university of wisconsin mrsec from nature to nanotech biomimicry
TRANSCRIPT
University of Wisconsin MRSEC
IridescenceWhat is iridescence?
– Colors change depending on the angle at which you look at the surface
• Different thicknesses, like with bubbles, can create iridescence.
• Nano and micro features, as in the blue Morpho butterfly, also cause iridescence.
Close-up of peacock feather
The iridescence in Blue Bedder flowers attracts pollinators
What does iridescence do in nature?– Attract mates or pollinators– Camouflage
University of Wisconsin MRSEC
Blue Morpho Butterfly Wing
Scanning Electron Microscope image of the Blue Morpho butterfly showing repeating nanoscale features responsible for iridescence.
University of Wisconsin MRSEC
Biomimicry of Iridescence
Biomimicry of iridescence is used for security on currency and credit cards.
University of Wisconsin MRSEC
Biomimicry of Iridescence
Qualcomm has a new e-screen that mimics the iridescence of the blue Morpho butterfly. The screen gets brighter in sunlight.
University of Wisconsin MRSEC
The Lotus Effect
Lotus leaves and nasturtium leaves are self-cleaning due to nano and microscale structures and a waxy coating.
Together these features create a superhydrophobic surface.
Close-up of a nasturtium leaf, which exhibits the Lotus Effect, with a droplet of water
University of Wisconsin MRSEC
Biomimicry of the Lotus Effect
Lotusan paint mimics the lotus plant’s self-cleaning properties.
Nano-Tex fabric repels liquids and stains, also mimicking the Lotus Effect.
Nature’s inspiration Biomimicry
http://www.itsnature.org Getty Images courtesy of Speedo
Eastgate Centre in Harare, Zimbabwe
Burrs Velcro
Sharkskin Fast Swimsuit
Termite Dens Self-cooling Buildings