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Theoretical search for the optimum condition of super-resolution effects with the formation of nanoscale optical windows

Research Project

Project/Area Number 15K04702
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Optical engineering, Photon science
Research InstitutionIshikawa National College of Technology

Principal Investigator

Sano Haruyuki  石川工業高等専門学校, 一般教育科, 教授 (80250843)

Co-Investigator(Kenkyū-buntansha) 桑原 正史  国立研究開発法人産業技術総合研究所, エレクトロニクス・製造領域, 上級主任研究員 (60356954)
Research Collaborator MIZUTANI Goro  
Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords光メモリ / 超解像 / シミュレーション / 第一原理計算 / 誘電率 / 相変化 / アンチモナイド / 計算物理 / シミュレーション工学 / 光物性 / 光記録
Outline of Final Research Achievements

Ab initio calculations of Sb2Te3, which is used as the best candidate material for the active layer in a super-resolution optical disc, showed that the optical absorption at the photon energy of 3.06 eV decreases due to the melting. This decrease of the optical absorption was suggested to result in the decrease of the optical transitions below 2 eV. By comparison with InSb where optical absorption increase with melting, the differences between the two materials were found to result from the difference of electronic states around the Fermi level in the crystalline state.
In order to reproduce the super-resolution phenomenon in an optical disc, we developed the multi-physics simulation system that takes into account the transient phenomenon. The difference in the super-resolution mechanisms between Sb2Te3 and InSb was clarified.

Academic Significance and Societal Importance of the Research Achievements

アーカイブ用記録メディアとして必要不可欠な光ディスクは、さらなる大容量化のための研究開発が進められている。高密度記録のための本命技術として超解像技術(機能層材料がレーザー光で解けることによる光学的性質の変化を利用)があるが、超解像現象の発現メカニズムや機能層材料の性質は良く分かっていなかった。本研究では、有望な機能層材料であるInSbとSb2Te3を対象に、融解による光学的性質の変化のメカニズムを明らかにした。また、光ディスク中での光の伝わり方や熱の伝わり方をシミュレーションすることによって、超解像現象を「見える化」することに成功し、超解像メカニズムを明らかにした。

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (11 results)

All 2018 2017 2016 2015 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Acknowledgement Compliant: 2 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results) Remarks (2 results)

  • [Journal Article] First principles study of the electronic and optical properties of crystalline and liquid Sb2Te3: Phase-transition-induced changes in optical properties2018

    • Author(s)
      H. Sano, M. Kuwahara, G. Mizutani
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 57 Issue: 9S1 Pages: 09SD01-09SD01

    • DOI

      10.7567/jjap.57.09sd01

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Response function of super-resolution readout of an optical disc studied by coupled electromagnetic-thermal simulation2016

    • Author(s)
      H. Sano, T. Shima, M. Kuwahara, Y. Fujita, M. Uchiyama, and Y. Aono
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 55 Issue: 9S Pages: 09SB02-09SB02

    • DOI

      10.7567/jjap.55.09sb02

    • NAID

      210000147098

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Ab initio calculations of the optical properties of crystalline and liquid InSb2015

    • Author(s)
      H. Sano, G. Mizutani
    • Journal Title

      AIP Advances

      Volume: 5 Issue: 11

    • DOI

      10.1063/1.4935438

    • NAID

      120005682592

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] アンチモナイドを機能層とする光ディスクの超解像再生メカニズムの解析2018

    • Author(s)
      佐野陽之、桑原正史
    • Organizer
      応用物理学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] First principles study of optical properties change of Sb2Te3 due to the melting2017

    • Author(s)
      H. Sano, M. Kuwahara, G. Mizutani
    • Organizer
      International Symposium on Imaging, Sensing, and Optical Memory 2017 (ISOM’17)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 融解によるSb2Te3の光学特性変化の第一原理計算2017

    • Author(s)
      佐野陽之、桑原正史、水谷五郎
    • Organizer
      応用物理学会
    • Related Report
      2017 Research-status Report
  • [Presentation] b initio calculation of optical properties change of antimonide due to the melting2017

    • Author(s)
      H. Sano, M. Kuwahara, G. Mizutani
    • Organizer
      第29回相変化研究会シンポジウム(PCOS2017)
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Study on response function of super-resolution readout of an optical disc by multi-physics simulation2015

    • Author(s)
      H. Sano, T. Shima, M. Kuwahara, Y. Fujita, M. Uchiyama, and Y. Aono
    • Organizer
      International Symposium on Optical Memory 2015 (ISOM'15)
    • Place of Presentation
      富山国際会議場(富山県・富山市)
    • Year and Date
      2015-10-04
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] 融解によるInSbの光学応答変化の第一原理計算2015

    • Author(s)
      佐野陽之、水谷五郎
    • Organizer
      応用物理学会
    • Place of Presentation
      名古屋国際会議場(愛知県・名古屋市)
    • Year and Date
      2015-09-13
    • Related Report
      2015 Research-status Report
  • [Remarks] 国立高専研究情報ポータル

    • URL

      https://research.kosen-k.go.jp/researcher-list/read0142223

    • Related Report
      2018 Annual Research Report 2017 Research-status Report
  • [Remarks] 国立高専研究情報ポータル

    • URL

      http://research.kosen-k.go.jp/researcher-list/read0142223

    • Related Report
      2016 Research-status Report

URL: 

Published: 2015-04-16   Modified: 2020-03-30  

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