AccessJP

Search

Menu

Study at TCU

Reseacher

Name KODAMA Shuhei
Official Title Associate Professor
Affiliation Mechanical Engineering
E-mail skodama@tcu.ac.jp
Web
  1. https://www.risys.gl.tcu.ac.jp/Main.php?action=profile&type=detail&tchCd=5002261000
Profile My specialty is the micro/nano processing, particularly in the fields of laser processing and electrochemical machining (ECM) for surface functionalization. The pursuit of new techniques is essential to create high-value products, and through micro/nano-processing, functional interfaces can be created, thus enhancing the functions of material surfaces. The ultrashort-pulsed lasers induces periodic nanostructures known as LIPSS (laser-induced periodic surface structures) through a self-organizing process. This remarkable phenomenon holds the potential to enhance the functionality of material surfaces in terms of tribology, wettability, and other aspects. In my research, I have focused on elucidating the phenomena involved in fs/ps laser processing and controlling over the mechanisms by employing methods such as electromagnetic field analysis, in-process observations, and the development of hybrid processing techniques that laser processing and machining. Furthermore, I am engaged in the functionalization of micro/nano interfaces on diverse material surfaces through my newly developed technologies. By employing laser texturing, my research aims to enhance material surface properties and functionalities, thus paving the way for widespread implementation in various devices.
Research Field(Keyword & Summary)
  1. (1) Ultrashort-pulsed laser micro/nanotexturing

    Ultrashort-pulsed lasers can fabricate periodic nanostructures, known as LIPSS, through the process of self-organization. A comprehensive understanding of the underlying phenomenon and control over the mechanisms governing LIPSS are essential. To address this, a novel approach combining ultraprecision machining and ultrashort-pulsed lasers has been developed, enabling control over LIPSS and facilitating the fabrication of hybrid structures. This is achieved by leveraging the propensity of LIPSS to trace the micro/nanogrooves created upon the material surface.

  2. (2) Observation of fs/ps laser processing

    It is difficult to directly observe the dynamics of ultrashort-pulsed laser ablation, which changes at high speeds. The mechanism is mainly investigated based on the results of irradiated surfaces and analysis. Therefore, an apparatus is developing that can directly observe processing phenomena with fs/ps time resolution.

  3. (3) Hybrid laser processing with ECM

    Electrochemical machining (ECM) can be used for removal and addition by changing the positive and negative electrodes. By combining laser irradiation in liquid with ECM, new surface processing technologies have been developed for the creation of multi-scale structures and the creation of micro/nanostructures with modification.

  4. (4) Creation of functional interface

    Micro/nanostructures have the remarkable ability to confer diverse functionalities upon material surfaces, encompassing attributes such as enhanced antifriction properties, optimized wettability, and exceptional biocompatibility. The objective of this research is to discover functional interfaces that can be applied to a myriad of devices through the transformative potential of laser processing.
Representative Papers
  1. (1)Liwei Chen, Yifei Zhang, Shuhei Kodama, Shaolin Xu, Keita Shimada,Masayoshi Mizutani, Tsunemoto Kuriyagawa: Picosecond laser-induced nanopillar coverage of entire mirror-polished surfaces of Ti6Al4V alloy, Precision Engineering, Vol. 72, pp. 556-567, 2021.
  2. (2)Shuhei Kodama, Wataru Natsu: Effects of Electrolyte on Laser-Induced Periodic Surface Structures with Picosecond Laser Pulses, Nanomaterials, Vol. 11, No. 327, pp. 1-12, 2021.
  3. (3)Ryohei TAKASE, Shuhei KODAMA, Keita SHIMADA, Holger MESCHEDER, Kai WINANDS, Jan RIEPE, Kristian ARNTZ, Masayoshi MIZUTANI, Tsunemoto KURIYAGAWA: Study on creation of fine periodic structure on V-shaped groove with short-pulsed laser, International Journal of Automation Technology, Vol.14, No.4, pp. 601-613, 2020.
  4. (4)Shuhei KODAMA, Keita SHIMADA, Masayoshi MIZUTANI, Tsunemoto KURIYAGAWA: Effects of Pulse Duration and Heat on Laser-Induced Periodic Surface Structures, International Journal of Automation Technology, Vol.14, No.4, pp. 552-559, 2020.
  5. (5)Shuhei KODAMA, Hitomi YAMAGUCHI, Keita SHIMADA, Masayoshi MIZUTANI, Tsunemoto KURIYAGAWA: Control of Short-Pulsed Laser Induced Periodic Surface Structures with Machining -Picosecond Laser Nanotexturing with Magnetic Abrasive Finishing-, Precision Engineering, Vol. 60, pp. 428-436, 2019.
  6. (6)Shuhei KODAMA, Shinya SUZUKI, Kazuya HAYASHIBE, Keita SHIMADA, Masayoshi MIZUTANI, Tsunemoto KURIYAGAWA: Control of Short-Pulsed Laser Induced Periodic Surface Structures with Machining -Picosecond Laser Micro/Nanotexturing with Ultraprecision Cutting-, Precision Engineering, Vol. 55, pp. 433-438, 2019.
  7. (7)Shuhei KODAMA, Shinya SUZUKI, Akihiro SHIBATA, Keita SHIMADA, Masayoshi MIZUTANI, Tsunemoto KURIYAGAWA: Effect of Crystal Structure on Fabrication of Fine Periodic Surface Structures with Short Pulsed Laser, International Journal of Automation Technology, Vol. 12, No. 6, pp. 868-875, 2018.
  8. (8)Shuhei KODAMA, Akihiro SHIBATA, Shinya SUZUKI, Keita SHIMADA, Masayoshi MIZUTANI, Tsunemoto KURIYAGAWA: Fabrication and control of fine periodic surface structures by short pulsed laser, International Journal of Automation Technology, Vol. 10, No. 4, pp. 639-646, 2016.
  9. (9)Akihiro SHIBATA, Shuhei KODAMA, Keita SHIMADA, Masayoshi MIZUTANI, Tsunemoto KURIYAGAWA: Explication for Femtosecond-Laser-Induced Nanostrucuring on Glass Surface, Journal of the Japan Society for Precision Engineering, Vol. 82, No. 5, pp. 443-447, 2016. in japanese
  10. (10)Akihiro SHIBATA, Naoto KANEKO, Shinya SUZUKI, Shuhei KODAMA, Jun SHIMIZU, Keita SHIMADA, Masayoshi MIZUTANI, Tsunemoto KURIYAGAWA: Femtosecond-Laser-Induced Nanofabrication on Glass, Journal of the Japan Society for Precision Engineering, Vol. 81, No. 9, pp. 862-866, 2015. in japanese
Award JSME Young Engineers Award, 2021 JSPE Numata Memorial Paper Award, Dean’s Award of the Graduate School of Engineering (Tohoku University)
Grant-in-Aid for Scientific Research Support: Japan Society for Promotion of Science (JSPS) https://nrid.nii.ac.jp/en/nrid/1000010867237/
Recruitment of research assistant(s) No
Affiliated academic society (Membership type) Japanese Society of Mechanical Engineering, Japanese Society of Electrical Machining, Japanese Society of Precision Engineering
Education Field (Undergraduate level) Material Processing, Surface Engineering
Education Field (Graduate level) Surface Engineering

Affiliation