Confession: I have a desk drawer filled with gel pens in a variety of colors (think neon pink, shimmery gold, deep black and beyond). I use them to write birthday cards for my friends and for my ...

WASHINGTON – President Donald Trump is juggling a war in Iran and the partial shutdown of the Department of Homeland Security, but took time during a Cabinet meeting to lavish praise on Sharpie pens.

Abstract: Optical metasurfaces control light waves by adjusting their amplitude, phase, and polarization state, thereby affecting the direction of light propagation and wavefront propagation, and are ...