A method used to repair a workpiece through a combination of laser and an electrochemical reaction is provided. A tool anode is arranged on the back side of the workpiece and is spaced therefrom. A laser beam is focused on an outer surface of the workpiece to realize localized repairing on the back side. The method realizes localized coating repairing on the back side of the workpiece through coordination between the thermal effect of the laser and the electrochemical deposition based on the characteristic of high thermal conductivity of the workpiece. The electrodeposition reaction does not occur in regions that do not need to be repaired. The operating process is simple, the cost of the plating solution is largely reduced, and the problem that the coating on the inner wall of the thin-walled workpiece is difficult to repair due to stripping is solved.

An electrochemical device comprises a fluidic cell having an internal volume able to be filled with a fluid and at least one first and one second electrode making contact with the internal volume, wherein at least the first electrode comprises a thin layer made of a conductive material that is optically absorbent at at least one wavelength in the visible, near-infrared or near-ultraviolet spectrum, the thin layer being arranged on or in an internal surface of a wall of the fluidic cell which is at least partially transparent to said wavelength . An electrochemical apparatus comprises such an electrochemical device and an optical microscope arranged to illuminate the first electrode through the wall at at least said wavelength and also to observe it through the wall.

A metallized plastic component includes a base body of at least one light-permeable plastic to which a metal layer is applied into which at least one illuminatable structure is introduced. The at least one illuminatable structure is formed by an area in the metal layer in which a plurality of light-permeable openings is arranged in a dot matrix.

A method for forming a pattern in which a plating layer is selectively formed on a base material using a resin layer as a mask, includes resin layer-forming in which the resin layer is formed on the base material; and patterning in which the resin layer is selectively removed, in which in the patterning, a part of the resin layer is sublimed by heating to be removed.

A galvanically decorated component made of plastic has a galvanically applied chrome layer, wherein the chrome layer is processed with a laser in such a way that a mechanically applied brush structure or structure is reproduced on the surface. The component decorated in this way satisfies all requirements in accordance with the respective test specifications of the planned area of application. A method produces a plastic component having a structured surface. Components of this type made of plastic for the automotive industry are substantially decorative and operative elements.

An electrochemical device comprises a fluidic cell having an internal volume able to be filled with a fluid and at least one first and one second electrode making contact with the internal volume, wherein at least the first electrode comprises a thin layer made of a conductive material that is optically absorbent at at least one wavelength in the visible, near-infrared or near-ultraviolet spectrum, the thin layer being arranged on or in an internal surface of a wall of the fluidic cell which is at least partially transparent to said wavelength . An electrochemical apparatus comprises such an electrochemical device and an optical microscope arranged to illuminate the first electrode through the wall at at least said wavelength and also to observe it through the wall.

New and more cost-efficient methods and compositions are needed for the fabrication of three-dimensional nanostructures and/or microstructures from metals and alloys, including noble metals. In one aspect, a method of fabricating an article comprises selectively depositing a layer of copper oxide on a substrate and electrodepositing a noble metal layer onto the copper oxide layer from a solution comprising a salt of the noble metal and an electrolyte component comprising citrate, sulfite, or mixtures thereof. In being deposited onto the copper oxide layer, the noble metal layer is also selectively deposited relative to the substrate.

A method used to repair a workpiece through a combination of laser and an electrochemical reaction is provided. A tool anode is arranged on the back side of the workpiece and is spaced therefrom. A laser beam is focused on an outer surface of the workpiece to realize localized repairing on the back side. The method realizes localized coating repairing on the back side of the workpiece through coordination between the thermal effect of the laser and the electrochemical deposition based on the characteristic of high thermal conductivity of the workpiece. The electrodeposition reaction does not occur in regions that do not need to be repaired. The operating process is simple, the cost of the plating solution is largely reduced, and the problem that the coating on the inner wall of the thin-walled workpiece is difficult to repair due to stripping is solved.

Provided are a method for forming a pattern, and a catalyst and an electronic element using the method. The method for forming a pattern comprises the steps of: preparing, on a surface, a substrate sequentially including a photoconductive material layer and an oxide layer; making an area, on which a pattern is to be formed, on the oxide layer of the substrate, come into contact with an electrolyte; connecting the substrate and the electrolyte to a first electrode and a second electrode connected to a power source, respectively; and selectively irradiating light from a light source to the electrolyte and applying a voltage to the first electrode or the second electrode, thereby directly forming the pattern on the oxide layer of the substrate.