{"id":3663,"date":"2022-12-07T09:01:58","date_gmt":"2022-12-07T08:01:58","guid":{"rendered":"https:\/\/equipes.lps.u-psud.fr\/mmoi\/?p=3663"},"modified":"2022-12-07T09:02:58","modified_gmt":"2022-12-07T08:02:58","slug":"publication-elastohydrodynamic-relaxation-of-soft-and-deformable-microchannels","status":"publish","type":"post","link":"https:\/\/equipes.lps.u-psud.fr\/mmoi\/publication-elastohydrodynamic-relaxation-of-soft-and-deformable-microchannels\/","title":{"rendered":"Publication: Elastohydrodynamic Relaxation of Soft and Deformable Microchannels"},"content":{"rendered":"\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/equipes.lps.u-psud.fr\/mmoi\/wp-content\/uploads\/sites\/6\/2022\/12\/elastohydrydynamic_relaxation.png\" alt=\"\" class=\"wp-image-3664\" width=\"424\" height=\"273\" srcset=\"https:\/\/equipes.lps.u-psud.fr\/mmoi\/wp-content\/uploads\/sites\/6\/2022\/12\/elastohydrydynamic_relaxation.png 500w, https:\/\/equipes.lps.u-psud.fr\/mmoi\/wp-content\/uploads\/sites\/6\/2022\/12\/elastohydrydynamic_relaxation-300x193.png 300w\" sizes=\"auto, (max-width: 424px) 100vw, 424px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Hydrodynamic flows in compliant channels are of great interest in physiology and microfluidics. In these situations, elastohydrodynamic coupling leads to (i)&nbsp;a nonlinear pressure-vs-flow-rate relation, strongly affecting the hydraulic resistance; and (ii), because of the compliance-enabled volume storage, a finite relaxation time under a stepwise change in pressure. This latter effect remains relatively unexplored, even while the timescale can vary over a decade in typical situations. In this study we provide time-resolved measurements of the relaxation dynamics for thin and soft, rectangular microfluidic channels. We describe our data using a perturbative lubrication approximation of the Stokes equation coupled to linear elasticity, while taking into account the effect of compliance and resistance of the entrance. The modeling allows us to completely describe all of the experimental results. Our Letter is relevant for any microfluidic scenario wherein a time-dependent driving is applied and provides a first step in the dynamical description of compliant channel networks.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DOI: <a href=\"https:\/\/doi-org\/10.1039\/D2SM00532H\">https:\/\/doi-org\/10.1103\/PhysRevLett.129.204501<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Arxiv: <a href=\"https:\/\/hal.archives-ouvertes.fr\/hal-03719718\">https:\/\/hal.archives-ouvertes.fr\/hal-03719718<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hydrodynamic flows in compliant channels are of great interest in physiology and microfluidics. In these situations, elastohydrodynamic coupling leads to (i)&nbsp;a nonlinear pressure-vs-flow-rate relation, strongly affecting the hydraulic resistance; and &#8230;<\/p>\n","protected":false},"author":7,"featured_media":3664,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3663","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hydrodynamic flows in compliant channels are of great interest in physiology and microfluidics. In these situations, elastohydrodynamic coupling leads to (i) a nonlinear pressure-vs-flow-rate relation, strongly affecting the hydraulic resistance; and (ii), because of the compliance-enabled volume storage, a finite relaxation time under a stepwise change in pressure. This latter effect remains relatively unexplored, even while\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"christophe.poulard\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/equipes.lps.u-psud.fr\/mmoi\/publication-elastohydrodynamic-relaxation-of-soft-and-deformable-microchannels\/\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.4\" \/>\n\t\t<meta property=\"og:locale\" content=\"fr_FR\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Mati\u00e8re Molle aux interfaces \/ soft interfaces - Mati\u00e8re Molle aux interfaces \/ sooft interfaces LPS\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Publication: Elastohydrodynamic Relaxation of Soft and Deformable Microchannels - Mati\u00e8re Molle aux interfaces \/ soft interfaces\" \/>\n\t\t<meta property=\"og:description\" content=\"Hydrodynamic flows in compliant channels are of great interest in physiology and microfluidics. In these situations, elastohydrodynamic coupling leads to (i) a nonlinear pressure-vs-flow-rate relation, strongly affecting the hydraulic resistance; and (ii), because of the compliance-enabled volume storage, a finite relaxation time under a stepwise change in pressure. This latter effect remains relatively unexplored, even while\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/equipes.lps.u-psud.fr\/mmoi\/publication-elastohydrodynamic-relaxation-of-soft-and-deformable-microchannels\/\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/equipes.lps.u-psud.fr\/mmoi\/wp-content\/uploads\/sites\/6\/2021\/06\/cropped-MMOI-300x122-1.png\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/equipes.lps.u-psud.fr\/mmoi\/wp-content\/uploads\/sites\/6\/2021\/06\/cropped-MMOI-300x122-1.png\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2022-12-07T08:01:58+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2022-12-07T08:02:58+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary\" \/>\n\t\t<meta name=\"twitter:site\" content=\"@MMOI_LPS\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Publication: Elastohydrodynamic Relaxation of Soft and Deformable Microchannels - Mati\u00e8re Molle aux interfaces \/ soft interfaces\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Hydrodynamic flows in compliant channels are of great interest in physiology and microfluidics. In these situations, elastohydrodynamic coupling leads to (i) a nonlinear pressure-vs-flow-rate relation, strongly affecting the hydraulic resistance; and (ii), because of the compliance-enabled volume storage, a finite relaxation time under a stepwise change in pressure. 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In these situations, elastohydrodynamic coupling leads to (i) a nonlinear pressure-vs-flow-rate relation, strongly affecting the hydraulic resistance; and (ii), because of the compliance-enabled volume storage, a finite relaxation time under a stepwise change in pressure. This latter effect remains relatively unexplored, even while","twitter:creator":"@MMOI_LPS","twitter:image":"https:\/\/equipes.lps.u-psud.fr\/mmoi\/wp-content\/uploads\/sites\/6\/2021\/06\/cropped-MMOI-300x122-1.png"},"aioseo_meta_data":{"post_id":"3663","title":null,"description":null,"keywords":[],"keyphrases":{"focus":[],"additional":[]},"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":"","og_custom_url":null,"og_article_section":null,"og_article_tags":[],"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"BlogPosting","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":"-1","robots_max_videopreview":"-1","robots_max_imagepreview":"large","priority":null,"frequency":"default","local_seo":null,"breadcrumb_settings":null,"limit_modified_date":false,"ai":null,"created":"2022-12-07 08:01:02","updated":"2026-08-31 09:57:58","seo_analyzer_scan_date":null,"focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/equipes.lps.u-psud.fr\/mmoi\/\" title=\"Accueil\">Accueil<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">\u00bb<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/equipes.lps.u-psud.fr\/mmoi\/category\/news\/\" title=\"News\">News<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">\u00bb<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tPublication: Elastohydrodynamic Relaxation of Soft and Deformable Microchannels\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Accueil","link":"https:\/\/equipes.lps.u-psud.fr\/mmoi\/"},{"label":"News","link":"https:\/\/equipes.lps.u-psud.fr\/mmoi\/category\/news\/"},{"label":"Publication: Elastohydrodynamic Relaxation of Soft and Deformable Microchannels","link":"https:\/\/equipes.lps.u-psud.fr\/mmoi\/publication-elastohydrodynamic-relaxation-of-soft-and-deformable-microchannels\/"}],"_links":{"self":[{"href":"https:\/\/equipes.lps.u-psud.fr\/mmoi\/wp-json\/wp\/v2\/posts\/3663","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/equipes.lps.u-psud.fr\/mmoi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/equipes.lps.u-psud.fr\/mmoi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/equipes.lps.u-psud.fr\/mmoi\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/equipes.lps.u-psud.fr\/mmoi\/wp-json\/wp\/v2\/comments?post=3663"}],"version-history":[{"count":2,"href":"https:\/\/equipes.lps.u-psud.fr\/mmoi\/wp-json\/wp\/v2\/posts\/3663\/revisions"}],"predecessor-version":[{"id":3666,"href":"https:\/\/equipes.lps.u-psud.fr\/mmoi\/wp-json\/wp\/v2\/posts\/3663\/revisions\/3666"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/equipes.lps.u-psud.fr\/mmoi\/wp-json\/wp\/v2\/media\/3664"}],"wp:attachment":[{"href":"https:\/\/equipes.lps.u-psud.fr\/mmoi\/wp-json\/wp\/v2\/media?parent=3663"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/equipes.lps.u-psud.fr\/mmoi\/wp-json\/wp\/v2\/categories?post=3663"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/equipes.lps.u-psud.fr\/mmoi\/wp-json\/wp\/v2\/tags?post=3663"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}