http://www.physorg.com/news74704078.html

Ferroelectric controllable molecular deformation or physical displacement of internal atomic structures caused by electric fields has been know for over 80 years.

Piezoelectric materials change there elastic moduli thru electrical discharge due to their changing physical structure by compression and expansion of the molecule has been known for over 50 years, i.e., hit it with a hammer you get electricity, verify by going to your barbeque and pressing the red striker button to light the grill.

Minor says, "For the first time we can directly investigate fundamental parameters like elastic moduli and the stresses required to initiate dislocations and their movement, a prospect that has the materials science community very excited. It"s opened up a new window into the world of nanomechanics."