Omniphobic surfaces with hierarchical structures, and methods of making and uses thereof
AssigneeMcMaster University
InventorsLeyla Soleymani, Roderick Maclachlan, Sara Moetakef Imani, Yuting Chan, Tohid Didar
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Abstract
This application relates to omniphobic materials which are physically and chemically modified at their surface to create hierarchically structured materials with both nanoscale and microscale structures that provide the omniphobic properties. Methods of making such omniphobic surfaces with hierarchical structures and uses thereof, including as flexible films that repel contaminants are also disclosed in the application.
Claims64
A material comprising a substrate, at least one nanoparticle layer on at least a portion of the substrate and at least one omniphobic molecular layer on the nanoparticle layer, wherein the material comprises microstructured and nanostructured wrinkles, and the portion of the substrate comprising the at least one nanoparticle layer and at least one omniphobic molecular layer form hierarchical structures that are omniphobic.
A method of fabricating a material having a surface with hierarchical structures comprising:
- a) activating a substrate by oxidation of a surface layer,
- b) depositing a plurality of nanoparticles on the activated surface to form at least one nanoparticle layer on at least a portion of the substrate,
- c) coating the surface with an omniphobic molecule to create at least one omniphobic molecular layer, and
- d) treating the material to form wrinkles,
- wherein the resultant surface exhibits omniphobic properties.
A method of preventing, reducing, or delaying adhesion, adsorption, surface-mediated clot formation, or coagulation of a biological material onto a device in contact therewith, comprising:
- providing the device comprising a low adhesion surface having a substrate, at least one nanoparticle layer on the substrate and at least one omniphobic molecular layer on the nanoparticle layer, wherein the substrate comprises microstructured and nanostructured wrinkles, and the substrate comprising the at least one nanoparticle layer and at least one omniphobic molecular layer form hierarchical structures that are omniphobic;
- and contacting the biological material to the low-adhesion surface.
A device for preventing, reducing, or delaying adhesion, adsorption, surface-mediated clot formation, or coagulation of a biological material in contact therewith, comprising a low adhesion surface having a substrate, at least one nanoparticle layer on the substrate and at least one omniphobic molecular layer on the nanoparticle layer, wherein the substrate comprises microstructured and nanostructured wrinkles, and the substrate comprising the at least one nanoparticle layer and at least one omniphobic molecular layer form hierarchical structures that are omniphobic, wherein the biological material is repelled from the surface.
A material comprising a substrate, at least one nanoparticle layer on at least a portion of the substrate and at least one omniphobic molecular layer on the nanoparticle layer.
Dependencies are inferred from the claim text.