Strong Angular-Responses By Using Ultra-Low Refractive Index Dielectrics In Optical Devices

Abstract

The present disclosure contemplates an optical device that comprises a low refractive index layer that comprises a porous oxide material. The optical device may further comprise at least one additional layer comprising a second material. The optical device may comprise an ultra-low refractive index layer that comprises a porous dielectric material. Such a device may have strong angle-dependent spectral responses, including structural color devices that may produce highly iridescent and angle variable color output. In other aspects, a device is provided that comprises a first layer or region comprising a porous material comprising silicon dioxide (SiO2), which may be an aerogel or formed via glancing angle deposition (GLAD). The device may also comprise at least one additional layer or region comprising a dielectric material or a metal.

Dependencies are inferred from the claim text.