Droplet contact angle behavior on a hybrid surface with hydrophobic and hydrophilic properties Academic Article

abstract

• A hybrid surface consisting of an array of hydrophobic and hydrophilic sites was designed and fabricated in an effort to better understand the effects of microscale surface features and chemistry on wettability. A model based on energy minimization was developed to design and predict the wettability of hybrid surfaces. Measured advancing, receding, and equilibrium contact angles fit the proposed model well. Experiments show that a higher degree of hydrophobicity results in higher contact angles and that contact angle hysteresis increases with decreasing micropillar spacing (b/a). Moreover, measured roll-off angle as an indicator of droplet shedding, decreases with b/a. 2012 American Institute of Physics.

authors

• Alvarado, Jorge
• YAO, CHUN-WEI

published proceedings

• APPLIED PHYSICS LETTERS

author list (cited authors)

• Yao, C. W., Garvin, T. P., Alvarado, J. L., Jacobi, A. M., Jones, B. G., & Marsh, C. P.

citation count

• 37

complete list of authors

• Yao, CW||Garvin, TP||Alvarado, JL||Jacobi, AM||Jones, BG||Marsh, CP

publication date

• September 2012

publisher

• AIP Publishing  Publisher

published in

• Applied Physics Letters  Journal

keywords

• 40 Engineering

Digital Object Identifier (DOI)

• 10.1063/1.4752470

start page

• 111605

end page

• 111605

volume

• 101

issue

• 11

URL

• http://dx.doi.org/10.1063/1.4752470