Title:
CARRIER WITH ANISOTROPIC WETTING SURFACES
Document Type and Number:
WIPO Patent Application WO2007035501
Kind Code:
B1
Abstract:
A carrier with an anisotropic wetting surface including a substrate with a multiplicity of asymmetric substantially uniformly shaped asperities thereon. Each asperity has a first asperity rise angle and a second asperity rise angle relative to the substrate. The asperities are structured to present a desired retentive force ratio (fi/f2) greater or less than unity caused by asymmetry between the first asperity rise angle and the second asperity rise angle according to the formula: f3/f2 = sin(?3 + 1/2?T0)/sin(?2 + 1/2?T0) Entire surfaces or portions of surfaces of the carrier may be provided with the anisotropic wetting surfaces. The anisotropic wetting qualities may ensure that small droplets of liquid drain fully from the surface or, alternately, may ensure that droplets are retained in areas where they dry so that any contaminants are unlikely to cause harm.
Inventors:
EXTRAND CHARLES W (US)
WRIGHT MICHAEL (US)
WRIGHT MICHAEL (US)
Application Number:
PCT/US2006/036065
Publication Date:
May 31, 2007
Filing Date:
September 15, 2006
Export Citation:
Assignee:
ENTEGRIS INC (US)
EXTRAND CHARLES W (US)
WRIGHT MICHAEL (US)
EXTRAND CHARLES W (US)
WRIGHT MICHAEL (US)
International Classes:
B65D85/30
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