{"id":4771,"date":"2014-01-01T00:00:00","date_gmt":"2014-01-01T08:00:00","guid":{"rendered":"https:\/\/wpdev.hmc.edu\/physics\/2014\/01\/01\/quantized-contact-angles-in-the-dewetting-of-a-structured-liquid\/"},"modified":"2014-01-01T00:00:00","modified_gmt":"2014-01-01T08:00:00","slug":"quantized-contact-angles-in-the-dewetting-of-a-structured-liquid","status":"publish","type":"physics_publications","link":"https:\/\/www.hmc.edu\/physics\/research\/publications\/quantized-contact-angles-in-the-dewetting-of-a-structured-liquid\/","title":{"rendered":"Quantized Contact Angles in the Dewetting of a Structured Liquid"},"content":{"rendered":"\n<p id=\"authors\"><span class=\"facauthor\">Mark Ilton<\/span>, Pawel Stasiak, Mark W. Matsen, and Kari Dalnoki-Veress<\/p>\n\n\n\n<p id=\"doc-link\"><a href=\"https:\/\/www.hmc.edu\/physics\/wp-content\/uploads\/sites\/22\/2023\/02\/pub-123.pdf\">Quantized Contact Angles in the Dewetting of a Structured Liquid (PDF)<\/a><\/p>\n\n\n\n<p id=\"journal\"><span class=\"journal-title\">Physical Review Letters<\/span> <strong data-vol=\"112\">112<\/strong> <span id=\"journal-year\">(2014)<\/span> <span id=\"journal-pages\" data-pages=\"68303\">68303<\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Abstract<\/h2>\n\n\n\n<p>We investigate the dewetting of a disordered melt of diblock copolymer from an ordered residual wetting layer. In contrast to simple liquids where the wetting layer has a fixed thickness and the droplets exhibit a single unique contact angle with the substrate, we find that structured liquids of diblock copolymer exhibit a discrete series of wetting layer thicknesses each producing a different contact angle. These quantized contact angles arise because the substrate and air surfaces each induce a gradient of lamellar order in the wetting layer. The interaction between the two surface profiles creates an effective interface potential that oscillates with film thickness, thus, producing a sequence of local minimums. The wetting layer thicknesses and corresponding contact angles are a direct measure of the positions and depths of these minimums Self-consistent field theory is shown to provide qualitative agreement with the experiment.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mark Ilton, Pawel Stasiak, Mark W. Matsen, and Kari Dalnoki-Veress Quantized Contact Angles in the Dewetting of a Structured Liquid [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"template":"","publication_author":[19],"class_list":["post-4771","physics_publications","type-physics_publications","status-publish","hentry","publication_author-ilton"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.hmc.edu\/physics\/wp-json\/wp\/v2\/physics_publications\/4771","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hmc.edu\/physics\/wp-json\/wp\/v2\/physics_publications"}],"about":[{"href":"https:\/\/www.hmc.edu\/physics\/wp-json\/wp\/v2\/types\/physics_publications"}],"author":[{"embeddable":true,"href":"https:\/\/www.hmc.edu\/physics\/wp-json\/wp\/v2\/users\/1"}],"wp:attachment":[{"href":"https:\/\/www.hmc.edu\/physics\/wp-json\/wp\/v2\/media?parent=4771"}],"wp:term":[{"taxonomy":"publication_author","embeddable":true,"href":"https:\/\/www.hmc.edu\/physics\/wp-json\/wp\/v2\/publication_author?post=4771"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}