Subscribe
Subscribe
MY AMERICAN SCIENTIST
LOG IN! REGISTER!
SEARCH
 
Logo IMG
HOME > MULTIMEDIA > Multimedia Detail

SCIENCE IN THE NEWS DAILY

'Impossible' Material Would Stretch When Compressed

from New Scientist

Imagine cushions that lift up instead of sinking when you sit on them. Impossible? Not according to a blueprint for new materials with "negative compressibility": the materials compress when they are pulled and expand when they are pushed.

Metamaterials that do this have been built before. For example, vibrating aluminium bars with tiny cavities inside them create waves that oppose the push or pull applied (Nature Materials, DOI: 10.1038/nmat1644). But the designs must be vibrated at just the right frequency to see the effect.

Zachary Nicolaou and Adilson Motter of Northwestern University in Evanston, Illinois, have now designed a metamaterial that stretches when compressed, and vice versa, under any circumstances. "What is interesting is that they study systems that are not responding to a vibration but to a steady applied force," says John Pendry of Imperial College London.

Read more...


comments powered by Disqus
 

Connect With Us:

Facebook Icon Sm Twitter Icon Google+ Icon Pinterest Icon RSS Feed Instagram Icon

Latest Multimedia

KosowskyImage1Click to Enlarge Image

PODCASTS: Expanding With the Cosmos

Using the Atacama Cosmology Telescope (ATC), a 6.5-meter microwave collector in Chile, cosmologists are piecing together the early history of the known universe. In an exclusive American Scientist interview, Arthur Kosowsky—a member of the ATC team and a professor in the Department of Physics and Astronomy at the University of Pittsburgh—discusses how he is using ATC to reach back in time billions of years to search for gravitational waves that could verify inflation and reveal unprecedented details about how the cosmos was born.

To view all multimedia content, click "Latest Multimedia."



RSS Feed Subscription

Receive notification when new content is posted from the entire website, or choose from the customized feeds available.


EMAIL TO A FRIEND :

Of Possible Interest

Pizza Lunch Podcasts: Through the Theoretical Glass

Science In The News Daily: New Holey Material Soaks Up CO2

Science in the News Weekly: Building With Cross-Laminated Timber

Subscribe to American Scientist