마이크로전자및패키징학회지 (Journal of the Microelectronics and Packaging Society)

  • 제23권1호
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  • Pages.23-28
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  • 2016
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  • 1226-9360(pISSN)
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  • 2287-7525(eISSN)
한국마이크로전자및패키징학회 (The Korean Microelectronics and Packaging Society)
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액적의 구름저항에 대한 정접촉각 및 거칠기의 영향

Effects of Static Contact Angle and Roughness on Rolling Resistance of Droplet

  • 조원경 (부산대학교 광메카트로닉스공학과) ;
  • 조상욱 (부산대학교 인지메카트로닉스공학과) ;
  • 김두인 (부산대학교 BK21+나노융합인지메카트로닉스공학 사업단) ;
  • 김대업 (한국생산기술연구원 전북지역본부 탄소경량소재응용그룹) ;
  • 정명영 (부산대학교 광메카트로닉스공학과)
  • Cho, Won Kyoung (Department of Opto-Mechatronics Engineering, Pusan National University) ;
  • Cho, Sang Uk (Department of Cogno-Mechatronics Engineering, Pusan National University) ;
  • Kim, Doo-In (BK21+Nano-integrated Cognomechatronics Engineering, Pusan National University) ;
  • Kim, Dae-Up (Carbon & Light Materials Application R&D Gropu, KITECH) ;
  • Jeong, Myung Yung (Department of Opto-Mechatronics Engineering, Pusan National University)
  • 투고 : 2016.03.14
  • 심사 : 2016.03.25
  • 발행 : 2016.03.30
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초록

본 연구에서는 소수성 구현을 위한 표면 거칠기가 접촉각과 접촉각 이력에 미치는 영향을 평가하였다. 초발수 특성을 극대화하기 위해, 액적이 이동하기 위해 필요한 구름저항력을 제안하였으며, 이에 대한 평가를 통하여 표면에 형성한 패턴이 접촉각 이력 및 구름저항력에 큰 영향을 주는 것을 확인하였다. 초발수 특성이 요구되는 실제 응용을 위해서는 액적의 이동에 필요한 에너지를 최소화하기 위하여 접촉각을 극대화하고 동시에 접촉각 이력을 최소화하기 위한 표면 패턴 형상의 최적화가 요구됨을 확인하였다.

In this study, the effects of the contact angle (CA) and contact angle hyteresis (CAH) of planar and nano-patterned surfaces on rolling resistance of water droplet were studied. Based on the investigation on the CAH of water droplet on surfaces with various static wettability, it was found that the rolling resistance coefficient of water droplet is highly influenced by the surface pattern as well as CAH. The observed results suggest that the optimal surface patterns should be designed in order to minimize the rolling resistance of water droplet for the practical applications where superhydrophocitiy is required.

키워드

참고문헌

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