Wetting
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Wetting is the ability of a liquid to maintain contact with a solid surface by displacing another substance or material – either a gas, or other liquid not miscible with the wetting liquid – due to th
Water bead on a fabric that has been made non-wetting by chemical treatment.
Figure 6: Schematic of advancing and receding contact angles
Figure 9: Petal effect vs. lotus effect
Strands of an uncharged ferrocene-substituted polymer are tethered to a hydrophobic silica surface. Oxidation of the ferrocenyl groups produces a hydrophilic surface due to electrostatic attractions between the resulting charges and the polar solvent.
Mucoadhesion
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Mucoadhesion describes the attractive forces between a biological material and mucus or mucous membrane. Mucous membranes adhere to epithelial surfaces such as the gastrointestinal tract, the vagina,
Disk-shaped tablets
Common Patch System