Chunlei Guo

US Patent:

20080216926, Sep 11, 2008

Filed:

Sep 27, 2007

Appl. No.:

11/862449

Inventors:

Chunlei Guo - Rochester NY, US
Anatoliy Y. Vorobyev - St. Catherines, CA

International Classification:

C21D 1/09
B23K 26/00

US Classification:

148565, 21912185

Abstract:

The present invention is generally directed to the materials processing regimes obtained with laser processing using ultra-short laser pulses of subpicosecond (i.e., up to hundreds of femtoseconds) duration, and to the altered materials obtained through such materials processing regimes. Thus various aspects of the present invention are directed to, for example, methods for altering materials by exposure of the materials to one or more pulses of a fs duration laser, while other aspects of the present invention are directed to, for example, materials altered by the methods of the invention. These macro-, micro-, and nanostructured materials have a variety of applications, including, for example, aesthetic applications such as jewelry or ornamentation; biomedical applications, especially medical applications involving biocompatibility bioperformance; catalysis applications; and modification of, for example, the optical and hydrophilic properties of materials.

US Patent:

20080299408, Dec 4, 2008

Filed:

Aug 8, 2008

Appl. No.:

12/188258

Inventors:

Chunlei Guo - Rochester NY, US
Anatoliy Y. Vorobyev - St. Catharines, CA

Assignee:

UNIVERSITY OF ROCHESTER - Rochester NY

International Classification:

B32B 3/02
B23K 26/38

US Classification:

428573, 21912172

Abstract:

Embodiments of the present invention are generally directed to materials processing methods using femtosecond duration laser pulses, and to the altered materials obtained by such methods. The resulting nanostructured (with or without macro- and micro-structuring) materials have a variety of applications, including, for example, aesthetic applications for jewelry or ornamentation; biomedical applications related to biocompatibility; catalysis applications; and modification of, for example, the optical and hydrophilic properties of materials including selective coloring.

US Patent:

20120067855, Mar 22, 2012

Filed:

Oct 5, 2011

Appl. No.:

13/253173

Inventors:

Chunlei Guo - Rochester NY, US
Anatoliy Y. Vorobyev - St. Catharines, CA

Assignee:

UNIVERSITY OF ROCHESTER - Rochester NY

International Classification:

B23K 26/00
B23K 26/42

US Classification:

21912161

Abstract:

Embodiments of the present invention are generally directed to materials processing methods using femtosecond duration laser pulses, and to the altered materials obtained by such methods. The resulting nanostructured (with or without macro- and micro-structuring) materials have a variety of applications, including, for example, aesthetic applications for jewelry or ornamentation; biomedical applications related to biocompatibility; catalysis applications; and modification of, for example, the optical and hydrophilic properties of materials including selective coloring.

US Patent:

20120328905, Dec 27, 2012

Filed:

Sep 6, 2012

Appl. No.:

13/604951

Inventors:

Chunlei Guo - Rochester NY, US
Anatoliy Y. Vorobyev - St. Catharines, CA

Assignee:

UNIVERSITY OF ROCHESTER - Rochester NY

International Classification:

B32B 3/26
B32B 3/30
B32B 15/01
B23K 26/36

US Classification:

428687, 21912169, 428141

Abstract:

Methods for making a material superwicking and/or superwetting (superhydrophyllic) involving creating one or more indentations in the surface of the material that have a micro-rough surface of protrusions, cavities, spheres, rods, or other irregularly shaped features having heights and/or widths on the order of 0.5 to 100 microns and the micro-rough surface having a nano-rough surface of protrusions, cavities, spheres, rods, and other irregularly shaped features having heights and/or widths on the order of 1 to 500 nanometers. Superwicking and/or superwetting materials having micro-rough and nano-rough surface indentations, including metals, glass, enamel, polymers, semiconductors, and others.

US Patent:

7420685, Sep 2, 2008

Filed:

Apr 28, 2006

Appl. No.:

11/413137

Inventors:

Chunlei Guo - Rochester NY, US

Assignee:

University of Rochester - Rochester NY

International Classification:

G01N 21/25

US Classification:

356445, 356447

Abstract:

Two optical signals are autocorrelated by causing them to be incident on a metal surface, where they generate a second (or higher) harmonic signal. The resulting harmonic signal is detected by a photomultiplier tube or the like. The harmonic signal generation on the metal surface is phase-matched and dispersion free and can be performed over a wide range of wavelengths.

US Patent:

20150136226, May 21, 2015

Filed:

Jan 9, 2015

Appl. No.:

14/593465

Inventors:

Chunlei Guo - Rochester NY, US
Anatoliy Y. Vorobyev - Saint Catharines, CA

Assignee:

UNIVERSITY OF ROCHESTER - Rochester NY

International Classification:

B23K 26/00
H01L 31/054
H01L 31/0232

US Classification:

136256, 257432, 428687, 428141, 21912169

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.