Abstract: A method for laser-processing a metallic surface to produce a functionalized metallic surface comprises: providing a material substrate having the surface; and applying a pulsed laser beam to a region of the surface, the pulsed laser beam being applied at a non-normal angle to the surface, wherein material in the region of the surface ablates due to the applied pulsed laser beam and wherein at least a portion of the ablated material redeposits on the surface to produce one or more material-coated structures angled at the non-normal angle with respect to the surface, wherein the surface having the one or more material-coated structures is the functionalized surface. The functionalized metallic surface has broadband directional emissivity independent of polarization.

Abstract: Aspects and embodiments disclosed herein include a method for forming a plurality of microfeatures, the method comprising: irradiating a starting multi-layer material with a pulsed laser beam at a plurality of locations of the multi-layer material; wherein: the starting multi-layer material comprises a plurality of starting layers comprising a first starting layer having a first composition and a second starting layer adjacent to the first starting layer and having a second composition different than the first composition; the plurality of microfeatures form in the multi-layer starting material during the step of irradiating; each microfeature comprises a plurality of microfeature layers comprising a first microfeature layer having the first composition and a second microfeature layer having the second composition. Optionally, each of the first and second composition is an inorganic material.