Method to prepare the production of structured metal coatings using proteins
AssigneesFraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e. V., Atotech Deutschland GmbH
InventorsStefan Fiedler, Dieter Oesterhelt, Heinrich Meyer, Wolfgang Scheel, Herbert Reichl
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Abstract
The invention relates to the production of thin metal layers and structures thereof on substrates of various structures. The lateral extent of a metal layer on the respective substrate can be prescribed with a precision in the micron and submicron range. The method described makes it possible to manufacture flat and three-dimensional metal structures on smooth planar or curved surfaces, as are required, for example, for depicting writing or drawings. The method uses no printing techniques.
Claims20
A method of preparation for the production of structured metal layers on substrate surfaces, comprising the following steps:
- (a) application of a layer comprising proteins to the substrate surface, where the protein or proteins of this layer is/are selected from among proteins which, under the action of light, form a cation or anion concentration gradient between two compartments formed by the layer and the change in the ion concentration effected in this way in one of the two compartments results in metal ions or compounds present there being reduced to metal or being accessible to a future reduction, and
- (b) differential illumination of the substrate provided with the protein-containing layer.
A method of preparation for the production of structured metal layers on substrate surfaces, comprising the following steps:
- (a) application of a layer comprising proteins to a substrate surface coated with metal, where the protein or proteins of this layer is/are selected from among proteins which, under the action of light, form a cation or anion concentration gradient between two compartments formed by the layer and the change in the ion concentration effected in this way in one of the two compartments results in the metal being oxidized from the coating and being brought into solution, and
- (b) differential illumination of the substrate provided with the protein-containing layer.
Dependencies are inferred from the claim text.