Effect of Three-Phase Contact Line Topology on Dynamic Contact Angles on Heterogeneous Surfaces Export

@article{citeulike:5300805, abstract = {PMID: 17935366 CassieBaxter theory has traditionally been used to study liquid drops in contact with microstructured surfaces. The CassieBaxter theory arises from a minimization of the global Gibbs free energy of the system but does not account for the topology of the three-phase contact line. We experimentally compare two situations differing only in the microstructure of the roughness, which causes differences in contact line topology. We report that the contact angle is independent of area void fraction for surfaces with microcavities, which correspond to situations when the advancing contact line is continuous. This result is in contrast with CassieBaxter theory, which uses area void fraction as the determining parameter, regardless of the type of roughness.}, author = {Anantharaju, Neeharika and Panchagnula, Mahesh V. and Vedantam, Srikanth and Neti, Sudhakar and Tatic-Lucic, Svetlana}, citeulike-article-id = {5300805}, citeulike-linkout-0 = {http://dx.doi.org/10.1021/la702023e}, citeulike-linkout-1 = {http://pubs.acs.org/doi/abs/10.1021/la702023e}, day = {1}, doi = {10.1021/la702023e}, journal = {Langmuir}, keywords = {cassie, simulation, surfaceevolver, wetting-theory}, month = {November}, number = {23}, pages = {11673--11676}, posted-at = {2009-07-30 09:12:03}, priority = {2}, title = {Effect of Three-Phase Contact Line Topology on Dynamic Contact Angles on Heterogeneous Surfaces}, url = {http://dx.doi.org/10.1021/la702023e}, volume = {23}, year = {2007} }

TY - JOUR ID - citeulike:5300805 L3 - citeulike-article-id:5300805 N2 - PMID: 17935366 CassieBaxter theory has traditionally been used to study liquid drops in contact with microstructured surfaces. The CassieBaxter theory arises from a minimization of the global Gibbs free energy of the system but does not account for the topology of the three-phase contact line. We experimentally compare two situations differing only in the microstructure of the roughness, which causes differences in contact line topology. We report that the contact angle is independent of area void fraction for surfaces with microcavities, which correspond to situations when the advancing contact line is continuous. This result is in contrast with CassieBaxter theory, which uses area void fraction as the determining parameter, regardless of the type of roughness. IS - 23 JF - Langmuir EP - 11676 TI - Effect of Three-Phase Contact Line Topology on Dynamic Contact Angles on Heterogeneous Surfaces VL - 23 SP - 11673 KW - cassie KW - simulation KW - surfaceevolver KW - wetting-theory AU - Anantharaju, Neeharika AU - Panchagnula, Mahesh AU - Vedantam, Srikanth AU - Neti, Sudhakar AU - Tatic-Lucic, Svetlana PY - 2007/11/01/ UR - http://dx.doi.org/10.1021/la702023e ER -