Nature paper about mechanical metamaterials violating Betti's theorem
Maybe because I am proud of Betti's theorem being italian, I am curious about this big emphasys on systems violating it. They may "open avenues for energy absorption, conversion and harvesting, soft robotics, prosthetics and optomechanics".... ? I'd be curious to hear some comments. Anyway, the last author Andrea Alu is anyway italian like Betti.