Patent ID: 8313798

Claim:
A process for fabricating a structural color having ultraviolet reflectance, the process comprising: providing an atomizing nozzle; providing a first nanoparticle solution and a second nanoparticle solution; spraying a plurality of first nanoparticle solution layers; the plurality of first nanoparticle layers forming a low index of refraction stack; spraying a plurality of second nanoparticle solution layers; the plurality of second nanoparticle layers forming a high index of refraction stack; spraying additional layers to form a plurality of alternating low index of refraction stacks and high index of refraction stacks, the low index of refraction stacks extending across the high index of refraction stacks and vice versa; and calcinating the low index of refraction stacks and the high index of refraction stacks to form a plurality of alternating low index of refraction layers and high index of refraction layers; the alternating low index of refraction layers and high index of refraction layers having a dual reflection spectrum that reflects electromagnetic radiation in an ultraviolet region and a narrow band of electromagnetic radiation in a visible region; wherein the plurality of alternating low index of refraction layers and high index of refraction layers reflect more than 70% of the electromagnetic radiation in the ultraviolet region and more than 60% of the narrow band of electromagnetic radiation in the visible region.