New material is nearly as light as air

The new metal, developed at UC-Irvine with assist from DARPA, is 99.9 percent air. Applications for nano-technology, batteries, and defense envisioned.

A team of researchers from University of California at Irvine, HRL Laboratories and the California Institute of Technology have developed the world's lightest material — with a density of 0.9 mg/cc — about 100 times lighter than Styrofoam.

The new material redefines the limits of lightweight materials because of its unique "micro-lattice" cellular architecture. The researchers were able to make a material that consists of 99.99 percent air by designing the 0.01 percent solid at the nanometer, micron and millimeter scales. "The trick is to fabricate a lattice of interconnected hollow tubes with a wall thickness 1,000 times thinner than a human hair," said lead author Dr. Tobias Schaedler of HRL.
 
The material's architecture allows unprecedented mechanical behavior for a metal, including complete recovery from compression exceeding 50 percent strain and extraordinarily high energy absorption.
 
"Materials actually get stronger as the dimensions are reduced to the nanoscale," explained UCI mechanical and aerospace engineer Lorenzo Valdevit, UCI's principal investigator on the project. "Combine this with the possibility of tailoring the architecture of the micro-lattice and you have a unique cellular material."
 
Developed for the Defense Advanced Research Projects Agency, the novel material could be used for battery electrodes and acoustic, vibration or shock energy absorption.
 
William Carter, manager of the architected materials group at HRL, compared the new material to larger, more familiar edifices: "Modern buildings, exemplified by the Eiffel Tower or the Golden Gate Bridge, are incredibly light and weight-efficient by virtue of their architecture. We are revolutionizing lightweight materials by bringing this concept to the nano and micro scales."

 

Comments

Chagas and chikungunya diseases spread in Texas

Chikungunya and Chagas disease are prevalent in Latin America. Visitors to those areas may be bringing it to the U.S. Dogs are a prime factor in spreading fatal Chagas infections.

After Israel, the next stop for Hamas is the Vatican

The Hamas terrorists have had no qualms about launching missiles at the holy city, Jerusalem, and the sites allegedly holy to Islam. So too they will have no qualms about attacking Rome.

Michigan subsidizes deer for wealthy landowners

Most deer reside on private land, according to Michigan's Department of Natural Resources, and thus need public money.

Terrorist tunnels pose military challenge to Israel

U.S. intelligence may show that Israel has greatly underestimated extent of tunnels.

Chagas and chikungunya diseases spread in Texas

Chikungunya and Chagas disease are prevalent in Latin America. Visitors to those areas may be bringing it to the U.S. Dogs are a prime factor in spreading fatal Chagas infections.

After Israel, the next stop for Hamas is the Vatican

The Hamas terrorists have had no qualms about launching missiles at the holy city, Jerusalem, and the sites allegedly holy to Islam. So too they will have no qualms about attacking Rome.

Michigan subsidizes deer for wealthy landowners

Most deer reside on private land, according to Michigan's Department of Natural Resources, and thus need public money.

This page took 0.1631seconds to load