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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Construction of a simple balance for determination of the surface tension of liquids

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Author(s):
T.O. Reis [1] ; E.C. Ziemath [2] ; G.S. Oliveira [3] ; F.L. Leite [4]
Total Authors: 4
Affiliation:
[1] Universidade Federal de São Carlos. Departamento de Física, Química e Matemática. Grupo de Pesquisa em Nanoneurobiofísica - Brasil
[2] Universidade Estadual Paulista “Júlio de Mesquita Filho”. Departamento de Física - Brasil
[3] Universidade Federal de São Carlos. Departamento de Física, Química e Matemática. Grupo de Pesquisa em Nanoneurobiofísica - Brasil
[4] Universidade Federal de São Carlos. Departamento de Física, Química e Matemática. Grupo de Pesquisa em Nanoneurobiofísica - Brasil
Total Affiliations: 4
Document type: Journal article
Source: Revista Brasileira de Ensino de Física; v. 37, n. 1 2015-03-12.
Abstract

In the present work, it is suggested the construction of a balance using low-cost materials in order to determine surface tension of liquids. The reliability of the measurements was confirmed by comparing these results with those reported in the literature using capillary rise method for simple liquids. In the proposed method, the systematic errors from the obtained results obtained with this device are reduced considerably. The principle of the device’s operation consists of measuring the force required to remove/detach a glass slide partially immersed in a liquid. The values of surface tension are calculated based on concepts of moment of a force (torque) and considering intermolecular interactions between glass and liquid surface. (AU)

FAPESP's process: 13/09746-5 - DEVELOPMENT OF NANOBISENSORS USING ADVANCED COMPUTATIONAL TECHNIQUES
Grantee:Guedmiller Souza de Oliveira
Support Opportunities: Scholarships in Brazil - Post-Doctoral