한국재료학회지 (Korean Journal of Materials Research)

  • 제33권2호
  • /
  • Pages.71-76
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  • 2023
  • /
  • 1225-0562(pISSN)
  • /
  • 2287-7258(eISSN)
한국재료학회 (Materials Research Society of Korea)
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레이저 가공을 이용한 이온교환막 표면의 비전도성 마이크로 패턴의 제작

Fabrication of Nonconductive Microscale Patterns on Ion Exchange Membrane by Laser Process

  • 최진웅 (공주대학교 미래융합공학과) ;
  • 조명현 (공주대학교 미래융합공학과) ;
  • 김범주 (공주대학교 미래융합공학과)
  • Jinwoong Choi (Department of Future Convergence Engineering, Kongju National University) ;
  • Myeonghyeon Cho (Department of Future Convergence Engineering, Kongju National University) ;
  • Bumjoo Kim (Department of Future Convergence Engineering, Kongju National University)
  • 투고 : 2023.01.09
  • 심사 : 2023.01.30
  • 발행 : 2023.02.27
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초록

The electroconvection generated on the surface of an ion exchange membrane (IEM) is closely related to the electrical/chemical characteristics or topology of the IEM. In particular, when non-conductive regions are mixed on the surface of the IEM, it can have a great influence on the transfer of ions and the formation of nonlinear electroconvective vortices, so more theoretical and experimental studies are necessary. Here, we present a novel method for creating microscale non-conductive patterns on the IEM surface by laser ablation, and successfully visualize microscale vortices on the surface modified IEM. Microscale (~300 ㎛) patterns were fabricated by applying UV nanosecond laser processing to the non-conductive film, and were transferred to the surface of the IEM. In addition, UV nanosecond laser process parameters were investigated for obvious micro-pattern production, and operating conditions were optimized, such as minimizing the heat-affected zone. Through this study, we found that non-conductive patterns on the IEM surface could affect the generation and growth of electroconvective vortices. The experimental results provided in our study are expected to be a good reference for research related to the surface modification of IEMs, and are expected to be helpful for new engineering applications of electroconvective vortices using a non-conductive patterned IEM.

키워드

과제정보

This work was supported by National Research Foundation of Korea (NRF) grants funded by the Korea government (MS IT) (No. 2022R1F1A1064531) and (MOE) (2021RIS-004).

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