Abstract: This application relates to a method of forming nano-patterns on a substrate comprising the step of forming a plurality of nanostructures on a dielectric substrate, wherein the nanostructures are dimensioned or spaced apart from each other by a scaling factor of the dielectric substrate with reference to a silicon substrate.

Abstract: There is provided a diffractive optical element including a substrate, and an array of optical nanoantennas arranged on the substrate, the array of optical nanoantennas being spaced apart periodically in a lateral direction for supporting a plurality of diffraction orders at a predetermined wavelength. In particular, each optical nanoantenna in the array of optical nanoantennas is configured to control distribution of electromagnetic energy from an incident light having the predetermined wavelength amongst the plurality of diffraction orders so as to promote scattering of the electromagnetic energy in at least a first direction and suppress scattering of the electromagnetic energy in at least a second direction, the first direction and the second direction corresponding to a first diffraction order and a second diffraction order of the plurality of diffraction orders, respectively.

Abstract: There is provided a diffractive optical element including a substrate, and an array of optical nanoantennas arranged on the substrate, the array of optical nanoantennas being spaced apart periodically in a lateral direction for supporting a plurality of diffraction orders at a predetermined wavelength. In particular, each optical nanoantenna in the array of optical nanoantennas is configured to control distribution of electromagnetic energy from an incident light having the predetermined wavelength amongst the plurality of diffraction orders so as to promote scattering of the electromagnetic energy in at least a first direction and suppress scattering of the electromagnetic energy in at least a second direction, the first direction and the second direction corresponding to a first diffraction order and a second diffraction order of the plurality of diffraction orders, respectively.

Abstract: This application relates to a method of forming nano-patterns on a substrate comprising the step of forming a plurality of nanostructures on a dielectric substrate, wherein the nanostructures are dimensioned or spaced apart from each other by a scaling factor of the dielectric substrate with reference to a silicon substrate. There is also provided a method of forming a nano-patterned substrate comprising the step of forming a plurality of nanostructures on a dielectric substrate, wherein said dielectric substrate comprises an anti-reflectance layer disposed on a base substrate.