Terakawa Group, Keio University Department of Electronics and Electrical Engineering

News in 2022

Dec. 5, 2022 Invited talk, FLA-3

Prof. Terakawa will give an invited talk at the 3rd International Workshop on Frontiers in Lasers and Applications (FLA-3).

"Laser-induced Carbonization for Electrical and Optical Applications"
M. Terakawa, R. Miyakoshi, R. Funayama, S. Hayashi

Nov. 28, 2022 Presentations, MRS Fall Meeting

The following presentations will be given at the 2022 MRS Fall Meeting & Exhibit.

“Hydrogel Supercapacitor Fabricated by Lignin-Mediated Laser-Induced Graphitization”
R. Miyakoshi, S. Hayashi, M. Terakawa

“Direct Writing of Graphene and Silicon Carbide Quantum Dots on an Elastomer by Laser-Induced Carbonization”
S. Hayashi, M. Terakawa

“Spatially-Targeted Reinforcement of Hydrogel Microstructure by Cross-Linking of Double Network Hydrogels Using Femtosecond Laser”
K. Tsunemitsu, A. Watanabe, H. Onoe, M. Terakawa

Oct. 17, 2022 Publication, RSC Advances

The paper entitled "Simultaneous laser-based graphitization and microstructuring ofbamboo for supercapacitors derived from renewable resources" has been accepted and published in RSC Advances.
Authors: R. Miyakoshi, S. Hayashi, M. Terakawa

https://pubs.rsc.org/en/Content/ArticleLanding/2022/RA/D2RA05641K

Sep. 21, 2022 Shuichiro Hayashi visiting Prof. Arnold group, Princeton University

PhD student, Shuichiro Hayashi, is visiting Prof. Craig Arnold group, Princeton University. He will stay there until March 2023 for his research activity.

Sep. 22, 2022 Presentations, The 83rd JSAP Autumn Meeting 2022

The following presentations will be given at the 83rd JSAP Autumn Meeting 2022.

"Hydrogel Supercapacitor Fabricated by Lignin-mediated Laser-induced Graphitization"
R. Miyakoshi, S. Hayashi, M. Terakawa
"Fabrication of Biodegradable Triboelectric Nanogenerators by Laser Direct Writing"
R. Funayama, S. Hayashi, M. Terakawa

Sep. 19, 2022 Invited talk, ICSQE2022

Prof. Terakawa will give an invited talk entitled "Femtosecond laser-induced carbonization and graphitization" at the 22nd International Conference and School on Quantum Electronics.

Aug. 2, 2022 Presentation, CLEO Pacific Rim 2022

The following presentation was given at CLEO Pacific Rim 2022.

"Multiphoton Photoreduction for Biomimetic Applications of Hydrogels"
Y. Nagano, K. Tsunemitsu, M. Terakawa

Aug. 1, 2022 Publication, Optical Materials Express

The paper entitled "Light-driven flow control in the hydrogel microchannel by utilizing a metal microstructure fabricated by multiphoton photoreduction" has been accepted and published in Optical Materials Express.
https://doi.org/10.1364/OME.468771

Jun. 15, 2022 Publication, Plant Methods

The paper entitled "Laser-based molecular delivery and its applications in plant science" (D. Heinemann, M. Zabic, M. Terakawa, J. Boch) has been accepted and published in Plant Science.
Plant Methods 18, 82 (2022).
https://doi.org/10.1186/s13007-022-00908-9

Jun. 7, 2022 Presentation, LPM 2022

The following presentation was given at 23rd International Symposium on Laser Precision Microfabrication (LPM2022).

"Urea-Selective Plasmonic Sensing with Gold Microstructures Fabricated by Multi-Photon Photoreduction inside a Hydrogel"
Keiki Muranaka, Yo Nagano, Mitsuhiro Terakawa

Apr. 25, 2022 Presentations, COLA2021/2022

The following presentations will be given at 16th International Conference of Laser Ablation (COLA2021/2022).

"Laser direct writing of electrically conductive structure on biodegradable polymer composite"
R. Funayama, S. Hayashi, M. Terakawa

"Fabrication of hydrogel for dynamic and wavelength-selective optical switching by using multiphoton-photoreduction"
H. Tomikawa, Y. Nagano, K. Tsunemitsu, M. Terakawa

"Laser direct writing of graphene quantum dots using a femtosecond laser"
S. Hayashi, K. Tsunemitsu, M.Terakawa

Apr. 1, 2022 Terakawa got promoted to a Full Professor

Mitsuhiro Terakawa got promoted to a full professor on April 1st, 2022.

Mar. 28, 2022 Fujiwara Award, Shuichiro Hayashi

Shuichiro Hayashi, PhD student, received the Fujiwara Award. Congratulations!



It is great pleasure to announce that Shuichiro, Fumiya, and Rei received awards in their PhD, Master, and Bachelor courses, respectively, in this academic year.
We thank awarders, research collaborators, colleagues, and all members and alumni of our group.

Mar. 28, 2022 Outstanding Research Award (MS), Fumiya Morosawa

Fumiya Morosawa, Master student, received the Outstanding Research Award from the School of Integrated Design Engineering, Keio University. Congratulations!

Mar. 23, 2022Outstanding Graduation Thesis Award, Rei Funayama

Rei Funayama, undergraduate student, received the Outstanding Graduation Thesis Award from the Department of Electronics and Electrical Engineering, Keio University. Congratulations!

Feb. 18, 2022 Publication, ACS Omega

The paper entitled "Effects of pulsed laser irradiation on gold-coated silver nanoplates and their antibacterial activity" (E. Takeda, W. Xu, M. Terakawa, T. Niidome) has been accepted and published in ACS Omega.
https://doi.org/10.1021/acsomega.1c07058

Prof. Niidome of Kumamoto University leads this study. Terakawa group takes part in the laser irradiation experiments.

Feb. 1, 2022 Publication, Appl. Surf. Sci.

The paper entitled “Nanosecond laser-induced oriented periodic structures on AlN ceramic” (N. Nedyalkov, A. Dikovska, R. Nikov, Ro.Nikov, T. Dliova, G. Atanasova, L. Aleksandrov, D. Karashanova, V. Strijkova, M. Terakawa) has been accepted and published in Applied Surface Sciences.
https://doi.org/10.1016/j.apsusc.2022.152712

Jan. 22, 2022 Invited talk, SPIE Photonics West 2022

Invited talk will be given at SPIE Photonics West 2022.

“Laser direct writing of functional microstructures in transparent soft materials using femtosecond laser”
M. Terakawa, S. Hayashi, F. Morosawa, H. Tomikawa, Y. Nagano, M. Machida, H. Onoe, A. Heisterkamp

（arranged to give in On Demand format in Feb.）

Jan. 22, 2022 Presentations, SPIE Photonics West 2022

The following presentations will be given at the SPIE Photonics West 2022.

“Light-driven flow control within the microchannel inside a hydrogel by utilizing metal microstructures fabricated by multiphoton photoreduction”
Y. Nagano, H. Onoe, M. Terakawa

“Double-network hydrogel microstructures fabricated by multi-photon cross-linking for changing three-dimensional mechanical strength”
K. Tsunemitsu, A. Watanabe, H. Onoe, M. Terakawa

“Fabrication of supercapacitor by femtosecond laser-induced graphitization of cellulose nanofiber film”
F. Morosawa, S. Hayashi, R. Miyakoshi, M. Terakawa

“Fabrication of supercapacitor using electrically-conductive-porous carbon patterned by laser carbonization of bamboo”
R. Miyakoshi, F. Morosawa, S. Hayashi, M. Terakawa
（arranged to give in On Demand format in Feb.）