{"id":1540,"date":"2022-01-22T18:49:54","date_gmt":"2022-01-22T17:49:54","guid":{"rendered":"https:\/\/iop.fnwi.uva.nl\/scm\/wordpress_test\/?p=1540"},"modified":"2026-10-12T21:06:43","modified_gmt":"2026-10-12T20:06:43","slug":"capillary-friction","status":"publish","type":"post","link":"https:\/\/iop.fnwi.uva.nl\/scm\/index.php\/2022\/01\/22\/capillary-friction\/","title":{"rendered":"Capillary friction"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"1540\" class=\"elementor elementor-1540\" data-elementor-settings=\"[]\">\n\t\t\t\t\t\t\t<div class=\"elementor-section-wrap\">\n\t\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5d36cd4 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5d36cd4\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-5a9798c7\" data-id=\"5a9798c7\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4c241753 elementor-widget elementor-widget-text-editor\" data-id=\"4c241753\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.5.5 - 03-02-2022 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#818a91;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#818a91;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<div style=\"font-size:18px; line-height: 1.75; color: #43545a; font-weight: 400;\"><!-- INTRODUCTION -->\n<p style=\"margin-bottom: 18px;\">How does humidity influence friction between solid surfaces? One important mechanism is <span style=\"color: #10708a; font-weight: 600;\">capillary adhesion<\/span>, where tiny liquid bridges form between contacting surfaces and influence how strongly they stick together.<\/p>\n<p style=\"margin-bottom: 28px;\">While this phenomenon is relatively well understood for individual contact points, its behaviour at <span style=\"color: #10708a;\">multi-asperity interfaces<\/span> \u2014 where many microscopic surface features interact \u2014 remains challenging to predict. Our research investigates how these microscopic interactions influence friction at larger scales.<\/p>\n<!-- RESEARCH FOCUS -->\n<h3 style=\"color: #10708a; font-size: 22px; font-weight: 600; margin: 30px 0 16px;\">What are we investigating?<\/h3>\n<div style=\"background: #F3F7F8; border-radius: 8px; padding:18px 20px; margin-bottom: 28px;\">\n<div style=\"margin-bottom: 18px;\">\n<div style=\"color: #10708a; font-weight: 600; margin-bottom: 4px;\">01 \u00a0 From microscopic to macroscopic contacts<\/div>\n<div>Understanding how capillary adhesion scales from individual surface contacts to interfaces containing many microscopic contact points.<\/div>\n<\/div>\n<div style=\"border-top: 1px solid #DCE7EA; padding-top: 16px; margin-bottom: 18px;\">\n<div style=\"color: #10708a; font-weight: 600; margin-bottom: 4px;\">02 \u00a0 Friction in humid environments<\/div>\n<div>Performing silicon-on-silicon friction experiments to investigate how humidity and capillary forces influence sliding behaviour.<\/div>\n<\/div>\n<div style=\"border-top: 1px solid #DCE7EA; padding-top: 16px;\">\n<div style=\"color: #10708a; font-weight: 600; margin-bottom: 4px;\">03 \u00a0 Connecting surface structure to friction<\/div>\n<div>Combining atomic force microscopy (AFM) surface measurements with contact calculations to reveal the relationship between surface topography, adhesion and friction.<\/div>\n<\/div>\n<\/div>\n<!-- RESEARCH CHALLENGE -->\n<p style=\"margin-bottom: 28px; padding-left: 16px; border-left: 3px solid #10708A; color: #52666d;\"><em> By combining experiments and computational modelling, we aim to uncover how microscopic adhesion mechanisms govern friction across complex solid interfaces. <\/em><\/p>\n<!-- PUBLICATIONS --><!-- PUBLICATIONS -->\n<h3 style=\"color: #10708a; font-size: 22px; font-weight: 600; margin: 30px 0 14px;\">Explore the research<\/h3>\n<p style=\"margin-bottom: 18px; color: #43545a;\">Interested in the underlying science? Explore our related publications below.<\/p>\n<div style=\"display: flex; flex-direction: column; gap: 12px; margin-bottom: 20px;\"><!-- PAPER 1 --> <a style=\"display: block; padding: 15px 22px; background: #F3F7F8; border: 1px solid #E1E8EA; border-left: 3px solid #10708A; border-radius: 8px; text-decoration: none;\" href=\"https:\/\/doi.org\/10.1103\/PhysRevApplied.17.034034\" target=\"_blank\" rel=\"noopener noreferrer\"> <span style=\"display: block; font-size: 12px; color: #10708a; font-weight: 600; letter-spacing: 0.5px; margin-bottom: 8px;\"> PHYSICAL REVIEW APPLIED \u00b7 2022 <\/span> <span style=\"display: block; font-size: 15px; font-weight: 600; color: #263f47; line-height: 1.45; margin-bottom: 8px;\"> Contribution of Capillary Adhesion to Friction at Macroscopic Solid\u2013Solid Interfaces <\/span> <span style=\"display: block; font-size: 14px; color: #6b7c85; line-height: 1.6;\"> Feng-Chun Hsia, Chao-Chun Hsu, Liang Peng, Fiona M. Elam, Chen Xiao, Steve Franklin, Daniel Bonn &amp; Bart Weber <\/span> <span style=\"display: block; font-size: 13px; color: #10708a; font-weight: 600; margin-top: 12px;\"> Read publication \u2197 <\/span> <\/a> <!-- PAPER 2 --> <a style=\"display: block; padding: 15px 22px; background: #F3F7F8; border: 1px solid #E1E8EA; border-left: 3px solid #10708A; border-radius: 8px; text-decoration: none;\" href=\"https:\/\/doi.org\/10.1103\/PhysRevLett.129.256101\" target=\"_blank\" rel=\"noopener noreferrer\"> <span style=\"display: block; font-size: 12px; color: #10708a; font-weight: 600; letter-spacing: 0.5px; margin-bottom: 8px;\"> PHYSICAL REVIEW LETTERS \u00b7 2022 <\/span> <span style=\"display: block; font-size: 15px; font-weight: 600; color: #263f47; line-height: 1.45; margin-bottom: 8px;\"> Nonmonotonic Friction due to Water Capillary Adhesion and Hydrogen Bonding at Multiasperity Interfaces <\/span> <span style=\"display: block; font-size: 14px; color: #6b7c85; line-height: 1.6;\"> Liang Peng, Feng-Chun Hsia, Sander Woutersen, Mischa Bonn, Bart Weber &amp; Daniel Bonn <\/span> <span style=\"display: block; font-size: 13px; color: #10708a; font-weight: 600; margin-top: 12px;\"> Read publication \u2197 <\/span> <\/a> <!-- PAPER 3 --> <a style=\"display: block; padding: 15px 22px; background: #F3F7F8; border: 1px solid #E1E8EA; border-left: 3px solid #10708A; border-radius: 8px; text-decoration: none;\" href=\"https:\/\/doi.org\/10.1103\/PhysRevLett.134.176202\" target=\"_blank\" rel=\"noopener noreferrer\"> <span style=\"display: block; font-size: 12px; color: #10708a; font-weight: 600; letter-spacing: 0.5px; margin-bottom: 8px;\"> PHYSICAL REVIEW LETTERS \u00b7 2025 <\/span> <span style=\"display: block; font-size: 15px; font-weight: 600; color: #263f47; line-height: 1.45; margin-bottom: 8px;\"> Decrease of Static Friction Coefficient with Interface Growth from Single to Multiasperity Contact <\/span> <span style=\"display: block; font-size: 14px; color: #6b7c85; line-height: 1.6;\"> Liang Peng, Thibault Roch, Daniel Bonn &amp; Bart Weber <\/span> <span style=\"display: block; font-size: 13px; color: #10708a; font-weight: 600; margin-top: 12px;\"> Read publication \u2197 <\/span> <\/a><\/div>\n<!-- CONTACT -->\n<p style=\"font-size: 14px; color: #6b7c85; border-top: 1px solid #E1E8EA; padding-top: 16px; margin-bottom: 0;\">Research contact: Liang Peng \u00a0\u00b7\u00a0 <a style=\"color: #10708a; text-decoration: none;\" href=\"mailto:L.Peng@uva.nl\"> L.Peng@uva.nl <\/a><\/p>\n<\/div>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>How does humidity influence friction between solid surfaces? One important mechanism is capillary adhesion, where tiny liquid bridges form between contacting surfaces and influence how strongly they stick together. While this phenomenon is relatively well understood for individual contact points, its behaviour at multi-asperity interfaces \u2014 where many microscopic surface features interact \u2014 remains challenging [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1538,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[17],"tags":[],"_links":{"self":[{"href":"https:\/\/iop.fnwi.uva.nl\/scm\/index.php\/wp-json\/wp\/v2\/posts\/1540"}],"collection":[{"href":"https:\/\/iop.fnwi.uva.nl\/scm\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/iop.fnwi.uva.nl\/scm\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/iop.fnwi.uva.nl\/scm\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/iop.fnwi.uva.nl\/scm\/index.php\/wp-json\/wp\/v2\/comments?post=1540"}],"version-history":[{"count":4,"href":"https:\/\/iop.fnwi.uva.nl\/scm\/index.php\/wp-json\/wp\/v2\/posts\/1540\/revisions"}],"predecessor-version":[{"id":3991,"href":"https:\/\/iop.fnwi.uva.nl\/scm\/index.php\/wp-json\/wp\/v2\/posts\/1540\/revisions\/3991"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/iop.fnwi.uva.nl\/scm\/index.php\/wp-json\/wp\/v2\/media\/1538"}],"wp:attachment":[{"href":"https:\/\/iop.fnwi.uva.nl\/scm\/index.php\/wp-json\/wp\/v2\/media?parent=1540"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/iop.fnwi.uva.nl\/scm\/index.php\/wp-json\/wp\/v2\/categories?post=1540"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/iop.fnwi.uva.nl\/scm\/index.php\/wp-json\/wp\/v2\/tags?post=1540"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}