The effect of viscosity on the drop weight technique for the measurement of dynamic surface tension

Jho, C; Carreras, M

doi:10.1016/0021-9797(84)90141-3

Cited by 26 publications

(12 citation statements)

References 4 publications

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“…The surface tension for DW is estimated with the following equation [26]: where T (°C) is the water temperature. The surface tension for EG is estimated with the following equation [27]:…”

Section: Resultsmentioning

confidence: 99%

Tin nitride thin films fabricated by reactive radio frequency magnetron sputtering at various nitrogen gas ratios

Choi¹,

Kang²,

Park³

et al. 2014

Thin Solid Films

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“…The surface tension for DW is estimated with the following equation [26]: where T (°C) is the water temperature. The surface tension for EG is estimated with the following equation [27]:…”

Section: Resultsmentioning

confidence: 99%

Tin nitride thin films fabricated by reactive radio frequency magnetron sputtering at various nitrogen gas ratios

Choi¹,

Kang²,

Park³

et al. 2014

Thin Solid Films

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“…The surface tension of ethylene glycol at 20-170 • C were estimated using the following equation [8,10]:…”

Section: Methodsmentioning

confidence: 99%

Effects in Surface Free Energy of Sputter-Deposited VNx Films

Fan

Lee

2010

Journal of Adhesion Science and Technology

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Vanadium nitride (VN x ) thin films have attracted much attention for semiconductor integrated circuit (IC) packaging molding dies, and forming tools due to their excellent hardness and, thermal stability. VN x thin films with VN 0.45 , VN 0.83 , VN 1.22 , VN 1.73 , VN 2.06 were prepared using a radio frequency (RF) sputter technique. The experimental results showed that the contact angle at 20 • C increases with increasing nitrogen content of the VN x films, to 101.4 • corresponding to VN 1.73 and then decreased. In addition, the contact angles decreased with increasing surface temperature, because an increase of the surface temperature disrupts the hydrogen bonds between water and the films and the water gradually vaporizes. The total surface fee energy (SFE) at 20 • C decreased with nitrogen content of the VN x films to 29.8 mN/m (VN 1.73 ) and then increased. This is because a larger contact angle means weaker hydrogen bonding which results in a lower SFE. The polar SFE component had the same trend as the total SFE, but the dispersive SFE component had the opposite trend. The polar SFE component is also lower than the dispersive SFE component. This is because hydrogen bonds are polar. The total SFE, dispersive SFE and polar SFE of the VN x films all decrease with increasing surface temperature. This is because with increasing temperature, water evaporates from the surface, disrupting hydrogen bonds and hence increasing surface entropy. The film roughness has an obvious effect on the SFE and there is tendency for the SFE to increase with increasing film surface roughness. As a result the SFE and surface roughness can be expressed in terms of a simple ratio function.

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“…Only the surface tension of [C 4 -3-C 1 py][BF 4 ] is higher and its value corresponds to the surface tension of ethylene glycol and amounts 47.3 mN Á m À1 [24]. The surface tension value is affected by the cation and anion because they are present in the interface layer.…”

Section: Py][ntf 2 ] and 06% For [C 4 -4-c 1 Py][ntf 2 ]mentioning

confidence: 96%