...Pierre Hillion Using an integral equation approach, we investigate the reflection of focus wave modes on conventional and time reversal mirrors when the total field, incident plus reflected, satisfies on these mirrors the Neumann boundary condition. It is also shown that the form of the incident...

...Jamil M. Renno; Daniel J. Inman The behavior of a membrane mirror strip actuated using a piezoelectric bimorph is treated. An improved model for the transverse vibration is presented. The model accounts for the changes in physical properties of the membrane strip at the location...