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[4talks] レーザー学会学術講演会第45回年次大会

PUBLICATIONS

2024年1月21~23日に、レーザー学会学術講演会第45回年次大会（広島国際会議場）にて、宮地研が関わる研究成果を４件口頭発表します。

[F01-21a-IV-02] 2025年1月21日(火)10:00-10:30

【招待講演】フェムト秒レーザーで非金属に誘起した表面プラズモンとその応用

[D03-21p-I-02] 2025年1月21日(火)14:00-14:15

ガラス表面へのフェムト秒レーザー誘起ナノ周期構造形成

三善武碩1,2、高田英行2、吉富大2、奈良崎愛子2、宮地悟代1（1. 東京農工大、2. 産総研）

[D03-21p-I-03]  2025年1月21日(火)14:15-14:30

ビーム整形および2光束干渉を用いたフェムト秒レーザー誘起表面周期構造の均一化

住本武優、宮地悟代（東京農工大）

[B09-23a-II-02] 2025年1月23日(木)11:15-11:45

【招待講演】データ駆動型レーザー加工の進展と光源技術への期待

奈良崎愛子1、三善武碩1,2、長井大輔1,2、高田英行1、吉富大1、宮地悟代2（1. 産総研、2. 東京農工大）

[2presentations, Co-Chair] Photonics West 2025

PUBLICATIONS

Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXX および Laser-based Micro- and Nanoprocessing (LBMP) XIX in SPIE. Photonics West 2025（サンフランシスコ、アメリカ）にて、宮地研が関わる研究成果を2件発表します。宮地はLAMOMのCo-Chairです。

[13350-35] Poster presentation

Homogeneous periodic surface nanostructures formed by interference of square flattop femtosecond laser pulses

Author(s): Takemasa Sumimoto, Godai Miyaji, Tokyo Univ. of Agriculture and Technology (Japan)

28 January 2025 • 6:00 PM - 8:00 PM PST

We report on the formation of homogeneous LIPSS by using the two-step ablation process with a square flattop beam of femtosecond (fs) laser pulses. The Gaussian beam from a Yb fs laser system was converted to a square flattop beam by passing through a refractive beam shaper and a square metal mask. This beam was split into two beams with a diffraction optical element and focused on a titanium surface. Firstly, the interference of these two beams formed an interference pattern with a period of 1.8 µm through ablation. Next, the single beam was irradiated onto the surface to form a homogeneous nanostructure with a period of 450 nm in 25 μm square area.

[13351-5] Oral presentation

Surface nanostructuring by using circularly polarized GHz burst mode femtosecond laser pulses

Author(s): Shota Kawabata, RIKEN Ctr. for Advanced Photonics (Japan), Tokyo Univ. of Agriculture and Technology (Japan); Felix Sima, Institutul National pentru Fizica Laserilor, Plasmei si Radiatiei (Romania), RIKEN Ctr. for Advanced Photonics (Japan); Livia Elena Sima, Academia Romana (Romania); Stefana Orobeti, Institutul National pentru Fizica Laserilor, Plasmei si Radiatiei (Romania), Academia Romana (Romania); Shigeru Uchiyama, Takashi Isoshima, Kozunari Ozasa, Kotaro Obata, RIKEN Ctr. for Advanced Photonics (Japan); Mirai Hanzawa, Tokyo Univ. of Agriculture and Technology (Japan), RIKEN Ctr. for Advanced Photonics (Japan); Shi Bai, RIKEN Ctr. for Advanced Photonics (Japan); Godai Miyaji, Tokyo Univ. of Agriculture and Technology (Japan); Koji Sugioka, RIKEN Ctr. for Advanced Photonics (Japan)

27 January 2025 • 11:05 AM - 11:25 AM PST

Recently, there has been growing interest in GHz burst mode femtosecond laser pulses, which are characterized by a series of pulse (intra-pulse) trains with an extremely short pulse-to-pulse interval of several hundred picoseconds. The GHz burst is expected to be a superior tool to achieve high quality, high speed, and high efficiency as compared to the conventional irradiation scheme of fs laser pulses (single-pulse mode). We have revealed that linearly polarized GHz bursts can create lattice-like, 2D laser-induced periodic surface structures (LIPSS), exhibiting distinct geometries from the stripe-patterned 1D-LIPSS formed by the single-pulse mode fs laser pulse irradiation. It’s known that the circularly polarized single-pulse mode fs laser pulses can produce dot-patterned LIPSS on various solid materials. This study explores the potential of creating novel surface nanostructures by using the circularly polarized GHz burst mode fs laser processing and investigate their functionalities.

[Poster] Optics & Photonics Japan (OPJ) 2024

PUBLICATIONS

2024年11月30日に、日本光学会（OSJ）が主催する年次学術講演会 Optics & Photonics Japan (OPJ) 2024（電通大，東京）にて、宮地研が関わる研究成果を発表しました。

[30p3P11]

フェムト秒レーザーのアクティブ制御によるガラス表面への安定したナノ周期構造形成

○三善 武碩1,2，高田 英行2，吉富 大2，奈良崎 愛子2，宮地 悟代1

1東京農工大学，2産総研

[2presentations] ICALEO2024 in Hollywood, LA, USA

PUBLICATIONS

The 43rd annual International Congress on Applications of Lasers & Electro-Optics (ICALEO 2024, Hollywood, LA, USA)にて、2024年11月4-7日に宮地研が関わる2件の発表を行いました。

[Oral] Formation of Complex 2D Surface Nanostructures by Circularly Polarized Femtosecond GHz Burst Pulses

S. Kawabata, S. Bai, K. Obata, M. Hanzawa, K. Ozasa, F. Sima, G. Miyaji, and K. Sugioka

[Poster] Surface Characterization of Surface Nanostructures Fabricated by Femtosecond Laser Pulses in GHz Burst Mode

S. Kawabata, F. Sima, L. Sima, S. Orobeti, S. Uchiyama, T. Isoshima, K. Obata, S. Bai, M. Hanzawa, K. Ozasa, G. Miyaji, and K. Sugioka


International Congress on Applications of Lasers & Electro-Optics | ICALEO

Hollywood, CA     November 4-7, 2024REGISTRATIONCheck out the 2024 Digital Advance Program to get an in-depth look at the content and features of this year's ICALEO conference in Hollywood, CA. Find a welcome message from this year's General Chair, get an overview of the agenda, learn about the conference highlights, and more! View the Program Give your company a spotlight at this year's conference! Our conference partners are invaluable and receive recognition throughout the conference, as well as networking opportunities and a 4-hour vendor reception. More Information We are excited to host you in Hollywood, CA this year for ICALEO 2024 from November 4-7, 2024! Make sure to subscribe to receive the latest information about this year's conference. Suscribe Today Presentations at ICALEO share cutting-edge technology and research in a spectrum of laser-related disciplines. The 2024 Catalyst submission portal has now closed. If you have a submitted an abstract for consideration, you may

icaleo.org

[Poster, Co-Chair] COLA2024 in Crete, Greece

PUBLICATIONS

2024年9月29日~10月4日に、ギリシャのクレタ島で開催されるThe Conference on Laser Ablation (COLA2024)にて、宮地がポスター発表しました。下の3枚目の写真は、Co-Chairs。

Authors: Godai Miyaji* and Akihiro Ishihara

Title: Surface nanostructuring by short-range propagating surface plasmon excited with few-cycle femtosecond laser pulses

COLA 2024, 17th International Conference on Laser Ablation

Welcome to COLA Conference 2024 The International Conference on Laser Ablation (COLA) is the premier event in the field of laser ablation and applications. The 17th COLA conference will be held at the Creta Maris Resort (https://www.cretamaris.gr) in Hersonissos, Crete, Greece from September 29 – October 4, 2024, and promises to be an exceptional gathering of laser scientists, end-users, students and industry professionals from around the world. Since its inception in 1991, COLA has played a pivotal role i

cola2024.eventsadmin.com

[Talk] 第85回応用物理学会秋期学術講演会

PUBLICATIONS

2024年9月18日に、第85回応用物理学会秋期学術講演会（朱鷺メッセ、新潟）にて、宮地研が関わる研究成果を発表しました。

[18p-A25-8]

GHzバーストモードフェムト秒レーザーが形成する新奇微細表面周期構造の固体表面機能評価

〇川端 祥太1,2、Sima Felix1,3、Sima Livia4、Orobeti Stefana3,4、小幡 孝太郎1、半澤 未来1,2、白 石1、尾笹 一成1、宮地 悟代2、杉岡 幸次1 (1.理研　光量子、2.農工大、3.CETAL-Nat. Inst. for Laser, Plasma and Rad. Phys.、4.Inst. of Biochem. of the Romanian Acad.)

[18p-A25-8] GHzバーストモードフェムト秒レーザーが形成する新奇微細表面周期構造の固体表面機能評価 | 2024年第85回応用物理学会秋季学術講演会 | Confit

2024年9月18日(水) 15:15 〜 15:30 2024年第85回応用物理学会秋季学術講演会

2024年第85回応用物理学会秋季学術講演会 | Confit

[2 talks] CLEO-PR2024 in Incheon, Korea

PUBLICATIONS

The 16th Pacific Rim Conference on Lasers and Electro-Optics (CLEO-PR 2024, Incheon, Korea)にて、2024年8月6-8日に宮地研が関わる2件の講演が行われました。

[Contributed talk] S. Kawabata, F. Sima, S. Bai, K. Obata, K. Ozasa, G. Miyaji, and K. Sugioka

Fabrication of 2D periodic surface nanostructures for functionalization of titanium surface by femtosecond laser pulses with GHz burst mode, Tu1I-2, 6th Aug. 2024.

[Contributed talk] K. Obata, M. Hanzawa, F. Sima, H. Kawano, K. Ozasa, Y. Hanada, G. Miyaji, A. Miyawaki, and K. Sugioka

Fabrication of 3D microfluidic biochip using two photon polymerized mold for highresolution live bioimaging, Th1I-2, 8th Aug. 2024.

CLEO-PR 2024

CLEO-PR2024 Plenary SpeakersCLEO-PR 2024 Topics

www.cleopr2024.org

[4talks] LPM2024 in San Sebastián, Spain

PUBLICATIONS

The 25th International Symposium on Laser Precision Microfabrication (LPM2024, San Sebastián, Spain)にて、2024年6月11-14日に宮地研が関わる4件の講演が行われました。

[Invited] Data-driven ultrashort pulse laser processing toward next-generation of precision microfabrication

A. Narazaki, D. Yoshitomi, H. Takada, R. Kuroda, M. Tanaka, H. Ogawa, D. Sato, D. Nagai, T. Miyoshi, N. Nakamura, J. Nishimae, K. Furuta, T. Otsu, T. Nakazato, Y. Kobayashi, K. Takiguchi, Y. Yamahara, K. Asami, and G. Miyaji

Surface characterization of 2D-LIPSS fabricated on titanium surfaces by GHz burst mode femtosecond laser pulses

S. Kawabata, F. Sima, K. Obata, S. Bai, K. Ozasa, G. Miyaji, and K. Sugioka

Super-resolution imaging of cancer cells migrating in CYTOP microchannels fabricated by femtosecond laser

M. Hanzawa, K. Obata, F. Sima , H. Kawano, T. Tojima, D. Miyashiro, K. Ozasa, Y. Hanada, A. Nakano, G. Miyaji, A. Miyawak, and K. Sugioka 

Formation of homogeneous LIPSS on ZnO by two-step process using two-beam interference femtosecond laser

J. Morimoto, S. Bai, Y. Nakata, G. Miyaji, and K. Sugioka 

LPM 2024 – June 11th-14th 2024

Miniaturization and high precision are rapidly becoming requirements in many industrial processes and products. As a result, there is greater interest in the use of laser micro fabrication approaches to achieve these goals. The International Symposium on Laser Precision Microfabrication (LPM) is alternatively held in Japan and in other host countries. To date, LPM has been successfully hosted in Omiya, Singapore, Osaka, Munich, Nara, Williamsburg, Kyoto, Vienna, Quebec, Kobe, Stuttgart, Takamatsu, Washington D.C., Niigata, Vilnius, Kokura, Xi’an, Toyama, Edinburgh, Hiroshima, Dresden and Hirosaki. The aim of this symposium is to provide a forum for discussion of fundamental aspects of laser‐matter interaction, the state‐of‐the‐art of laser materials processing, and topics for the next generation with fundamental scientists, end users and laser manufactures. We expect that LPM2024 would play an important role not only for understanding fundamental knowledge of laser precision microfabri

www.lpm2024.com

[Article] 研究紹介記事 in 河合塾みらいぶっく

EVENT

河合塾みらいぶっくにて、宮地の研究テーマについて紹介されました。

中高生向けの研究紹介・学科紹介です。興味がある方は是非東京農工大 工学部 化学物理工学科を受験してください。

・大学紹介

・宮地研究室研究紹介（農工大生のものすごい研究Ⅱ（工学部））

みらいぶっく｜学問・大学なび​｜河合塾

高校生も中学生も読んでおくといい本。学問につながる本。自分の関心に気づき、学問が広がり始める。300にもわたる学問分野別で学べる大学。新時代の進学、キャリア選択、進路指導。そして新しい大学ランキング。きっと見つかる！自分たちの未来、自分の研究分野、大学

みらいぶっく｜学問・大学なび​｜河合塾

[Invited talk] CLEO 2024

PUBLICATIONS

2024年5月5-10日に、ノースキャロライナ（アメリカ）で開催されるCLEO2024にて宮地が招待講演を行いました。数サイクル7fsレーザーパルスによる微細構造形成とその物理過程についてです。

Session: A&T 2: Laser-based Manufacturing, Machining and Nanoprinting

Paper title: Fine-periodic nanostructure formation on solids with few-cycle femtosecond laser pulses

Paper authors: Godai Miyaji*, Yuto Iida, Seiya Nikaido, and Akihiro Ishihara

*corresponding author

下の写真は実験装置の一部。

CLEO Conference

CLEO Conference

web.cvent.com