Nanotechnology and Biomimicry UW MRSEC Powerpoint
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Nanotechnology and Biomimicry
Anne Lynn Gillian-Daniel, Ph.D.Ben TaylorInterdisciplinary Education GroupUniversity of Wisconsin-Madison
“Nano” All around Us
Apparel with silver nanoparticles
VX Nano Cordless Laser Mouse
What is nanotechnology?
Nanotechnology is the understanding and control of matter 1 to 100 nanometers in size.
1. The nanometer is extremely small.
2. At the nanometer scale, many materials behave differently.
3. We can harness this new behavior to make new materials.
1/100th of a meter(centimeter)
1/1000th of a meter (millimeter)
Exactly how small is a nanometer?
All these are still visible with your eyes.
A micrometer (µm) is one-millionth of a meter
One red blood cell is 6-8 µm
Nanoscale objects are 1,000 times smaller!!!
A human hair is ~40 µm
How small can you see?
3-50 nm DNA1-2 nm
. . . Smaller than you can see!
A nanometer (nm) is one billionth of a meter!!
Nanometer:Part of the Metric System
kilometer km 1,000 1X103
meter m 1 1X100
millimeter mm 1/1,000 1X10-3
micrometer m 1/1,000,000 1X10-6
nanometer nm 1/1,000,000,000 1X10-9
picometer pm 1/1,000,000,000,000 1X10-12
DNA: 1-2 nm
11-year-old human ~ 1.4 m
WI is 420 km wide
Nano Fun FactsIn the time it takes to read this sentence, your fingernails will have grown approximately one nanometer (1 nm).
A nm is to a meter as an eye blink is to one year.
Smallness leads to new properties
Nature to Nanotech:Biomimicry
What is biomimicry?
Biomimicry is imitating nature’s best ideas to solve problems.
Nature’s inspiration Biomimicry
http://www.itsnature.org Getty Images courtesy of Speedo
Alexander Johmann/Flickr Eastgate Centre in Harare, Zimbabwe , Mandy Patter, Creative Commons
Sharkskin Fast Swimsuit
Termite Dens Self-cooling Buildings
IridescenceColors change depending on the angle from which the surface is viewed
Different thicknesses (bubbles) or nano features (peacock) create iridescence
Peacock feather close-up
Blue Bedder flowers
Why is there iridescence in nature?• Attract mates or pollinators• Camouflage
Blue Morpho Butterfly
The iridescent color is created by nanometer-sized structures on the butterflies wing scales.
Blue Morpho Butterfly Wing
Scanning Electron Microscope image of the Blue Morpho butterfly showing nanoscale features responsible for iridescence. (Shinya Yoshioka, Osaka University)
These nano-scale ribs
reflect light to create
This microscope image shows the tree-like rib structures of a
cross-section of the wing.
Peacock feathers are iridescent
Peacock feathers close up
Nano size holes repeat as a pattern on the nano scale
SEM of a cross section of one barbule (Zi et al, PNAS 2003.)
This nanoscale pattern reflects light to create iridescent colors.
Biomimicry of Iridescence
Biomimicry of iridescence is used for security on currency, photo identification, and credit cards.
Biomimicry of Iridescence
Qualcomm has a new e-screen that mimics the iridescence of the blue Morpho butterfly. The screen gets brighter in sunlight.
The Lotus Effect
The lotus leaf is said to be “self-cleaning” because droplets of water roll off and remove dirt particles.
Nano-scale features, along with a waxy non-polar coating, together create a superhydrophobic surface. (very water repelling)
The Lotus Effect
Nano sized bumps
Biomimicry of The Lotus Effect
Lotusan paint mimics the lotus effect’s self-cleaning properties.
Nano-tex fabric repels liquids and stains.
Self-cleaning glass had nanostructures that prevent water from sticking to the glass.
Professor Nader Behdad of the UW-Madison is an engineer who is interested in the ears of Ormia flies
Ormia EarsTime Difference
Biomimicry of Ormia Ears
What would inspire you in nature to solve a human problem?
AcknowledgmentsMRSEC Personnel and Collaborators
• NSF Materials Research Science and Engineering Center on Nanostructured Interfaces (DMR-0520527 and DMR-0079983)
• NSF Internships in Public Science Education (DMR-0424350)• NSF Nanoscale Informal Science Education Network (ESI-053253)
National Science Foundation
This presentation is based upon work supported by the National Science Foundation under the following DMR grants: #0424350 (IPSE), #0520527 and #0779983 (MRSEC); and ESI grant #053253 Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessary reflect the views of the National Science Foundation.
NISE Net Personnel and Collaborators
College of Engineering
• Anne Lynn Gillian-Daniel, [email protected]• Ben Taylor, [email protected]
• Our Website:www.mrsec.wisc.edu/nano