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Near-field liquid phase probing method with dynamic optical phase detection for autonomous search for 1 nm particulate contamination

Research Project

Project/Area Number 21K18668
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 18:Mechanics of materials, production engineering, design engineering, and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Takahashi Satoru  東京大学, 大学院工学系研究科(工学部), 教授 (30283724)

Co-Investigator(Kenkyū-buntansha) 門屋 祥太郎  東京大学, 大学院工学系研究科(工学部), 助教 (60880234)
道畑 正岐  東京大学, 大学院工学系研究科(工学部), 准教授 (70588855)
Project Period (FY) 2021-07-09 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2022: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2021: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords異物検出 / ナノ欠陥 / ナノ異物 / 表面欠陥 / シリコンウエハ / 表面検査
Outline of Research at the Start

従来半導体プロセスにおいて現場適用されていた光学的散乱型計測法原理では物理的検出限界となっていた超平滑加工表面のナノ付着異物計測法について新光学システムの提案,開発を目指す.具体的には,基板上に滴下した揮発性不活性溶媒の液相界面とナノ異物との近接場における力学的・光学的相互作用を,並列情報処理性,現場適用性の高い遠隔場光学技術で取得することで,非破壊性,高速性を維持したまま,従来異物サイズ検出限界を打破可能な新概念近接場計測プローブ法の開発において,動的位相差検出が可能な新しい概念の光学システムの適用を提案し,1nm表面異物欠陥計測実現への可能性を,理論・実験の両面から検討する.

Outline of Final Research Achievements

We propose and develop a new optical system for the measurement of nanoparticle defects on ultra-smooth surfaces, which is physically limited by the light scattering detection principle conventionally applied in semiconductor processes.
Specifically, the mechanical and optical interactions in the near-field between the nanoparticle defects and the liquid-phase interface of volatile inert solvent droplets on the substrate are acquired using far-field optical system.
In this research project, the application of a new concept of high sensitive dynamic phase detection was proposed. In order to verify the feasibility of the proposed concept, we developed the fundamental experiment system, and verified its high sensitivity performance quantitatively.

Academic Significance and Societal Importance of the Research Achievements

今日,高性能半導体デバイスを高い信頼性をもって生産することは,持続的社会の実現にあたり,ますます重要となっている.半導体デバイスの高性能化のためには,配線パタンの微細化が必要となり,そのためには,半導体デバイスの基板となるベアSiウエハ表面上のナノスケールの異物管理が不可欠となっている.本研究成果は,従来困難だったベアSiウエハ表面上のナノスケール欠陥の検出可能性を示唆するものであり,大きな社会的意義を有する.

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (6 results)

All 2023 2022 2021

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (5 results) (of which Int'l Joint Research: 4 results,  Invited: 3 results)

  • [Journal Article] Smart optical measurement probe for autonomously detecting nano-defects on bare semiconductor wafer surface: highly sensitive observation system using phase-contrast microscopy with a spatial light modulator2022

    • Author(s)
      Y. Guan, S. Masui, S. Kadoya, M. Michihata and S. Takahashi
    • Journal Title

      J. Phys. Conf. Ser. 2368

      Volume: 1 Issue: 1 Pages: 12014-12014

    • DOI

      10.1088/1742-6596/2368/1/012014

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Super resolution optical measurement for functional microstructures beyond the diffraction limit2023

    • Author(s)
      Satoru Takahashi
    • Organizer
      15th International Symposium on Measurement Technology and Intelligent Instruments (ISMTII) 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Challenge of advanced optical technology beyond the diffraction limitfor nano/micro manufacturing2023

    • Author(s)
      Satoru Takahashi
    • Organizer
      The China-Japan International Conference on Ultra-Precision Machining Process (CJUMP) 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Smart optical measurement probe for autonomously detecting nano-defects on bare semiconductor wafer surface: highly sensitive observation system using phase-contrast microscopy with a spatial light modulator2022

    • Author(s)
      Yizhao Guan, Shuzo Masui, Shotaro Kadoya, Masaki Michihata and Satoru Takahashi
    • Organizer
      The 11th Global Conference on Materials Science and Engineering (CMSE 2022)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 自律的欠陥探索・分裂型マルチプローブによるナノ異物検出に関する研究(第11報) ー空間光位相変調による液相プローブ高感度検出ー2022

    • Author(s)
      管 一兆, 増井 周造, 門屋 祥太郎, 道畑 正岐, 高橋 哲
    • Organizer
      2022年度精密工学会春季大会学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] Challenge of nano optical technology beyond the diffraction limit for nano/micro manufacturing2021

    • Author(s)
      S. Takahashi
    • Organizer
      The 7th International Conference on Nanomanufacturing
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2021-07-13   Modified: 2025-01-30  

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