Systems and methods of laser texturing of material surfaces and their applications
First Claim
1. A method for texturing a surface of a material, comprising:
- providing a gaseous or vacuum environment in an area around the surface of the material;
irradiating a portion of the surface with about 1 to 120 laser pulses, wherein the laser pulses have;
a laser pulse energy density of about 1.6 J/cm2 to 2 J/cm2,a wavelength of about 337 nm,a pulse width of about 3.5 ns; and
wherein the method produces a periodic array of pillars or a non-periodic array of pillars on the surface, resulting in changes in properties of the surface.
0 Assignments
0 Petitions
Accused Products
Abstract
The surface of a material is textured and by exposing the surface to pulses from an ultrafast laser. The laser treatment causes pillars to form on the treated surface. These pillars provide for greater light absorption. Texturing and crystallization can be carried out as a single step process. The crystallization of the material provides for higher electric conductivity and changes in optical and electronic properties of the material. The method may be performed in vacuum or a gaseous environment. The gaseous environment may aid in texturing and/or modifying physical and chemical properties of the surfaces. This method may be used on various material surfaces, such as semiconductors, metals and their alloys, ceramics, polymers, glasses, composites, as well as crystalline, nanocrystalline, polycrystalline, microcrystalline, and amorphous phases.
-
Citations
65 Claims
-
1. A method for texturing a surface of a material, comprising:
-
providing a gaseous or vacuum environment in an area around the surface of the material; irradiating a portion of the surface with about 1 to 120 laser pulses, wherein the laser pulses have; a laser pulse energy density of about 1.6 J/cm2 to 2 J/cm2, a wavelength of about 337 nm, a pulse width of about 3.5 ns; and wherein the method produces a periodic array of pillars or a non-periodic array of pillars on the surface, resulting in changes in properties of the surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
-
-
37. A system for texturing a surface of a material comprising:
-
a gaseous or vacuum environment encompassing the material; a base for retaining the surface; and an energy source configured to provide a radiation source, said radiation source configured to irradiate a portion of the surface with about 1 to 120 laser pulses, said laser pulses configured to provide; a laser pulse energy density of 1.6 J/cm2 2 J/cm2; a wavelength of about 337 nm; and a pulse width of about 3.5 ns; resulting in the formation of a periodic array of pillars or a non-periodic array of pillars on the surface. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53)
-
-
54. A method for texturing a surface of a material, comprising:
-
providing a gaseous or vacuum environment in an area around the surface of the material; irradiating a portion of the surface with about 1 to 120 laser pulses, wherein the laser pulses have; a laser pulse energy density of about 1.6 J/cm2 to 2 J/cm2, a wavelength of about 337 nm, a pulse width of about 1 ns to 3.5 ns; and wherein the method produces a periodic array of pillars or a non-periodic array of pillars on the surface, resulting in changes in properties of the surface. - View Dependent Claims (55, 56, 57, 58, 59)
-
-
60. A system for texturing a surface of a material comprising:
-
a gaseous vacuum environment encompassing the material; a base for retaining the surface; and an energy source configured to provide a radiation source, said radiation source configured to irradiate a portion of the surface with about 1 to 120 laser pulses, said laser pulses configured to provide; a laser pulse energy density of about 1.6 J/cm2 to 2 J/cm2; a wavelength of about 337 nm; and a pulse width of about 1 ns to 3.5 ns; resulting in the formation of a periodic array of pillars or a non-periodic array of pillars on the surface. - View Dependent Claims (61, 62, 63, 64, 65)
-
Specification