閻 紀旺 (ヤン ジワン)

Yan, Jiwang

写真a

所属(所属キャンパス)

理工学部 機械工学科 (矢上)

職名

教授

HP

外部リンク

総合紹介 【 表示 / 非表示

  • 高付加価値型ものづくりを実現するための、マイクロ・ナノ領域での材料除去・変形および物性制御に基づく高精度・高効率・省エネ・省資源の加工技術の研究開発に取り組んでいる。特に超精密機械加工、マイクロ・ナノ構造形成、レーザ加工・欠陥修復などを中心に新技術の提案ならびにその原理の解明を進めている。

経歴 【 表示 / 非表示

  • 2000年04月
    -
    2001年09月

    東北大学工学研究科助手

  • 2001年10月
    -
    2005年03月

    北見工業大学助教授

  • 2005年04月
    -
    2007年03月

    東北大学工学研究科助教授

  • 2007年04月
    -
    2012年03月

    東北大学工学研究科准教授

  • 2012年04月
    -
    継続中

    慶應義塾大学理工学部教授

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学歴 【 表示 / 非表示

  • 1991年07月

    吉林大学, 工学部, 機械工学科

    大学, 卒業

  • 1994年03月

    吉林大学, 工学研究科, 機械工学専攻

    大学院, 修了, 修士

  • 1996年01月

    清華大学, 工学研究科, 精密機械学専攻

    大学院, 退学, 博士

  • 2000年03月

    東北大学, 工学研究科, 機械電子工学専攻

    大学院, 修了, 博士

学位 【 表示 / 非表示

  • 博士(工学), 東北大学, 課程, 2000年03月

 

研究分野 【 表示 / 非表示

  • ものづくり技術(機械・電気電子・化学工学) / 加工学、生産工学 (精密工学・機械加工学)

  • ナノテク・材料 / 材料加工、組織制御 (材料加工・処理)

  • ナノテク・材料 / ナノマイクロシステム (マイクロ・ナノデバイス)

  • ナノテク・材料 / 複合材料、界面 (応用物性・結晶工学)

研究キーワード 【 表示 / 非表示

  • 超精密加工

  • マイクロ・ナノ加工

  • レーザプロセッシング

  • 電気加工

  • ナノメカニクス

 

著書 【 表示 / 非表示

  • Ultraprecision Machining and Metrology

    J. Yan, CRC Press, 2025年09月,  ページ数: 352

    担当範囲: 1-352

     概要を見る

    This comprehensive introduction to ultraprecision machining and metrology provides an essential foundation for students and engineers, offering an in-depth analysis of key methods, technologies, and practical applications. Ultraprecision machining is a critical enabling technology for producing high-value mechanical, optical, optoelectronic, and biomedical components with complex geometries and extreme precision. This book delivers a structured exploration of ultraprecision machining and metrology, covering essential topics such as system configuration, tooling, machining mechanism modeling, and surface characterization. Dedicated chapters on surface and subsurface metrology, as well as the machinability of both ductile and brittle materials, make it an indispensable resource for understanding machine design, manufacturing processes, and related materials science. Ideal for students and researchers, this book serves as a vital reference for those working in precision machining, MEMS, advanced manufacturing, and precision metrology.

  • Micro and nanoscale laser processing of hard brittle materials

    J. Yan and N. Takayama, Elsevier B.V., 2019年11月,  ページ数: 242

    担当範囲: 1-242

  • Micro and Nano Fabrication Technology

    J. Yan (ed.), Springer Nature Singapore Pte Ltd., 2018年05月

    担当範囲: 1-959

  • Comprehensive Materials Processing: Volume 1-13, Second edition

    Huang W., J. Yan , 2024年01月,  ページ数: 180-204

    担当範囲: Chapter 10.08 Ultra-precision grooving technologies

     概要を見る

    Fabricating microgrooves on part surfaces is a way to provide advanced functionality of the parts, which has recently increased in several fields, such as biotechnology, optics, and aerospace. Considerable progress has been achieved in groove-cutting technology with the equipment development, process optimization and mechanisms understanding. This chapter reviews the ultraprecision cutting technologies for manufacturing of microgrooves and microgroove-based microstructures on various materials. Major cutting methods and their principles/mechanisms for microgrooving have been introduced. The main challenges in the cutting of microgrooves on ductile materials and brittle materials, respectively, are pointed out. Some innovations in groove-cutting technology are also highlighted. Several aspects in demand for further research and development are provided.

  • Advanced Ceramic Coatings: Fundamentals, Manufacturing, and Classification, R. K. Gupta, A. Motallebzadeh, S. Kakooei, T. A. Nguyen, A. Behera (eds.)

    P. J. Liew, J. Yan, C. Y. Yap, Elsevier B. V., 2023年06月

    担当範囲: Chapter 19: Electrical discharge coating with quarry dust powder suspension,  担当ページ: 433-460

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論文 【 表示 / 非表示

  • Micromachining of Carbon Fiber Reinforced Plastics Using Femtosecond Pulsed Laser

    Konishi, Y; Yan, JW

    NANOMANUFACTURING AND METROLOGY 8 ( 1 )  2025年12月

    ISSN  2520-811X

     概要を見る

    Microscale grooves and holes were fabricated in carbon fiber reinforced plastics (CFRPs) using femtosecond pulsed laser irradiation, and the characteristics and mechanisms of laser processing were investigated. The relationship between laser fluence and ablation depth was established by measuring the cross-sectional profiles of the microgrooves produced at different laser fluences. Furthermore, the effect of the angle between the edge of the micro holes and the carbon fibers was examined by analyzing the edges and wall surfaces of circular and rectangular holes. Experimental results revealed that the laser processing mechanism was strongly dependent on fiber orientation due to significant heat conduction along carbon fibers. The findings of this study contribute to a deeper understanding of the ultrashort pulsed laser processing characteristics and mechanisms for creating small holes in CFRPs and emphasize the possibility of drilling high-precision holes that can be used in the direct bonding of sensors/IC chips to CFRPs.

  • Effect of System Dynamics on Surface Topography in Fast Tool Servo-Based Diamond Turning of Microlens Arrays

    Hashimoto T., Yan J.

    Nanomanufacturing and Metrology 8 ( 1 )  2025年12月

    ISSN  2520811X

     概要を見る

    A lens array is often used for optical components of sensing devices, requiring high surface quality and form accuracy. Fast tool servo (FTS)-based diamond turning is one of the technologies for manufacturing complicated shapes, such as freeform optics, structured surfaces, and microlens arrays, with high machining efficiency. In this study, lens array machining was performed on copper using an FTS on a diamond turning machine. For evaluating the lens array surface topography, the focus was on surface waviness formation. As a dominating factor of surface waviness, the system dynamics behavior was investigated by capturing and analyzing the position signal. It was found that a specific waviness pattern could be formed on the surface due to the servo response. By considering the dynamics of the FTS system from the captured signals, the FTS system behavior was identified, and optimal machining parameters for the lens array were proposed. A machining test under the optimized cutting conditions reduced the average Sdq used to quantify the waviness amount from 93 to 50 µrad and the standard deviation from 33 to 3 µrad, which greatly improved the consistency in accuracy for all lens arrays. This study will contribute to the appropriate utilization of FTS systems in the ultraprecision machining of various advanced optics, such as microlens arrays.

  • Fabrication of Groove-with-Protrusion Surface Structures on Oxygen-Free Copper Using a Laser-Engineered Burnishing Tool

    Otani A., Yan J.

    Nanomanufacturing and Metrology 8 ( 1 )  2025年12月

    ISSN  2520811X

     概要を見る

    Microtextured surfaces, such as those with groove, hole, or protrusion structures, are widely used in various industries for bonding dissimilar materials because of their anchor effect, which enhances adhesion and penetration with other materials. Although surfaces with grooves and protrusions are expected to show higher bonding strength, it is difficult to fabricate such hybrid structures using a material removal process or additive manufacturing. This study established a new burnishing method using a tool with preformed microgrooves at the tip to fabricate groove-with-protrusion structures on metal surfaces by plastic deformation. The tip of a ball-shaped polycrystalline diamond (PCD) tool was irradiated with a femtosecond pulsed laser to generate multiple trapezoid ten-micron scale grooves. Burnishing was then conducted on an oxygen-free copper surface to investigate the characteristics and mechanism of the burnishing-induced plastic deformation behaviors. The results showed that protrusions and grooves, which were several tens of micrometers in height and depth, were simultaneously produced along the tool path on the material surface. Tool sliding on the workpiece induced shear stress, which mainly triggered dislocation movement and plastic deformation enhancement. Cross-sectional observation revealed that grain elongation and refinement remarkably increased with the burnishing depth, indicating that the shear stress from burnishing produced refined grains that flowed and formed the protrusions. This research demonstrates the feasibility of a highly efficient method for simultaneously generating groove-with-protrusion structures with enhanced surface properties.

  • Laser masking enabled replication of latent fingerprints from transparent substrates

    Guo H., Qian Y., Wang X., Zhang Z., Jiang M., Huang H., Yan J.

    Vacuum 242 2025年12月

    ISSN  0042207X

     概要を見る

    Latent fingerprints (LFPs), though critical in forensic investigations, are often invisible and difficult to detect, especially on transparent material surfaces. Here, we present a novel nanosecond pulsed laser printing technique to replicate LFPs from transparent substrates onto metal surfaces. By placing a metal plate beneath the transparent material with the fingerprint side up, the components of the fingerprint selectively block the laser, enabling the transparent substrate to act as a photomask. This results in controlled ablation of the metal surface, replicating the fingerprint with high fidelity. Additionally, laser-induced backside etching produces a mirrored copy of the fingerprint pattern on the underside of the transparent material. Grayscale analysis confirms enhanced clarity of the printed fingerprints compared to the original LFPs. Importantly, the method is effective on curved, colored, and flexible transparent substrates and allows multiple high-quality replications from a single sample, offering a promising tool for forensic applications.

  • Simultaneous laser nitriding and biomimetic texturing: A synergistic strategy for enhancing mechanical properties and corrosion resistance of Ti6Al4V alloy

    Zhang H., Huang H., Yan J.

    Journal of Materials Processing Technology 345 2025年11月

    ISSN  09240136

     概要を見る

    The service reliability and lifespan of Ti6Al4V in high-end equipment application are limited by its poor wear resistance and susceptibility to pitting corrosion. Pulsed laser nitriding and simultaneous microtexturing can improve surface hardness and wear resistance. However, this method faces a mutual constraint between modified layer thickness and structural regularity. In this study, composite microtextures comprising periodic ripples and uniform vein-like structures are fabricated on Ti6Al4V by CW laser nitriding. Inspired by biological surfaces, various biomimetic textures are created, among which the biomimetic fish scale surface (BFS) exhibits remarkable performance enhancement. Its cross-section consists of a dendritic TiN layer on the surface and a dense acicular α'-Ti phase within the molten pool, with the modified layer thickness increasing to nearly 20 μm. Compared with the substrate, the cross-sectional hardness increases by 117 %, while the wear rate decreases by 10 % and 96 % under dry friction and starved lubrication, respectively. Moreover, the corrosion potential shifts positively from −579.84 mV to −299.47 mV, and the corrosion current density decreases by three orders of magnitude. The formation mechanisms of the microtextures are elucidated based on the evolution of microscopic morphologies and finite element simulations. The hardness enhancement is interpreted through analysis of the cross-sectional microstructure, whereas the improvement in corrosion resistance is revealed through impedance spectroscopy and passive film composition. This work provides a new strategy for the integrated construction of nitrided layers and functional microtextures on titanium alloy surfaces.

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総説・解説等 【 表示 / 非表示

  • フェムト秒パルスレーザによる溶融石英のマイクロキャビティ加工

    閻 紀旺

    ツールエンジニア 66 ( 8 ) 83 - 87 2025年07月

    記事・総説・解説・論説等(学術雑誌), 単著, 筆頭著者

  • レーザ活用による高付加価値創造マイクロ・ナノ加工

    閻 紀旺

    機械と工具 14 ( 11 ) 8 - 15 2024年11月

    記事・総説・解説・論説等(学術雑誌), 単著, 筆頭著者

  • レーザ微細加工による機能表面の製作

    閻 紀旺

    レーザ協会誌 49 ( 1 ) 20 - 25 2024年11月

    記事・総説・解説・論説等(商業誌、新聞、ウェブメディア), 単著

  • 金属付加製造品のレーザ研磨技術

    閻 紀旺

    砥粒加工学会誌 67 ( 8 ) 440 - 443 2023年08月

    記事・総説・解説・論説等(学術雑誌), 単著, 筆頭著者

  • 硬脆材料の超精密延性モード加工

    閻 紀旺

    日本機械学会誌 125 ( 1247 ) 11 - 14 2022年10月

    記事・総説・解説・論説等(学術雑誌), 単著, 筆頭著者, 責任著者

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研究発表 【 表示 / 非表示

  • Scale-bridging surface structuring for functional performance improvement of components

    J. Yan

    7th CIRP CSI Conference on Surface Integrity 2024 (ブレーメン) , 

    2024年05月

    口頭発表(基調)

  • Tool Dynamics-induced Surface Topography Error in Fast Tool Servo-Based Diamond Turning of Micro Dome Arrays

    T. Hashimoto, J. Yan

    7th CIRP CSI Conference on Surface Integrity 2024 (ブレーメン) , 

    2024年05月

    口頭発表(一般)

  • Influences of tool tip geometry on surface/subsurface damage formation in nanoscratching of single-crystal 4H-SiC

    W. Huang, J. Yan

    7th CIRP CSI Conference on Surface Integrity 2024 (ブレーメン) , 

    2024年05月

    口頭発表(一般)

  • Ultraprecision manufacturing for small optics

    J. Yan

    Nanotechnology and Precision Engineering (NPE) International Series Forum (Online) , 

    2024年04月

    口頭発表(招待・特別)

  • 自由曲面加工における工具姿勢に起因する切削メカニズム変化

    川上凜太朗,閻 紀旺

    精密工学会第31回学生会員卒業研究発表講演会 (東京) , 

    2024年03月

    口頭発表(一般)

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受賞 【 表示 / 非表示

  • 日本機械学会賞(論文)

    L. Zhang, 佐藤裕亮, 閻 紀旺, 2024年04月, 日本機械学会, Optimization of fast tool servo diamond turning for enhancing geometrical accuracy and surface quality of freeform optics

    受賞区分: 国内学会・会議・シンポジウム等の賞

  • IJEM Best Editor Award

    J. Yan, 2024年01月, International Journal of Extreme Manufacturing (IJEM), IoP publishing

    受賞区分: 学会誌・学術雑誌による顕彰

  • 精密工学会論文賞

    Lin Zhang, Allen Yi, 閻 紀旺, 2023年03月, 精密工学会, Flexible fabrication of Fresnel micro-lens array by off-spindle-axis diamond turning and precision glass molding

    受賞区分: 国内学会・会議・シンポジウム等の賞

  • 2022 IJEM Best Paper Award

    Y. Sato, J. Yan, 2023年03月, International Journal of Extreme Manufacturing (IJEM), IoP publishing, Tool path generation and optimization for freeform surface diamond turning based on an independently controlled fast tool servo

    受賞区分: 学会誌・学術雑誌による顕彰

  • 工作機械技術振興賞(論文賞)

    笠井慎平, 袖平智樹, 閻 紀旺, 2021年06月, 工作機械技術振興財団, 炭素拡散反応を用いた形彫り放電加工による多結晶ダイヤモンドの3次元形状創製

    受賞区分: 出版社・新聞社・財団等の賞

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担当授業科目 【 表示 / 非表示

  • 超精密加工計測

    2025年度

  • マルチディシプリナリ・デザイン科学特別講義

    2025年度

  • 理工学基礎実験

    2025年度

  • 総合デザイン工学課題研究

    2025年度

  • 機械工学創造演習

    2025年度

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所属学協会 【 表示 / 非表示

  • 日本機械学会, 

    1997年04月
    -
    継続中
  • 精密工学会, 

    1997年04月
    -
    継続中
  • 砥粒加工学会, 

    2000年04月
    -
    継続中
  • レーザ協会, 

    2022年01月
    -
    継続中
  • レーザ加工学会, 

    2009年01月
    -
    継続中

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委員歴 【 表示 / 非表示

  • 2025年03月
    -
    継続中

    Fellow, Society of Manufacturing Engineers (SME)

  • 2024年08月
    -
    継続中

    Fellow, The International Academy for Production Engineering (CIRP)

  • 2024年04月
    -
    継続中

    Fellow (foreign), The Engineering Academy of Japan (EAJ)

  • 2022年04月
    -
    継続中

    Fellow, The International Society for Nanomanufacturing (ISNM)

  • 2022年03月
    -
    継続中

    理事・執行理事・出版部会長・校閲委員長, 精密工学会

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