Abstract: A method for creating a mark (16) with a desired colour on an article (40), wherein the article (40) comprises a metal (44) having a metal surface (5), and which method comprises: providing a laser (1) for emitting a laser beam (4) comprising laser pulses (21) having a pulse energy (25), a pulse width (26), a pulse repetition frequency (27), and a wavelength (20); providing a scanner (2), which comprises a first mirror (6) for scanning the laser beam (4) in a first direction (8), and a second mirror (7) for scanning the laser beam (4) in a second direction (9); providing a lens (3) for focussing the laser beam (4) from the laser (1) onto the metal surface (5) to form a spot (31) having a spot diameter (34) and a pulse fluence (36); providing a controller (11) for controlling the scanner (2) with a control signal ( 12); marking a plurality of lines (15) separated by a hatch distance (19) on the metal surface (5) to form the mark (16) by scanning the scanner (2) with a scan speed (17) while pulsing the laser (1

Abstract: A weld (3) between a first material (1) and a second material (2), the first material (1) being a first metallic material, and the second material (2) being a second metallic material, the weld (3) has a width (4) between 0.5 mm and 7 mm, the weld (3) comprises at least one microweld (8), the microweld (8) forms a welding pattern (5) defined parallel to a surface (6) of the first material (1), and the microweld (8) has a characteristic feature size (7) of between 20 ?m and 400 um.