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Superhydrophobicity

The appropriate balance between cohesive and adhesive forces results in an almost spherical drop of water standing on a surface, such as a lotus leaf. This effect is called superhydrophobicity.  Many factors such as liquid type, surface and temperature will determine whether a surface/liquid combination results in a superhydrophobic effect.  Students are encouraged to evaluate all the forces acting on the surface/liquid system and write inequalities that support the observations.

List of Required Materials

*Magic Sand

*Pipettes

Glue sticks

Paper

Water

 

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Documents

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Superhydrophobicity Slides

Nano-Link Superhydrophobicity PowerPoint Presentation

Superhydrophobicity Experiment

This video is a step-by-step demonstration of how to perform the magic sand experiment.

Superhydrophobicity Module

Nano-Link Superhydrophobicity Module

Revised Sept. 2014

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