Abstract: Spot beam focusing (SBF) is the process of focusing the signal power in a small spot-like region in the 3D space, which can be either hard-tuned (HT) using traditional tools like lenses and ...

Abstract: This paper proposes a guided-wave-excited space-time digital coding metasurface (STCDM) for harmonic beam scanning and independent multi-harmonic beam control. To realize real-time control ...

The “American Bad Ass” rocker sent social media into a tailspin after posting footage of a military helicopter hovering just yards away from his Tennessee estate dubbed the “Southern White House.” But ...

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The quality of light in an LED luminaire depends on both the source and on how the light is distributed. Image Credit: nikkytok/Shutterstock.com LED diffusers are optical components that scatter, ...