Abstract: A method for manufacturing a microfluidic device includes providing a first substrate having a first surface and a second surface located opposite the first surface. An etching mask is produced on the first surface, the etching mask having an opening. A recess is produced by etching in the first surface in a region of the opening. An electrically conductive material is deposited on the etching mask and/or a layer covering the etching mask, and on a region of a bottom of the recess below the opening.

Abstract: A calibration target for calibrating an optoelectronic device for analyzing biomolecules by detecting fluorescence signals from a sample includes a substrate and a solid fluorescent layer that is disposed on the substrate and capable of being excited by laser light. The fluorescent layer has an optically inactive matrix having embedded therein a carbon-based component that is excitable to light emission.

Abstract: A reticle includes an illumination device having an optical component configured to introduce light from a light source into the reticle. The optical component has an entrance face and a reflecting face for the light of the light source. Two parallel bounding surfaces that are oriented perpendicular to an optical axis have an optical marking. A peripheral edge joins the bounding surfaces. The optical component is disposed at the peripheral edge of the reticle such that the light of the light source enters the reticle via the entrance face and the reflecting face and impinges on the marking. The entrance face is configured to act as a collecting lens on which the light of the light source impinges divergently.

Abstract: A surface coating for a medical instrument includes an interference filter having at least one dielectric layer and at least one metallic layer arranged one above another. At least one of the at least one metallic layer and the at least one dielectric layer is adapted to be structurally altered by action of a corrosive environment on the surface coating such that the surface coating is convertible from a first state to a second state. In the first state, the surface coating has a first spectral reflectivity. In the second state, the surface coating has a second spectral reflectivity that is different from the first spectral reflectivity.