Abstract
| Original language | English |
|---|---|
| Article number | 135001 |
| Journal | Journal of Physics: Condensed Matter |
| Volume | 28 |
| Issue number | 13 |
| DOIs | |
| Publication status | Published - 2016 |
| MoE publication type | A1 Journal article-refereed |
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Keywords
- surface tension
- surface energy
- Young's equation
- pinning
- wetting
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Young's equation revisited. / Makkonen, Lasse.
In: Journal of Physics: Condensed Matter, Vol. 28, No. 13, 135001, 2016.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Young's equation revisited
AU - Makkonen, Lasse
PY - 2016
Y1 - 2016
N2 - Young's construction for a contact angle at a three-phase intersection forms the basis of all fields of science that involve wetting and capillary action. We find compelling evidence from recent experimental results on the deformation of a soft solid at the contact line, and displacement of an elastic wire immersed in a liquid, that Young's equation can only be interpreted by surface energies, and not as a balance of surface tensions. It follows that the a priori variable in finding equilibrium is not the position of the contact line, but the contact angle. This finding provides the explanation for the pinning of a contact line.
AB - Young's construction for a contact angle at a three-phase intersection forms the basis of all fields of science that involve wetting and capillary action. We find compelling evidence from recent experimental results on the deformation of a soft solid at the contact line, and displacement of an elastic wire immersed in a liquid, that Young's equation can only be interpreted by surface energies, and not as a balance of surface tensions. It follows that the a priori variable in finding equilibrium is not the position of the contact line, but the contact angle. This finding provides the explanation for the pinning of a contact line.
KW - surface tension
KW - surface energy
KW - Young's equation
KW - pinning
KW - wetting
U2 - 10.1088/0953-8984/28/13/135001
DO - 10.1088/0953-8984/28/13/135001
M3 - Article
VL - 28
JO - Journal of Physics: Condensed Matter
JF - Journal of Physics: Condensed Matter
SN - 0953-8984
IS - 13
M1 - 135001
ER -