Low-bond axisymmetric drop shape analysis for surface tension and contact angle measurements of sessile drops
نویسندگان
چکیده
منابع مشابه
Assessing the accuracy of contact angle measurements for sessile drops on liquid-repellent surfaces.
Gravity-induced sagging can amplify variations in goniometric measurements of the contact angles of sessile drops on super-liquid-repellent surfaces. The very large value of the effective contact angle leads to increased optical noise in the drop profile near the solid-liquid free surface and the progressive failure of simple geometric approximations. We demonstrate a systematic approach to det...
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The surface tension of 1,2-dimethyl-3-N-hexadecyl imidazolium tetrafluoroborate (Im BF4) as a function of concentration has been measured. Between 10−5 and 4× 10−4 mol/L, the surface tension decreases with increasing imidazolium concentration. Aggregate formation appears to occur at a concentration near 4× 10−4 mol/L for temperatures between 50 and 75 ◦C. Small angle neutron scattering measurem...
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ژورنال
عنوان ژورنال: Colloids and Surfaces A: Physicochemical and Engineering Aspects
سال: 2010
ISSN: 0927-7757
DOI: 10.1016/j.colsurfa.2010.04.040