한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)

  • 제31권2호
  • /
  • Pages.171-178
  • /
  • 2014
  • /
  • 1225-9071(pISSN)
  • /
  • 2287-8769(eISSN)
한국정밀공학회 (Korean Society for Precision Engineering)
권호 표지
DOI QR코드

DOI QR Code

마이크로 기둥 구조가 있는 친수성/소수성 표면에서의 겉보기 접촉 각에 대한 연구

Apparent Contact Angle on the Hydrophilic/Hydrophobic Surfaces with Micro-pillars

  • 유동인 (포항공과대학교 기계공학과) ;
  • 도승우 (포항공과대학교 첨단원자력공학부) ;
  • 곽호재 (포항공과대학교 기계공학과) ;
  • 안호선 (인천대학교 기계시스템공학부) ;
  • 김무환 (포항공과대학교 첨단원자력공학부) ;
  • 박현선 (포항공과대학교 첨단원자력공학부)
  • Yu, Dong In (Department of Mechanical Engineering, POSTECH) ;
  • Doh, Seung Woo (Division of Advanced Nuclear Engineering, POSTECH) ;
  • Kwak, Ho Jae (Department of Mechanical Engineering, POSTECH) ;
  • Ahn, Ho Seon (Division of Mechanical System Engineering, Incheon National University) ;
  • Kim, Moo Hwan (Division of Advanced Nuclear Engineering, POSTECH) ;
  • Park, Hyun Sun (Division of Advanced Nuclear Engineering, POSTECH)
  • 투고 : 2013.12.09
  • 심사 : 2014.01.12
  • 발행 : 2014.02.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

In this study, the apparent contact angle on the hydrophilic/hydrophobic surfaces with micropillars was studied. The previous researches showed that the Wenzel equation and the Cassie-Baxter equation were thermodynamically derived for the rough hydrophilic/hydrophobic surfaces and generally referenced on the field of wetting phenomena. For the verification of both equations, the apparent contact angle on the hydrophilic/hydrophobic surfaces with micro-pillars was measured. In the comparison between the measured and estimated apparent contact angles with the equations, the differences between the apparent contact angles were analyzed. Conclusively, the available range and limitation of theoretical equations were investigated and further researches about the apparent contact angle on the rough surfaces were proposed.

키워드

참고문헌

  1. Wenzel, R. N., "Surface Roughness and Contact Angle," Journal of Physical Chemistry, Vol. 53, No. 9, pp. 1466-1467, 1949. https://doi.org/10.1021/j150474a015
  2. Cassie, A. and Baxter, S., "Wettability of Porous Surfaces," Transaction of the Faraday Society, Vol. 30, pp. 546-551, 1944.
  3. Extrand, C. W., "Contact Angle and Hysteresis on Surfaces with Chemically Heterogeneous Islands," Langmuir, Vol. 19, No. 9, pp. 3793-3796, 2003. https://doi.org/10.1021/la0268350
  4. Gao, L. and McCarthy, T. J., "How Wenzel and Cassie Were Wrong," Langmuir, Vol. 23, No. 7, pp. 3762-3765, 2007. https://doi.org/10.1021/la062634a
  5. Kwon, Y., Choi, S., Anantharaju, N., Lee, J., Panchangnula, M. V., and Patankar, N. A., "Is the Cassie-Baxter formular Relevant?" Langmuir, Vol. 22, No. 22, pp. 17528-17531, 2010.
  6. Caray, V. P., "Liquid-Vapor Phase Change Phenomena," Tayler & Francis, pp. 57-61, 1992.
  7. Bico, J., Thiele, U., and Quere, D., "Wetting of textured surfaces," Colloids and Surfaces A, Vol. 206, No. 1-3, pp. 41-46, 2002. https://doi.org/10.1016/S0927-7757(02)00061-4
  8. Park, C. I., Jeong, H. E., Lee, S. H., Cho, H. S., and Suh, K. Y., "Wetting Transition and Optimal Design for Microstructured Surfaces with Hydrophobic and Hydrophilic Materials," Journal of Colloid and Interface Science, Vol. 336, No. 1, pp. 298-303, 2009. https://doi.org/10.1016/j.jcis.2009.04.022
  9. Gibbs, J. W., "Scientific Reports," Longmans, Green and Company, pp. 139-151, 1906.
  10. Ishion, C. and Okumura, K., "Wetting Transitions on Textured Hydrophilic Surfaces," European Physical Journal E, Vol. 25, No. 4, pp. 415-424, 2008. https://doi.org/10.1140/epje/i2007-10308-y
  11. Kang, H. C. and Jacobi, A. M., "Equilibrium Contact Angles of Liquid Droplets on Ideal Rough Solids," Langmuir, Vol. 27, No. 24, pp. 14910-14918, 2011. https://doi.org/10.1021/la2031413
  12. Jung, Y. C. and Bhushan, B., "Wetting Transition of Water Droplets on Superhydrophobic Patterned Surfaces," Scripta Materialia, Vol. 57, No. 12, pp. 1057-1060, 2007. https://doi.org/10.1016/j.scriptamat.2007.09.004

피인용 문헌

  1. Thermoplastic Fusion Bonding of UV Modified PMMA Microfluidic Devices vol.31, pp.5, 2014, https://doi.org/10.7736/KSPE.2014.31.5.441
  2. Investigation of Wetting Characteristics of Polymer Surfaces according to Electron Beam Irradiation vol.33, pp.1, 2016, https://doi.org/10.7736/KSPE.2016.33.1.45