Terakawa Group, Keio University Department of Electronics and Electrical Engineering

News in 2023

Apr. 9, 2024 Invited talk, SPIE Photonics Europe 2024

Prof. Terakawa will give an invited talk entitled “Laser-driven conversion of sustainable materials for electrical applications” at SPIE Photonics Europe 2024.

Apr. 9, 2024 Presentations, SPIE Photonics Europe 2024

The following presentations will be given at SPIE Photonics Europe 2024.

“Formation of laser-induced porous graphitic carbon structures for high capacitance supercapacitors”
M. Kato, Y. Kondo, Y. Hattori, R. Funayama, S. Hayashi, M. Terakawa

“Biocompatible hydrogel-based plasmonic sensor for glucose sensing”
A. Ahmed, T. Amend, C. Wenck, M. Terakawa, M. L. Torres-Mapa, A. Heisterkamp

Mar. 18, 2024 Publication, ACS Appl. Opt. Mater.

The paper entitled “Light-Triggered Transmittance Control in Thermoresponsive Hydrogels by Femtosecond Laser Direct Writing” has been accepted and published in ACS Applied Optical Materials.
(K. Kashikawa, H. Tomikawa, H. Onoe, M. Terakawa)

Mar. 14, 2024 Publication, Opt. Mater. Exp.

The paper entitled “Temperature measurement and morphological/crystalline differences in the laser-induced carbonization of polydimethylsiloxane” has been accepted and published in Optical Materials Express.
(M. Kai, S. Hayashi, K. Kashikawa, M. Terakawa)

Feb. 10, 2024 Publication, Opt. Laser Technol.

The paper entitled "Defect-initiated formation mechanism of 3D carbon tracks on flexible transparent substrates by laser irradiation"has been accepted and pubilshed in Optics & Laser Technology.
S. Hayashi, X. Du, M. Rupp, K. A. Filsinger, M. Terakawa, C. B. Arnold

https://doi.org/10.1016/j.optlastec.2024.110686

November 26, 2023 Presentations, 2023 MRS Fall Meeting & Exhibit

The following presentations will be given at 2023 MRS Fall Meeting & Exhibit.

“Temperature Measurements During Laser-Induced Graphitization of Polydimethylsiloxane”
M. Kai, S. Hayashi, K. Kashikawa, M. Terakawa

“Controlling Optical Response of Hydrogel using Metallic Microstructures Fabricated with High-Speed Scanning of Femtosecond Laser Pulses”
K. Kashikawa, H. Tomikawa, H. Onoe, M. Terakawa

Oct. 1, 2023 Publication, Opt. Mater. Exp.

The paper entitled “Spatially-selective enhancement of mechanical strength through localized cross-linking of double network hydrogels” has been accepted and published in Optical Materials Express.
K. Tsunemitsu, A. Watanabe, H. Onoe, M. Terakawa

https://doi.org/10.1364/OME.501113

Sep. 21, 2023 Invited talk, ICPEPA-12

Prof. Terakawa will give an invited talk entitled "Laser Fabrication of Functional Microstructures on Hydrogel" at ICPEPA-12.

Sep. 11, 2023 News, Summer off-site meeting

Lab members had summer off-site meeting.

Sep. 7, 2023 News, Int’l workshop LMPA2023

We hosted an International Workshop on Laser Material Processing and Applications (LMPA 2023) in Hida Takayama. Distinguished researchers from Japan, the United States, Spain, the United Kingdom, Italy, Germany, France, Taiwan, Switzerland, Australia, Greece, Thailand, and South Korea gathered, and over five days, they presented their research findings, engaged in discussions, and fostered exchanges. Shuichiro Hayashi from our lab received The Outstanding Student Paper Award.

Aug. 7, 2023 News, Closing party of the spring semester

The closing party for the spring semester was held.

July 4, 2023 Presentation, PIERS 2023

The following presentations will be given at PIERS 2023.

“Direct Writing of GQDs with Different Fluorescent Properties by Femtosecond Laser Irradiation on PDMS”
K. Tsukada, M. Terakawa

July 3, 2023 Invited talk, PIERS 2023

Prof. Terakawa will give an invited talk entitled "Laser Direct Writing on Flexible Materials for Electrical and Optical Applications " at PIERS 2023.

June 13, 2023 Invited talk, LPM 2023

Prof. Terakawa will give an invited talk entitled “Laser-induced graphitization of sustainable materials” at The 24th International Symposium on Laser Precision Microfabrication (LPM 2023).

June 13, 2023 Presentations, LPM2023

The following presentations will be given at the 24th International Symposium on Laser Precision Microfabrication (LPM 2023).

“Consideration of heating rates on structure formation for laser-induced graphitization of polymers”
S. Hayashi, X. Du, M. Rupp, K. A. Filsinger, M. Terakawa, C. B. Arnold

“Fabrication of Triboelectric Nanogenerators by Laser-induced Graphitization of Cellulose Nanofiber Films”
Y. Kondo, R. Funayama, M. Terakawa

June 8, 2023 Invited talk, PULMM 2023

Prof. Terakawa will give an invited talk at Progress in Ultrafast Laser Modification of Materials (PULMM 2023). The title of the talk will be announced soon.

Mar. 5, 2023 Publication, Advanced Electronic Materials

The paper entitled “Direct patterning of conductive structures on hydrogels by laser-based graphitization for supercapacitor fabrication” has been accepted and published in Advanced Electronic Materials.
Authors: R. Miyakoshi, S. Hayashi, M. Terakawa

https://doi.org/10.1002/aelm.202201277

Feb. 22, 2023 Publication, Plasmonics

The paper entitled “Formation of gold nanoparticles inside a hydrogel by multiphoton photoreduction for plasmonic sensing” has been accepted and published in Plasmonics.
Authors: K. Muranaka, T. Niidome, M. L. Torres-Mapa, A. Heisterkamp, M. Terakawa

https://doi.org/10.1007/s11468-023-01804-1

Feb. 9, 2023 Publication, ACS Sustainable Chem. Eng.

The paper entitled "Laser-Induced Graphitization of Lignin/PLLA Composite Sheets for Biodegradable Triboelectric Nanogenerators" has been accepted and published in ACS Sustainable Chemistry & Engineering.
Authors: R. Funayama, S. Hayashi, M. Terakawa

https://doi.org/10.1021/acssuschemeng.2c07510

Jan. 28, 2023 Presentations, SPIE Photonics West 2023

The following presentations will be given at the SPIE Photonics West 2023.

“Direct writing of conductive and semiconductive structures via the femtosecond laser-induced carbonization of a silicone elastomer”
S. Hayashi, M. Terakawa

“Fabrication of biodegradable triboelectric nanogenerator by laser-induced graphitization of lignin/PLLA composite sheets”
R. Funayama, S. Hayashi, M. Terakawa

Jan. 23, 2023 Publication, ACS Appl. Nano Mater.

The paper entitled "Direct Writing of Fluorescent Semiconducting Nanoparticles on Polydimethylsiloxane by Ultrashort-Pulsed Laser Processing: Implications for Electronic and Photonic Device Fabrication" has been accepted and published in ACS Appl. Nano Mater.
Authors: S. Hayashi, M. Terakawa

https://doi.org/10.1021/acsanm.2c05134

Jan. 6, 2023 News, Mitsuhiro Terakawa becomes a Fellow of SPIE.

It's a pleasure to announce that Mitsuhiro Terakawa became a Fellow of SPIE.

　　　　　　　　
https://spie.org/news/spie-the-international-society-for-optics-and-photonics-announces-its-2023-fellows

(Added on Feb. 15 )

The award ceremony was held at Photonics West 2023.