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1. (WO2018222661) HIGH TRANSPARENCY, HIGH HAZE NANOSTRUCTURED STRUCTURES
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We claim:

1. An optically high transparency, high haze structure, comprising:

a substrate selected from the group consisting of polymer and glass, having a top surface and an opposing bottom surface; and

a sub -wavelength, nano-structured texture having a grass-like form comprising a plurality of blades and formed on at least one of the top surface and the bottom surface of the substrate.

2. The structure of claim 1, wherein the plurality of blades has a height from about 1-10 μπι.

3. The structure of claim 1, wherein the distance between each of the plurality of blades is from about 100-700 nanometers.

4. The structure of claim 1, wherein each of the high haze and the high transparency is greater than 80%.

5. The structure of claim 1, further comprising a liquid of comparable index of refraction as the substrate applied thereto that is effective to switch the substrate to one optical state when the texture is filled with the liquid, and to a different optical state when the liquid is removed.

6. The structure of claim 1, further comprising a low surface energy passivation selected from a molecule or element deposited on the texture to impart superhydrophobic properties.

7. The structure of claim 1, where the texture provides superhydrophilic properties.

8. The structure of claim 1, further comprising a high surface energy passivation selected from a molecule or element deposited on the texture to impart superhydrophilic properties.

9. The structure of claim 1, wherein one of the top and bottom surfaces of the substrate has the sub -wavelength, nano- structured texture formed thereon and the other of the top and bottom surfaces has a transparent conductor deposited thereon.

10. The structure of claim 9, wherein the transparent conductor can be selected from the group consisting of metal nanowires, metal nanomesh, doped metal oxide and combinations thereof.

11. A method of fabricating an optically high transparency, high haze structure, comprising:

obtaining a substrate selected from the group consisting of polymer and glass, having a top surface and a bottom surface; and

forming a sub -wavelength, nano-structured texture having a grass-like form comprising a plurality of blades on at least one of the top surface and the bottom surface of the substrate.

12. The method of claim 11, wherein the forming step comprises reactive ion etching.

13. The method of claim 12, wherein an etch rate is tuned or controlled to correspondingly tune or control morphology of the sub -wavelength, nano-structured texture, and the high haze and high transparency of the structure.

14. The method of claim 11, further comprising modifying the surface of the sub-wavelength, nano-structured texture with a molecule.

15. The method of claim 12, further comprising depositing or patterning a transparent conductor on one of the top surface and bottom surface which does not have the sub -wavelength, nano-structured texture.