Superradiant Smith-Purcell radiation (S-SPR) is a kind of free electron radiation with a train of free electron bunches ...

In a physics first, a team including scientists from the National Institute of Standards and Technology (NIST) has created a ...

Abstract: In millimetre-wave sparse multiple-input multiple-output (MIMO) array imaging, excessive element spacing produces grating lobes, resulting in ghost artifacts, especially in low-bandwidth ...