Simple measurement of surface free energy using a web cam

Simple measurement of surface free energy using a web cam

In this paper we describe a simple and pedagogical experiment to measure surface free energy (SFE), which is a mainstream subject to teach undergraduate and graduate level Physics science. Beyond this, the advantage of this work relies on the simplicity of the materials used, namely non-harmful and low cost products such as water, glycerol, ethylene glycol and propanol, offering a useful pedagogical opportunity to discuss basic but relevant concepts regarding surface science phenomena. As example, contact angle measurements were used to estimate SFE and the wetting behavior of distinct solid surfaces such as glass and polytetrafluoroethylene (PTFE, Teflon®).

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Auteurs principaux: Vicente,C.M.S, André,P.S., Ferreira,R.A.S.
Format: Digital revista
Langue:English
Publié: Sociedade Brasileira de Física 2012
Accès en ligne:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-11172012000300012
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spelling oai:scielo:S1806-111720120003000122012-12-04Simple measurement of surface free energy using a web camVicente,C.M.SAndré,P.S.Ferreira,R.A.S. pedagogical practices surface free energy contact angle In this paper we describe a simple and pedagogical experiment to measure surface free energy (SFE), which is a mainstream subject to teach undergraduate and graduate level Physics science. Beyond this, the advantage of this work relies on the simplicity of the materials used, namely non-harmful and low cost products such as water, glycerol, ethylene glycol and propanol, offering a useful pedagogical opportunity to discuss basic but relevant concepts regarding surface science phenomena. As example, contact angle measurements were used to estimate SFE and the wetting behavior of distinct solid surfaces such as glass and polytetrafluoroethylene (PTFE, Teflon®).info:eu-repo/semantics/openAccessSociedade Brasileira de FísicaRevista Brasileira de Ensino de Física v.34 n.3 20122012-09-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-11172012000300012en10.1590/S1806-11172012000300012
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country Brasil
countrycode BR
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libraryname SciELO
language English
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author Vicente,C.M.S
André,P.S.
Ferreira,R.A.S.
spellingShingle Vicente,C.M.S
André,P.S.
Ferreira,R.A.S.
Simple measurement of surface free energy using a web cam
author_facet Vicente,C.M.S
André,P.S.
Ferreira,R.A.S.
author_sort Vicente,C.M.S
title Simple measurement of surface free energy using a web cam
title_short Simple measurement of surface free energy using a web cam
title_full Simple measurement of surface free energy using a web cam
title_fullStr Simple measurement of surface free energy using a web cam
title_full_unstemmed Simple measurement of surface free energy using a web cam
title_sort simple measurement of surface free energy using a web cam
description In this paper we describe a simple and pedagogical experiment to measure surface free energy (SFE), which is a mainstream subject to teach undergraduate and graduate level Physics science. Beyond this, the advantage of this work relies on the simplicity of the materials used, namely non-harmful and low cost products such as water, glycerol, ethylene glycol and propanol, offering a useful pedagogical opportunity to discuss basic but relevant concepts regarding surface science phenomena. As example, contact angle measurements were used to estimate SFE and the wetting behavior of distinct solid surfaces such as glass and polytetrafluoroethylene (PTFE, Teflon®).
publisher Sociedade Brasileira de Física
publishDate 2012
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-11172012000300012
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