DEYMIER PIERRE A U S A,BUCAY JAIM U S A,MERHEB BASSAM FRANCE
申请号：
IN6848/DELNP/2011
公开号：
IN2011DN06848A
申请日:
2011.09.07
申请国别(地区):
IN
年份:
2013
代理人:
摘要：
A phonemic crystal is made of a first solid medium having a first density and a substantially periodic array of structures disposed in the first medium, the structures being made of a second solid medium having a second density different from the first density. The first medium has a speed of propagation of longitudinal sound waves and a speed of propagation of transverse sound waves, the speed of propagation of longitudinal sound waves being approximately that of a fluid, and the speed of the propagation of transverse sound waves being smaller than the speed of propagation of longitudinal sound waves.
