3D Hydrogel Manufacturing Employing Self-Focusing during Photo-Curing Process

Gayeong Lee, Hidetoshi Takahashi, Tetsuo Kan, Jieun Kim, Nilsu Donmez, Jihoon Park, Dongwook Kim, Sanghoon Ka, Misong Nam, Donggi Lim, Yun Jung Heo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publication33rd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages323-324
Number of pages2
ISBN (Electronic)9781728135809
DOIs
Publication statusPublished - 2020 Jan
Event33rd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2020 - Vancouver, Canada
Duration: 2020 Jan 182020 Jan 22

Publication series

NameProceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
Volume2020-January
ISSN (Print)1084-6999

Conference

Conference33rd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2020
CountryCanada
CityVancouver
Period20/1/1820/1/22

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Keywords

  • 3D lithography
  • Microneedle
  • PEGDA
  • Self-focusing

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanical Engineering
  • Electrical and Electronic Engineering

Cite this

Lee, G., Takahashi, H., Kan, T., Kim, J., Donmez, N., Park, J., Kim, D., Ka, S., Nam, M., Lim, D., & Heo, Y. J. (2020). 3D Hydrogel Manufacturing Employing Self-Focusing during Photo-Curing Process. In 33rd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2020 (pp. 323-324). [9056299] (Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS); Vol. 2020-January). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/MEMS46641.2020.9056299