Ultrawide phononic band gap for combined in-plane and out-of-plane waves
Ultrawide phononic band gap for combined in-plane and out-of-plane waves
We consider two-dimensional phononic crystals formed from silicon and voids, and present optimized unit cell designs for (1) out-of-plane, (2) in-plane and (3) combined out-of-plane and in-plane elastic wave propagation. To feasibly search through an excessively large design space (10e40 possible realizations) we develop a specialized genetic algorithm and utilize …