SUPER-HYDROPHOBIC SURFACES AND METHODS FOR PRODUCING SUPER-HYDROPHOBIC SURFACES

• US 20190319152A1
• Filed: 06/28/2019
• Published: 10/17/2019
• Est. Priority Date: 09/29/2006
• Status: Abandoned Application

• Current Assignee: University of Rochester
• Original Assignee: University of Rochester
• Inventors: Guo, Chunlei, Vorobyev, Anatoliy Y.
• Application Number:
  US16/456,226
• Publication Number:
  US 20190319152A1
• Time in Patent Office: Days
• CPC Class Codes: B23K 2103/00 Materials to be soldered, welded or cut
• CPC Class Codes: B23K 2103/10 Aluminium or alloys thereof
• CPC Class Codes: B23K 26/0006 taking account of the properties of the material involved B23K26/32, B23K26/40 take precedence
• CPC Class Codes: B23K 26/0624 using ultrashort pulses, i.e. pulses of 1ns or less
• CPC Class Codes: B23K 26/082 Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
• CPC Class Codes: B23K 26/354 by melting
• CPC Class Codes: B23K 26/355 Texturing
• CPC Class Codes: B23K 26/3568 Modifying rugosity
• CPC Class Codes: B82Y 20/00 Nanooptics, e.g. quantum optics or photonic crystals
• CPC Class Codes: B82Y 30/00 Nanotechnology for materials or surface science, e.g. nanocomposites
• CPC Class Codes: B82Y 40/00 Manufacture or treatment of nanostructures
• CPC Class Codes: C21D 1/09 by direct application of electrical or wave energy; by particle radiation
• CPC Class Codes: C21D 8/0294 involving a localised treatment
• CPC Class Codes: C22F 3/00 Changing the physical structure of non-ferrous metals or alloys by special physical methods, e.g. treatment with neutrons
• CPC Class Codes: H01L 31/0547 comprising light concentrating means of the reflecting type, e.g. parabolic mirrors, concentrators using total internal reflection
• CPC Class Codes: Y02E 10/52 PV systems with concentrators
• CPC Class Codes: Y10T 428/12993 Surface feature [e.g., rough, mirror]

Abstract

A metal or metal alloy including a region with hierarchical micro-scale and nano-scale structure shapes, the surface region is super-hydrophobic and has a spectral reflectance of less than 30% for at least some wavelengths of electromagnetic radiation in the range of 0.1 μm to 10 μm. Methods for forming the hierarchical micro-scale and nano-scale structure shapes on the metal or metal alloy are also described.

Claims

1. A metal or metal alloy comprising at least one surface region including a plurality of micro-scale structure shapes having a depth or height in the range of 0.1 to 500 μ

m and a plurality of nano-scale structure shapes having at least one dimension that is less than 1 μ

m, wherein the at least one surface region is super-hydrophobic having a water contact angle of 150°

or greater, wherein the at least one surface portion has a spectral reflectance of less than 60% for at least some wavelengths of electromagnetic radiation in the range of 0.1 μ

m to 500 μ

m.