Surface dislocation nucleation: Strength is but skin deep at the nanoscale

For centuries, engineers have bent and torn metals to test their strength and ductility. Now, materials scientists at the University of Pennsylvania School of Engineering and Applied Science are studying the same metals but at nanoscale sizes in the form of wires a thousand times thinner than a human hair.

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<p><a href="http://www.physorg.com/news123791739.html">Surface dislocation nucleation: Strength is but skin deep at the nanoscale</a></p> <p>For centuries, engineers have bent and torn metals to test their strength and ductility. Now, materials scientists at the University of Pennsylvania School of Engineering and Applied Science are studying the same metals but at nanoscale sizes in the form of wires a thousand times thinner than a human hair.</p>