NASHIMA Shigeki

写真a

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Title

Lecturer

Laboratory location

Sugimoto Campus

Degree 【 display / non-display

  • Osaka University -  Ph.D.

  • Osaka University -  Ph.M.

Research Areas 【 display / non-display

Optical engineering, Photon science

Research Interests 【 display / non-display

Terahertz radiation, Terahertz enhancement cavity, Terahertz plasmonics, Terahertz metamaterial, Wire grid polarizer, Spectral sensing, Femtosecond laser

Research Career 【 display / non-display

  • Intense terahertz radiation using enhancement cavity and spectroscopic application

    (Collaboration in Japan) Project Year :

    2014.04
    -
    Today

    Keyword in research subject:  enhancement cavity, enhanced terahertz radiation

  • Development of high performance wire grid polarizer at terahertz frequencies

    (Individual) Project Year :

    2003.04
    -
    Today

    Keyword in research subject:  wire grid, terahertz wave, plasmonics

  • Development of Bio-sensor technology using metal mesh devices

    (Collaboration in Japan) Project Year :

    2011.04
    -
    Today

    Keyword in research subject:  metal mesh device, biosensing

  • Development of high intensity THz radiation system

    (Collaboration in Japan) Project Year :

    2003.04
    -
    Today

    Keyword in research subject:  terahertz radiation, enhanced cavity

  • Development of ultrabroadband terahertz time-domain spectroscopy system

    (Individual) Project Year :

    2003.04
    -
    Today

    Keyword in research subject:  terahertz radiation, time domain spectroscopy

Association Memberships 【 display / non-display

  • The Laser Society of Japan

  • The Japan Society of Infrared Science and Technology

Committee Memberships 【 display / non-display

  • 2009
    -
    Today

    The Japan Society of Infrared Science and Technology  

Current Career 【 display / non-display

  • Osaka City University   Graduate School of Engineering   Physical Electronics and Informatics Course   Lecturer  

Career 【 display / non-display

  • 2019.04
    -
    Today

    Aeronautical Safety College  

  • 2005.10
    -
    Today

    Osaka City University   Graduate School of Engineering   Lecturer

  • 2002.04
    -
    2005.09

    Osaka City University   Graduate School of Engineering   Research associate

Graduate School 【 display / non-display

  • 1999.04
    -
    2002.03

    Osaka University  Graduate School, Division of Engineering 

Graduating School 【 display / non-display

  • 1993.04
    -
    1997.03

    Osaka University   Faculty of Engineering  

 

Published Papers 【 display / non-display

  • Increasing Sensitivity of Label-Free Detection Using Porous-Polymer-Integrated Metallic Mesh

    Suzuki Tetsuhito, Ogawa Yuichi, Kondo Naoshi, Kondo Takashi, Kamba Seiji, Nashima Shigeki

    Japan Society for Laser Surgery and Medicine, Nippon Laser Igakkaishi  39 ( 4 ) 335 - 340 2019.01  [Refereed]  [Invited]

     View Summary

    <p>Metallic mesh is optical element which creates a localized electric field within and around openings in the mesh when incident light interacts with the openings. Using such a structure, samples do not need to be labelled and changes in the transmission property of the mesh when dielectric samples are present in the localized electric field, and it can be easily used as a sensor to detect biomolecules. For detection of minute biomolecules, such as allergens, sensitivity can be improved by actively immobilizing the sample within the localized electric field. To demonstrate the relationship between object immobilization and sensitivity, a metallic mesh prototype was developed with openings filled by an porous polymer, which has high transmission property in the Terahertz region: the light range used in this experiment. This porous polymer coating was modified to contain components which can bind a specific to biomolecule, such as streptavidin and ovalbumin. The metallic mesh demonstrated larger sensitivity when the target was immobilized on the porous polymer within and around openings of the metallic mesh.</p>

    DOI CiNii

  • Enhanced terahertz radiation from InAs in internal ring cavity

    Y. Mitsuyama, Y. Muraoka, K. Nakagawa, S. Nashima, Y. Takida, and H. Kumagai

    Journal of the Japan Society of Infrared Science and Technology  28 ( 1 ) 83 - 90 2018.08  [Refereed]

     View Summary

    We report on cavity-enhanced terahertz (THz) radiation from InAs in an internal ring cavity synchronized with 1-GHz-repetition rate femtosecond Ti:sapphire laser. We observed temporal waveforms of 7th-round-trip THz pulses using THz-time domain spectroscopy (THz-TDS) under the asynchronous cavity condition. We also found that maximum enhancement factor of the ring cavity was 23.8 at 0.293 THz.

  • Selection of a Single Isotope of Multiply Charged Xenon (Xe-A(z+), A=128-136, z=1-6) by Using a Bradbury-Nielsen Ion Gate

    Kitashoji Akihiro, Yoshikawa Taiki, Fujihara Akimasa, Kamamori Takaaki, Nashima Shigeki, Yatsuhashi Tomoyuki

    CHEMPHYSCHEM  18 ( 15 ) 2007 - 2011 2017.08  [Refereed]

    DOI

  • Metal Mesh Device Sensor Immobilized with a Trimethoxysilane-Containing Glycopolymer for Label-Free Detection of Proteins and Bacteria

    Seto Hirokazu, Kamba Seiji, Kondo Takashi, Hasegawa Makoto, Nashima Shigeki, Ehara Yoshinobu, Ogawa Yuichi, Hoshino Yu, Miura Yoshiko

    ACS APPLIED MATERIALS & INTERFACES  6 ( 15 ) 13234 - 13241 2014.08  [Refereed]

    DOI

  • Coherent time-domain detection of terahertz pulses generated from noncollinear phase-matched, picosecond terahertz parametric oscillator

    Tadokoro Yuzuru, Takida Yuma, Kumagai Hiroshi, Nashima Shigeki, Hangyo Masanori

    APPLIED PHYSICS EXPRESS  7 ( 2 )  2014.02  [Refereed]

    DOI

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Review Papers (Misc) 【 display / non-display

  • Optical properties of plasmonic crystal at terahertz frequencies and the advanced application

    Y. Ogawa

    IEEJ transactions on electronics, information and systems  133 ( 3 ) 484 - 489 2013.03

Conference Activities & Talks 【 display / non-display

  • Fabrication and characterization of free-standing double layered wire-grid polarizer using spacer

    The 77th JSAPp Autumn Meeting, 2016  2016.09 

  • Dip structure of metal mesh devices under the focused incident terahertz beam

    The 77th JSAP Autumn Meeting, 2016  2016.09 

  • Investigation on enhancement of terahertz waves using whispering gallery mode resonators

    The 77th JSAP Autumn Meeting, 2016  2016.09 

  • High extinction ratio double-layered free-standing wire-grid polarizer

    S. Nashima, T. Handa, and M. Hosoda

    The Second International Symposium on Frontiers in THz Technology (FTT2015)  2015.08 

  • Dip structure in metal mesh devices with squared- and trapezoid-shape holes

    T. Fujimura, Y. Ehara, S. Nashima, M. Hosoda, T. Kondo, S. Kamba, T. Suzuki, and Y. Ogawa

    The Second International Symposium on Frontiers in THz Technology (FTT2015)  2015.08 

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Other educational activity and Special note 【 display / non-display

  • Improvement of educational methods

    (2019)

  • Contribution to FD activities

    (2019)

  • Contribution to University-wide Cross-training program

    (2018)

  • Improvement of educational methods

    (2018)

  • Class teacher

    (2017)

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Theme of Possible Research Exchange 【 display / non-display

  • Application of the terahertz-time domain spectroscopy

    Research theme : We are investigating the performances of the terahertz-time domain spectroscopy system through the measurements of the complex optical constants of the semiconductors and dielectric materials.

    Request for collaborative research : The private sector, such as other institutions

    Type of research exchange : Technical consultation, Consignment study, Collaborative research

    Keyword : terahertz wave, spectroscopy, nondestructive inspection, tomography

     View Details

    Application fields / methods etc : It was reported that various materials were relatively transparent in the terahertz region.

    Core knowledge, technology, information etc : materials, optics, electromagnetics