Coating processes – Nonuniform coating – Applying superposed diverse coatings or coating a coated base
Reexamination Certificate
2011-07-26
2011-07-26
Fletcher, III, William Phillip (Department: 1715)
Coating processes
Nonuniform coating
Applying superposed diverse coatings or coating a coated base
C427S407100
Reexamination Certificate
active
07985451
ABSTRACT:
A process for modification of a substrate so as to form an ultrahydrophobic surface on the substrate is provided. Surface-modified substrates that can be formed according to the disclosed processes are also provided. The process includes attachment of a multitude of nano- and/or submicron-sized structures to a surface to provide increased surface roughness. In addition, the process includes grafting a hydrophobic material to the surface in order to decrease the surface energy and decrease wettability of the surface. The combination of increased surface roughness and decreased surface energy can provide an ultrahydrophobic surface on the treated substrate.
REFERENCES:
patent: 6852353 (2005-02-01), Qiu et al.
patent: 6852390 (2005-02-01), Extrand
patent: 7026014 (2006-04-01), Luzinov et al.
patent: 2004/0185260 (2004-09-01), Luzinov et al.
patent: 2004/0208791 (2004-10-01), Extrand
Written Opinion of the International Searching Authority (Form PCT/ISA/237) for PCT/US2006/12030, Oct. 3, 2007, 5 pages.
PCT Search Report for Int'l Appl. No. PCT/US06/12030, Apr. 4, 2007.
Article—Comment on Effects of the Surface Roughness on Sliding Angles of Water Droplets on Superhydrophobic Surfaces, Miwa et al., Langmuir, vol. 18, No. 2, 2002, pp. 566-569.
Article—Effects of the Surface Roughness on Sliding Angles of Water Droplets on Superhydrophobic Surfaces, Miwa et al., vol. 16, No. 13, 2000, pp. 5754-5760.
Article—Fakir droplets, David Quéré, Nature Materials, vol. 1, Sep. 2002, pp. 14-15.
Article—Nanostructured Surfaces for Dramatic Reduction of Flow Resistance in Droplet-Based Microfluidics, Kim et al., IEEE MEMS, 2002, pp. 479-482.
Article—Purity of the sacred lotus, or escape from contamination in biological surfaces, Barthlott et al., Planta, vol. 202, 1997, pp. 1-8, www.botanik.uni-bonn.de.
Article—The Lotus Effect, Hans Christian Von Baeyer, The Sciences, Jan./Feb. 2000, pp. 12-15.
Article—Ultrahydrophobic Polymer Surfaces Prepared by Simultaneous Ablation of Polypropylene and Sputtering of Poly(tetrafluoroethylene)Using Radio Frequency Plasma, Youngblood et al., Macromolecules, vol. 32, 1999, pp. 6800-6806.
Paper—Materials Engineering:Jeffrey Youngblood, Research Interests, Purdue University, Nov. 2004, 2 pages, engineering.purdue.edu.
Paper—National Textile Center, Project No. C04-CL06, Compentency: Chemistry,Ultrahydrophobic Fibers: Lotus Approach, Oct. 2004, 7 pages, mse.clemson.edu.
Barthlott, et al., “Purity of the sacred lotus, or escape from contamination in biological surfaces”,Planta, 202: 1-8, (1997).
Feng, et al., “Super-Hydrophobic Surfaces: From natural to Artificial”,Advanced Materials, 14, No. 24, (2002).
Jiang, et al., “Binary cooperateive complementary nanoscale interfacial materials”,Pure Appl. Chem.,vol. 72, Nos. 1-2, pp. 73-81, (2000).
Johnson, et al.,Adv. Chem. Ser. 43, 112 (1963).
Koning, et al., “Strategies for Compatibilization of Polymer Blends”,Prog. Polym. Sci., vol. 23, pp. 707-757, (1998).
Malynych, et al., “Light-Induced Coherent Interactions between Silver Nanoparticles in Two-Dimensional Arrays”,J. Am. Chem. Soc., 125, pp. 2896-2898, (2003).
Miwa, et al., “Effects of the Surface Roughness on Sliding Angles of Water Droplets on Superhydrophobic Surfaces”,Langmuir, 16, pp. 5754-5760, (2000).
Nakajima, et al., “Recent Studies on Super-Hydrophobic Films”,Monatshefte fur Chemie, 132, 31-41 (2001).
Abstract—Neinhuis, et al., “Characterization and Distribution of Water-repellent, Self-cleaning Plant Surfaces”,Annals of Botany79: 667-677, (1997).
Yoshimitsu, et al., “Effects of Surface Structure on the Hydrophobicity and Sliding Behavior of Water Droplets”,Langmuir, 18, pp. 5818-5822, (2002).
Youngblood, et al., Ultrahydrophobic Polymer Surfaces Prepared by Simultaneous Ablation of Polypropylene and Sputtering of Poly(tetrafluoroethylene) Using Radio Frequency Plasma,Macromolecules, 32, pp. 6800-6806, (1999).
Wenzel, R.N., Communication to the Editor, “Surface Roughness and Contact Angle”,J. Phys. Chem., 53 (9), 1466, 1949.
Brown Philip J.
Klep Viktor Z.
Luzinov Igor A.
Swaminatha Iyer Killugudi L.
Zdyrko Bogdan V.
Clemson University
Dority & Manning P.A.
Fletcher, III William Phillip
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