Patent ID: 8298755

Claim:
A method for growing small crystals having a crystal size of 2 microns or less on substrates comprising the steps of: (a) applying a photoresist film to a substrate; (b) placing a pattern mask having a desired pattern of islands over the photoresist film and subjecting the substrate to photolithography; (c) removing the pattern mask from the coated substrate; (d) selectively removing the photoresist film from at least a first portion of the substrate; (e) subjecting the substrate to a hydrophilic SAMs solution for self-assembling hydrophilic SAMs on certain portions of the substrate surface; (f) selectively removing the photoresist film from at least a second portion of the substrate; and (g) subjecting the substrate to a hydrophobic SAMs solution for self-assembling hydrophobic SAMs on certain other portions of the substrate surface, wherein: (i) the substrate is a hydrophilic flexible polymer; (ii) the substrate is coated with a hydrophobic photoresist film; (iii) the pattern mask is prepared having a desired pattern of islands, the pattern mask is placed on the coated substrate, and the coated substrate is subjected to the photolithography at an appropriate wavelength of light; and (iv) the photoresist film is removed from the areas of the substrate not exposed to the light such that the hydrophilic substrate surface (the pattern of islands) is exposed through the hydrophobic photoresist film.