For a given application, the wet adhesion problem can be decomposed into design at the microscale (<100um) and mesoscale (>100um).

Microscale

1. Hydrophilic Surface
2. Channels for fluid storage and movement
3. Conformation

1. Even distribution of forces across macroscale adhesive
2. Control of moments across adhesive
3. Conformation of adhesive to substrate
4. Preload
5. Gentle gripping of mesoscale substrate features