Phase Field Modeling of Hysteresis in Sessile Drops Export

@article{citeulike:5998160, abstract = {We propose a novel approach to describe wetting of plane solid surfaces by liquid drops. A two-dimensional nonconserved phase field variable is employed to distinguish between wetted and nonwetted regions on the surface. The imbalance in the Young's force provides for the exchange of relative stability of the two phases. The three-phase contact line tension arises from the gradient energy and contact angle hysteresis from the kinetic coefficient. Using this theory, we discuss contact angle hysteresis on chemically heterogeneous surfaces. We show significant departure from the classical Cassie theory, which is attributed to defect pinning of the continuous triple line.}, author = {Vedantam, Srikanth and Panchagnula, Mahesh V.}, citeulike-article-id = {5998160}, citeulike-linkout-0 = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000099000017176102000001&idtype=cvips&gifs=yes}, citeulike-linkout-1 = {http://link.aps.org/abstract/PRL/v99/e176102}, citeulike-linkout-2 = {http://dx.doi.org/10.1103/PhysRevLett.99.176102}, doi = {10.1103/PhysRevLett.99.176102}, journal = {Physical Review Letters}, keywords = {hysteresis, phase\_field, simulation}, number = {17}, pages = {176102+}, posted-at = {2009-10-23 16:48:26}, priority = {2}, publisher = {APS}, title = {Phase Field Modeling of Hysteresis in Sessile Drops}, url = {http://dx.doi.org/10.1103/PhysRevLett.99.176102}, volume = {99}, year = {2007} }

TY - JOUR ID - citeulike:5998160 L3 - citeulike-article-id:5998160 N2 - We propose a novel approach to describe wetting of plane solid surfaces by liquid drops. A two-dimensional nonconserved phase field variable is employed to distinguish between wetted and nonwetted regions on the surface. The imbalance in the Young's force provides for the exchange of relative stability of the two phases. The three-phase contact line tension arises from the gradient energy and contact angle hysteresis from the kinetic coefficient. Using this theory, we discuss contact angle hysteresis on chemically heterogeneous surfaces. We show significant departure from the classical Cassie theory, which is attributed to defect pinning of the continuous triple line. IS - 17 JF - Physical Review Letters TI - Phase Field Modeling of Hysteresis in Sessile Drops PB - APS VL - 99 SP - 176102 KW - hysteresis KW - phase_field KW - simulation AU - Vedantam, Srikanth AU - Panchagnula, Mahesh PY - 2007/// UR - http://dx.doi.org/10.1103/PhysRevLett.99.176102 ER -