hydrophobic

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Zoom into a Lotus Leaf video

In this film "Zoom into a Lotus Leaf," see an up close look at the tiny nanostructures that give the leaf its unique behavior. The Lotus Leaf is a symbol of purity because it appears to be perpetually clean. We now know that its self-cleaning properties are due to its ability to repel water very effectively; it's superhydrophobic. It gets its superhydrophobicity from tiny nanostructures. We start with a normal digital camera and zoom in using increasingly powerful microscopes as we explore this phenomena.

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NISE Network product

Exploring Products - Nano Sand (NanoDays 2011)

"Exploring Products - Nano Sand" is a hands-on activity exploring how water behaves differently when it comes in contact with nano sand and regular sand. Visitors learn about the hydrophobic properties of nano sand.

"Explore Science - Zoom info Nano Mystery Sand" (2016) version designed for groups and community outreach.

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NISE Network product

Sand, Plants and Pants

Sand, Plants and Pants is a hands-on activity exploring how the application of nano-sized particles or substances can change a bigger material’s properties. Visitors investigate the hydrophobic properties of plants, nano-fabric pants and magic sand.

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NISE Network product

Exploring Products - Nano Fabrics

"Exploring Products - Nano Fabric" is a hands-on activity exploring how the application of nano-sized whiskers can protect clothing from stains. Visitors investigate the hydrophobic properties of pants made from nano fabric and ordinary fabric.

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NISE Network product

Lotus Leaf Effect

"Lotus Leaf Effect” is a cart demo that demonstrates how nature inspires nanotechnology by sharing how nanoscale features on a surface can influence how a material behaves at the macroscale. Visitors learn that lotus leaves (and many other plant leaves) are self cleaning and repel water, due to nanoscale features on the leaves. During the program, visitors compare how water interacts with regular lettuce and leaves that exhibit the lotus effect by dropping water onto the different types of leaves.

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Oil spill video screenshot 2 cups

Linked product

Oil Spill Clean Up Simulation

“Nano sand” is a product that was originally invented to help clean up oil spills in water. Since the “nano sand” is hydrophobic, it does not let water molecules pass through. It does, however, let oil molecules pass through. When oil-contaminated water is exposed to “magic sand”, the oil passes through and leaves clean water behind. And when “magic sand” is sprinkled on top of oil spills, the sand binds with the oil and creates oil- filled sand clumps that fall to the bottom of an ocean or lake. If you use a small amount of oil so that it does not make a full layer and instead forms...

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A hundred tiny hands kit box cover

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A Hundred Tiny Hands Inventor Kits

A Hundred Tiny Hands creates Inventor Kits for kids; the company is led by Michelle Khine, Ph.D., professor at the University of California, Irvine and co-founder of several biotech start-up companies. Kits available for pre-order. "As a nanotechnology lab at the University of California, Irvine, we believe in the power of the small. We ask you to imagine the collective power of the little hands of our next generation of scientists, engineers, and inventors. We need to inspire, nurture, and guide these little hands to do great things." Kits...

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water droplet

Linked product

The Water Race: Hydrophobic & Hydrophilic Surfaces (High School curriculum lesson)

This activity developed by NNIN explores how nanotechnology can be used to change the properties of a copper surface so that it either attracts or repels water. It is appropriate for middle school and high school students.

Nonpolar molecules that repel the water molecules are said to be hydrophobic; molecules forming ionic or a hydrogen bond with the water molecule are said to be hydrophilic. This property of water was important for the evolution of life. Hydrophobic interaction plays the most critical roles in the formation of the lipid bilayer of the cell membrane and the folding...

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