Optical vortices—light beams carrying orbital angular momentum (OAM)—are characterized by helical wavefronts and phase ...

Photolithography allows the construction of arrays with extremely high information content. Because the arrays are constructed on a rigid material (glass), they can be inverted and mounted in a ...

Summer is nearly here, which means it’s time to bring your sandals out of hibernation or grab a few new pairs. Arguably, the best types of sandals are ones that are comfy enough to let you do fun ...