Journal of the Korean Society of Visualization (한국가시화정보학회지)

The Korean Society of Visualization (한국가시화정보학회)
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Study on the Fabrication and Characterization of Hydrophobic Surface with Hierarchical Microstructure using Spray Coating Deposition Method

스프레이 코팅 증착 방식을 이용한 계층적 미세 구조의 발수표면 제작 및 특성 분석에 대한 연구

  • Jongyun Choi (Department of Mechanical Engineering, Hannam University) ;
  • Kiwoong Kim (Department of Mechanical Engineering, Hannam University)
  • Received : 2023.09.07
  • Accepted : 2023.10.06
  • Published : 2023.11.30
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Abstract

This research introduces an innovative approach for fabricating microstructure surfaces using spray-coating deposition. The resulting surface, referred to as Magnetically Responsive Microstructures (MRM), exhibits hierarchically structured micro-pillar arrays with remarkably high aspect ratios. The fabrication process involves precisely mixing PDMS and hexane with Carbonyl iron powders, followed by ultrasonication and spray-coating on the top of a PDMS substrate placed on the neodymium magnet. The MRM surface shows hydrophobic properties, characterized by a contact angle surpassing 150° and an aspect ratio exceeding 10. Through a comprehensive exploration of critical parameters, including spray amount, magnet-substrate distance, and solution ratio enhanced dynamic tunability and exceptional hydrophobic characteristics are attained. This novel approach holds significant potential for diverse applications in the realm of dynamically tunable microstructures and magnetically responsive surfaces.

Keywords

Acknowledgement

이 논문은 2022학년도 한남대학교 학술연구비 지원에 의하여 연구되었음.

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