Patent ID: 9221269
Filing Date: 2015-12-29
Classification: B23K,B41J,B82Y

Abstract:
1. An apparatus for high speed surface blackening and/or coloring comprising: an ultrashort pulse laser, wherein the ultrashort pulse laser generates an electromagnetic radiation, wherein the electromagnetic radiation comprises a wavelength, a pulse repetition rate, a pulse width, a pulse energy, and an average power, wherein the wavelength of the electromagnetic radiation generated from the ultrashort pulse laser ranges from about 0.2 μm to about 3 μm; a scanner comprising a scanning and focus range, wherein the scanner is configured to receive the electromagnetic radiation from the ultrashort laser and to scan and focus the electromagnetic radiation onto one or more samples; and a computer coupled to the ultrashort pulse laser, wherein the computer is configured to adjust the pulse repetition rate and the energy of the ultrashort pulse laser; the apparatus being configured to write micro structures onto the surface of the one or more samples, wherein the micro structures comprise micro spikes, wherein the surface of the micro spikes are covered with one or more nano structures.