Terakawa Group, Keio University Department of Electronics and Electrical Engineering

News in 2021

Dec. 28, 2021 Publication, Nano Letters

The paper entitled "Laser Direct Writing of Graphene Quantum Dots inside a Transparent Polymer" has been accepted and published in Nano Letters.
Authors: Shuichiro Hayashi, Kaneto Tsunemitsu, Mitsuhiro Terakawa

https://pubs.acs.org/doi/10.1021/acs.nanolett.1c04295

Dec. 15, 2021 Presentation, MRM2021

The following presentation will be given at the Materials Research Meeting (MRM2021).

“Femtosecond Laser-Induced Graphene from Sustainable and Elastic Materials”
S. Hayashi, F. Morosawa, R. Miyakoshi, M. Terakawa

Nov. 29, 2021 Presentations, MRS Fall Meeting

The following presentation will be given at the 2021 MRS Fall Meeting & Exhibit.

“Dynamically Changing the Transmission Property of Hydrogel using Metal Microstructures Fabricated by Multi-Photon Photoreduction”
H. Tomikawa, K. Tsunemitsu, Y. Nagano, M. Terakawa

“Direct Writing of Highly Crystalline Laser-Induced Graphene on Polydimethylsiloxane for Wearable Devices”
S. Hayashi, F. Morosawa, R. Miyakoshi, M. Terakawa

Nov. 25, 2021 Publication, Appl. Phys. A

The paper entitled “Nanosecond laser ablation of AlN ceramic” has been accepted and published in Applied Physics A.
N. Nedyalkov, A. Dikovska, L. Aleksandrov, M. Terakawa

Oct. 1, 2021 Welcoming Lingyi, joining our group

Lingyi MENG, graduate student of TU Dresden, joined our group as a Short Term International Student. Her study focuses on the temperature calculation under laser irradiation.
Welcome to join our group!

Jul. 5, 2021 Invited Talk, FLA-2

Invited talk will be given at 2nd International Workshop on Frontiers in Lasers and Applications (FLA-2).

“Laser-Induced Graphitization of Soft and Sustainable Materials”
M. Terakawa

The workshop will be organized as Web-Event. 4 days of Q&A and discussion sessions will be conducted on the virtual platform every week in July.

Jul. 3, 2021 Publication, Advanced Engineering Materials

The paper entitled “Laser Direct Writing of Highly Crystalline Graphene on PDMS for Fingertip-Sized Piezoelectric Sensors” has been accepted and published in Advanced Engineering Materials.
Authors: Shuichiro Hayashi, Fumiya Morosawa, Mitsuhiro Terakawa
https://doi.org/10.1002/adem.202100457

Jun. 25, 2021 Presentation, CLEO/Europe-EQEC 2021

The following presentation will be given at the CLEO/Europe-EQEC 2021.

“Electrically conductive porous carbon structures fabricated by laser direct carbonization of bamboo”
Rikuto Miyakoshi, Fumiya Morosawa, Shuichiro Hayashi, Mitsuhiro Terakawa

Jun. 8, 2021 Presentations, LPM 2021

The following presentations will be given at the The 22nd International Symposium on Laser Precision Microfabrication.

“Laser Direct Writing of Electrically Conductive Graphitic Carbon on Cellulose Nanofiber using 522-nm Femtosecond Laser”
F. Morosawa, S. Hayashi, M. Terakawa

“Laser-direct writing of a small and sensitive pressure sensor by laser-induced graphitization of PDMS”
S. Hayashi, F. Morosawa, M. Terakawa

“Multiphoton polymerization of cellulose nanofiber-reinforced hydrogel”
H. Sugiyama, K. Tsunemitsu, H. Onoe, K. Obata, K. Sugioka, M. Terakawa

May 25, 2021 Publication, Sci. Rep.

The paper entitled “Microfabrication of cellulose nanofiber-reinforced hydrogel by multiphoton polymerization” has been accepted and published in Scientific Reports.
H. Sugiyama, K. Tsunemitsu, H. Onoe, K. Obata, K. Sugioka, M. Terakawa
www.nature.com/articles/s41598-021-90445-7

Apr. 29, 2021 Book Chapter, "Laser-induced Carbonization and Graphitization"

Book chapter on the fundamental and applications of laser-induce graphene have been published by Springer.

Terakawa M. (2021) Laser-Induced Carbonization and Graphitization. In: Sugioka K. (eds) Handbook of Laser Micro- and Nano-Engineering. Springer Nature Switzerland AG (2021)
DOI: https://doi.org/10.1007/978-3-319-69537-2_65-1

Mar. 16, 2021 Young Scientist Presentation Award, JSAP

Graduate student, Shuichiro Hayashi, has received The Young Scientist Presentation Award (Oral) by his presentation at JSAP Fall Meeting 2020. Congratulations!

Mar. 6, 2021 Presentation, Photonics West

The following presentations will be given at the Photonics West 2021

“Charged fluorophores-assisted fabrication of metallic structures inside hydrogel by multi-photon photoreduction”
Manan Machida, Weilu Shen, Hiroaki Onoe, Alexander Heisterkamp, Eric Mazur, Mitsuhiro Terakawa

“Femtosecond-laser direct writing of electrically conductive structures on PDMS for flexible device applications”
Shuichiro Hayashi, Fumiya Morosawa, Mitsuhiro Terakawa,

“Microfabrication of double-network hydrogel with enhanced mechanical properties by multi-photon polymerization”
Kaneto Tsunemitsu, Ryo Sano, Akira Watanabe, Hiroaki Onoe, Mitsuhiro Terakawa

Feb. 15, 2021 Publication, ACS Sustain. Chen. Eng.

The paper entitled “Femtosecond Laser-Induced Graphitization of Transparent Cellulose Nanofiber Films” has been accepted and published in ACS Sustain. Chem. Eng.
https://doi.org/10.1021/acssuschemeng.0c09153