Related Experiment Video
Updated: Jan 27, 2026

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
Published on: October 11, 2016
Long-distance shift of ultrasonic beam using a thin plate with periodic gratings
1Department of Electronic Engineering, Fudan University, Shanghai 200433, China.
Abstract:
We achieved the shift of ultrasonic beam over a long distance by guided waves through a brass plate with two groups of periodical gratings on the surface. Using Schlieren imaging, we experimentally observed the propagation of ultrasonic waves through this structure. In addition, simulations were performed using the finite-element method. Both the experimental and simulation results revealed that the shift of ultrasonic beam can be realized in this structure. We further investigated the effect of the shift distance and the size of the gratings on the shift efficiency, and discussed the mechanism. The proposed structure has potential applications in non-destructive evaluation.
Related Concept Videos
Distance Problem
Distance Corrections
The Distance Formula
The Periodic Table
Short-distance Transport of Resources
Periodic Classification of the Elements

