japan

  • 2008.09
     
     
     

    The Robotics Society of Japan

  • 2003.09
     
     
     

    The Japanese Society for Mathematical Biology

  • 1986.03
     
     
     

    The Physical Society of Japan

Field of expertise (Grants-in-aid for Scientific Research classification) 【 display / non-display

  • Mathematical physics/Fundamental condensed matter physics

 

Research Career 【 display / non-display

  • Development of Control Systems based on Stochastic Resonance

    Project Year:  -   

Papers 【 display / non-display

  • Surface roughness detection based on stick-slip vibration of finger pad

    YAMASHITA Hisashi, ISHIWATA Shingo, TODA Motofumi

    The Proceedings of Mechanical Engineering Congress, Japan ( The Japan Society of Mechanical Engineers )  2018 ( 0 )   2018.09

    Joint Work

     View Summary

    <p>We propose a new model for tactile perception of the finger pad of a human based on the stick-slip vibration. It is known that a frequency of the stick-slip vibration to occur on the contact surface of two hard substances depends on the relative speed to each other, the load applied on the contact surface and the difference between the coefficients of static and kinetic friction. We suppose that similar dependence can be applied to the finger pad with a fingerprint. The validity of our model is shown from the both of an experiment and a numerical simulation. In the experiment, a rubber board with stripe and rectangular shapes is used instead of the fingerprint to get a relationship between the surface roughness and the relative speed, the load on the contact surface and the frequency of stick-slip vibration. As a result, it is shown that the stick-slip vibrations with the same frequency occur in a particular range of the relative speed V and the load W. In the numerical simulation, one-dimensional beam model corresponding to an elastic body with rectangular shapes is investigated in the case of acting only a horizontal shear force. It is shown that the frequency change of stick-slip vibration is remarkable in the range of a small value of <i>V/W</i>.</p>

    DOI CiNii

  • Experiment on route selection behavior of ant Camontus japonicus in foraging activity

    K. Kitamura, S. Ishiwata, O. Hirayama

      29 ( 3 )   192 - 205   2015.03  [Refereed]

    Joint Work

     View Summary

    We conducted an experiment on the route selection behavior of comontus japonicus ant. The feeding spot and the entrance of the ant's colony are set at the both ends of the planar area surrounded by the acrylic case. All ants's routes recorded by the video camera were analysed by a computer. The converged routes formation were confirmed in two cases in a series of experiments. The trajectory and the temporal evolution of velocity of each ant were obtained. The frequency distribution of walking velocity and the moving distance ratio were also examined.

  • A nonlinear modeling of auditory system

    Shingo ISHIWATA, Shingo JINNO

    Reports of RIMA Symposium   24AO-S3   83 - 88   2013.03  [Refereed]

    Joint Work

    DOI

  • Development of a Tip-fabrication Circuit for Scanning Tunneling Microscopes in Exercise Class in the Undergraduate Course

    Shingo Ishiwata, Atsushi Suzuki, Ken-ichi Shudo

    JAPANESE JOURNAL OF APPLIED PHYSICS EDUCATION   40 ( 1 )   37 - 41   2016.06  [Refereed]

    Joint Work

  • Detection of Negative Ions Produced by Charge Exchange on Oxide Surfaces

    Kyohei TASHIRO, Masako SHINDO, Shingo ISHIWATA, Ken-ichi SHUDO

    ( The Vaccum Society of Japan )  59 ( 4 )   83 - 86   2016.04  [Refereed]

    Joint Work

     View Summary

    The production of negative ions is one of the key issues in material processing and the neutral beam generation in nuclear fusion devices. Negative ions are known to be produced by the electric charge exchange during the ion scattering on material surfaces. We measured the production of negative ions using stable oxide materials with low work functions, instead of commonly used alkali metals. Negative ions, generated from barium oxide and calcium oxide surface during He+ scattering, are successfully detected by newly established detection system by means of pulse counting with wide dynamic range.

    DOI

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Grant-in-Aid for Scientific Research 【 display / non-display

  • Grant-in-Aid for challenging Exploratory Research

    Project Year: 2012.04  -  2014.03  Investigator(s): shingo Ishiwata

Presentations 【 display / non-display

  • A Model of Basilar Membrane Vibration in Hearing

    2017.09.24  

  • Active role of the hair bundle on a frog's hearing

    2017.09.24  

  • Nonlinear model of cochlea in the auditory system

    Shingo Ishiwata

    2015 Autumn Meeting Acoustical Society of Japan  2015.09.18   Acoustical Society of Japan

  • Nonlinear model of cochlea in the auditory system

    Shingo Ishiwata

    2013 Autumn Meeting of the Physical Society of Japan  2013.09.25  

  • A nonlenear modeling of auditory system

    RIAM Symposium  2012.11.01  

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