Substrate coatings: systems, methods, and techniques
AssigneeNorth Carolina State University
InventorsJan Genzer, Pandiyarajan Chinnayan Kannan, Michael D. Dickey, Kirill Efimenko
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Abstract
Systems and methods relate to applying a coating to a substrate. Coatings can be generated using layer-by-layer application techniques. Typically, application of a first aqueous solution is alternated with application of a second aqueous solution. Example first aqueous solutions include polyethyleneimine (PEI) and hydroxy-terminated poly(dimethylsiloxane) (PDMS-OH). Example second aqueous solutions include silicate and PDMS-OH. In some instances, first aqueous solutions and/or second aqueous solutions additionally include methyl-terminated PDMS (PDMS-CH3).
Claims14
A method for generating a coating on a substrate, the method comprising:
- depositing first aqueous solution onto the substrate, thereby forming a first layer,
- wherein the first aqueous solution includes branched polyethyleneimine (PEI) and hydroxy-terminated poly(dimethylsiloxane) (PDMS-OH);
- rinsing the first layer before depositing a second aqueous solution;
- depositing the second aqueous solution onto the first layer, thereby forming a second layer,
- wherein the second aqueous solution includes silicate and PDMS-OH;
- and
- rinsing the second layer after depositing the second aqueous solution.
Dependencies are inferred from the claim text.