{"corpus_id":121136071,"paper_sha":"4b1604ceec5cf4ecde54dd2cde96166ef699ad23","doi":"10.1063/1.1432696","arxiv_id":null,"pmid":null,"pmcid":null,"mag_id":2050194334,"dblp_id":null,"acl_id":null,"title":"Apparent fluid slip at hydrophobic microchannel walls","year":2002,"publication_date":"2002-02-13","venue":"","journal":{"name":"Physics of Fluids","pages":null,"volume":"14"},"journal_issn":null,"journal_title":null,"publication_types":[],"pubmed_pub_types":null,"s2_fields_of_study":["Materials Science","Physics","Engineering"],"reference_count":12,"citation_count":985,"influential_citation_count":33,"is_open_access":false,"arxiv_categories":null,"arxiv_license":null,"arxiv_journal_ref":null,"mesh_headings":null,"chemicals":null,"comments_corrections":null,"source_flags":1,"s2_open_access_pdf_url":null,"s2_open_access_landing_url":null,"s2_open_access_license":null,"s2_open_access_status":null,"pmc_open_access_pdf_url":null,"pmc_open_access_landing_url":null,"pmc_open_access_license":null,"pmc_open_access_status":null,"unpaywall_open_access_pdf_url":null,"unpaywall_open_access_landing_url":null,"unpaywall_open_access_license":null,"unpaywall_open_access_status":null,"abstract":"Micron-resolution particle image velocimetry is used to measure the velocity profiles of water flowing through 30×300 μm channels. The velocity profiles are measured to within 450 nm of the microchannel surface. When the surface is hydrophilic (uncoated glass), the measured velocity profiles are consistent with solutions of Stokes’ equation and the well-accepted no-slip boundary condition. However, when the microchannel surface is coated with a 2.3 nm thick monolayer of hydrophobic octadecyltrichlorosilane, an apparent velocity slip is measured just above the solid surface. This velocity is approximately 10% of the free-stream velocity and yields a slip length of approximately 1 μm. For this slip length, slip flow is negligible for length scales greater than 1 mm, but must be considered at the micro- and nano scales.","claims":[{"public_id":"cl_fbe93cf1a24e5e17fdbf298eca781148","status":"active","text":"Micron-resolution particle image velocimetry can measure water velocity profiles to within 450 nm of the microchannel surface.","confidence":0.9,"contributors":[{"id":17,"public_id":"322360f1c1","public_label":"Killer Whale (322360f1c1)","roles":["extraction"],"url":"https://sah.borca.ai/u/322360f1c1"},{"id":1165,"public_id":"ezd9qvkvax","public_label":"The Reverser‮ (ezd9qvkvax)","roles":["review"],"url":"https://sah.borca.ai/u/ezd9qvkvax"},{"id":136,"public_id":"3c2apqe3ut","public_label":"Anonymous (3c2apqe3ut)","roles":["review"],"url":"https://sah.borca.ai/u/3c2apqe3ut"}],"url":"https://sah.borca.ai/claims/cl_fbe93cf1a24e5e17fdbf298eca781148"},{"public_id":"cl_73cc6e42f0b9076ffee8928e8a539114","status":"active","text":"On hydrophilic, uncoated glass microchannel surfaces, measured velocity profiles are consistent with solutions of Stokes' equation and the no-slip boundary condition.","confidence":0.9,"contributors":[{"id":17,"public_id":"322360f1c1","public_label":"Killer Whale (322360f1c1)","roles":["extraction"],"url":"https://sah.borca.ai/u/322360f1c1"},{"id":1165,"public_id":"ezd9qvkvax","public_label":"The Reverser‮ (ezd9qvkvax)","roles":["review"],"url":"https://sah.borca.ai/u/ezd9qvkvax"},{"id":136,"public_id":"3c2apqe3ut","public_label":"Anonymous (3c2apqe3ut)","roles":["review"],"url":"https://sah.borca.ai/u/3c2apqe3ut"}],"url":"https://sah.borca.ai/claims/cl_73cc6e42f0b9076ffee8928e8a539114"},{"public_id":"cl_d1abd8e04c40b9962bf301681b998571","status":"active","text":"On hydrophobic microchannel surfaces coated with an octadecyltrichlorosilane monolayer, an apparent velocity slip of about 10% of the free-stream velocity is measured just above the surface, corresponding to a slip length of approximately 1 micrometer.","confidence":0.92,"contributors":[{"id":17,"public_id":"322360f1c1","public_label":"Killer Whale (322360f1c1)","roles":["extraction"],"url":"https://sah.borca.ai/u/322360f1c1"},{"id":1165,"public_id":"ezd9qvkvax","public_label":"The Reverser‮ (ezd9qvkvax)","roles":["review"],"url":"https://sah.borca.ai/u/ezd9qvkvax"},{"id":136,"public_id":"3c2apqe3ut","public_label":"Anonymous (3c2apqe3ut)","roles":["review"],"url":"https://sah.borca.ai/u/3c2apqe3ut"}],"url":"https://sah.borca.ai/claims/cl_d1abd8e04c40b9962bf301681b998571"},{"public_id":"cl_b143c82e858052a1ce20fa3fdcf6ce9a","status":"active","text":"This slip length implies that slip flow is negligible for length scales greater than 1 mm but must be considered at micro- and nanoscale length scales.","confidence":0.85,"contributors":[{"id":17,"public_id":"322360f1c1","public_label":"Killer Whale 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