Superconductors are among the most puzzling materials in physics. They conduct electricity with zero resistance, but only ...

Lithium was supposed to be soft. The metal bends easily in bulk form, stretches before it breaks, and deforms the way you might expect a pliable material to behave.

Abstract: This manuscript introduces the development of various forms of photonic crystal fibers (PCFs), including hexagonal, square, and circular structural shapes. The hexagonal and square ...