First experimental observation of matter-wave diffraction in a short-lived electron-positron atom using a graphene-based diffraction grating. (Nanowerk News) One of the discoveries that fundamentally ...

Angular spectrum methods constitute a powerful framework for simulating wave propagation and diffraction phenomena in optical systems. By decomposing a complex wavefield into its constituent plane ...

The shape of water can help researchers manipulate how much energy flows through a barrier. Likun Zhang (right) senior scientist at the National Center for Physical Acoustics, and Zhengwu Wang, a ...