The material is formed by coating a plastic model of the structure with a thin layer of nickel alloy, or a mixture of metals. The plastic is then dissolved away from the inside, leaving behind empty metal tubes. "The walt of each tube is only 1/1000th the thickness of a human hair," says Valdevit. The lightweight and spongy flexible structure is perfect for use in batteries and shock absorbers.
DENSITY OF MATERIALS
The world's lightest material has a density (mass over volume) of 0.9 milligrams/ [centimeter.sup.3]. About how many times lighter is it than Styrofoam?
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|Title Annotation:||PHYSICS: MATERIALS|
|Article Type:||Brief article|
|Date:||Feb 13, 2012|
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