Single-layer zigzag-type metallic glass film enables precisely tunable emissivity for infrared camouflage

A new study from National Taiwan University reports a single-layer zigzag-type metallic glass film with precisely tunable emissivity for thermal infrared camouflage technology. A glancing-angle deposition method was used to fabricate the zigzag-type structure. According to the infrared lossy characteristics of metallic glass and the strong optical anisotropy induced by the zigzag microstructure, the absorptance/emissivity of the film is sensitive to the in-plane rotation angle and sample-tilt angles.