TY - GEN
T1 - 3D Hydrogel Manufacturing Employing Self-Focusing during Photo-Curing Process
AU - Lee, Gayeong
AU - Takahashi, Hidetoshi
AU - Kan, Tetsuo
AU - Kim, Jieun
AU - Donmez, Nilsu
AU - Park, Jihoon
AU - Kim, Dongwook
AU - Ka, Sanghoon
AU - Nam, Misong
AU - Lim, Donggi
AU - Heo, Yun Jung
N1 - Funding Information:
This research was funded by NATIONAL RESEARCH FOUNDATION OF KOREA, grant number NRF-2017R1C1B5076947 and NRF-2019K2A9A2A0 8000118. This work was partly supported by JSPS and NRF under the Japan-Korea Basic Scientific Cooperation Program. This research was supported by Nano Material Technology Development Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning. (2009-0082580).
Publisher Copyright:
© 2020 IEEE.
PY - 2020/1
Y1 - 2020/1
N2 - This work proposes a 3D lithography technique with self-focusing during polymerization based on refractive-indices change of polyethylene glycol diacrylate (PEGDA) (Fig. 1). Compared to the previous work, the present work enables to fabricate 3D structures using single UV exposure and theoretically estimate 3D features. We demonstrate the potential of the self-focusing 3D lithography by fabricating PEGDA microneedles and trapezoid-shaped wells. Their structures well match to our theoretical estimation. Therefore, our theoretical approach shows its potential for on-demand, complicated 3D structures of refractive-indices-variable materials with single UV exposure.
AB - This work proposes a 3D lithography technique with self-focusing during polymerization based on refractive-indices change of polyethylene glycol diacrylate (PEGDA) (Fig. 1). Compared to the previous work, the present work enables to fabricate 3D structures using single UV exposure and theoretically estimate 3D features. We demonstrate the potential of the self-focusing 3D lithography by fabricating PEGDA microneedles and trapezoid-shaped wells. Their structures well match to our theoretical estimation. Therefore, our theoretical approach shows its potential for on-demand, complicated 3D structures of refractive-indices-variable materials with single UV exposure.
KW - 3D lithography
KW - Microneedle
KW - PEGDA
KW - Self-focusing
UR - http://www.scopus.com/inward/record.url?scp=85083175786&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85083175786&partnerID=8YFLogxK
U2 - 10.1109/MEMS46641.2020.9056299
DO - 10.1109/MEMS46641.2020.9056299
M3 - Conference contribution
AN - SCOPUS:85083175786
T3 - Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
SP - 323
EP - 324
BT - 33rd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2020
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 33rd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2020
Y2 - 18 January 2020 through 22 January 2020
ER -