Abstract: A sensor for detecting a liquid in a fluid channel of a microfluidic component and to a microfluidic component having such a sensor. The sensor includes an electrode arrangement having a transmitting electrode, a receiving electrode and a first shielding electrode, which are arranged in a coplanar manner on a plane and can be positioned above or below, adjacent to the fluid channel, wherein the transmitting electrode and the receiving electrode are capacitively coupled in that they each have an adjacently arranged edge having a dielectric therebetween.

Abstract: A sensor for detecting a liquid in a fluid channel of a microfluidic component and to a microfluidic component having such a sensor. The sensor includes an electrode arrangement having a transmitting electrode, a receiving electrode and a first shielding electrode, which are arranged in a coplanar manner on a plane and can be positioned above or below, adjacent to the fluid channel, wherein the transmitting electrode and the receiving electrode are capacitively coupled in that they each have an adjacently arranged edge having a dielectric therebetween.

Abstract: A process for coating fine particles, in which the feed mixture contains: a monomer and/or an oligomer of aromatic compounds or unsaturated hydrocarbon compounds suitable for forming an electroconductive oligomer, polymer, copolymer, block copolymer or graft copolymer; at least one type of anions which (1) are and/or can be incorporated as doping ions into the structure of the conductive polymer; (2) can be discharged from said structure in the event of a potential fall of the conductive polymer (reduction); and (3) can have an anti-corrosive effect in the presence of a metallic surface; at least one type of particles; if necessary, at least one oxidising agent and water and/or at least another solvent. A coating is formed from the feed mixture on the particle surface, the feed mixture being converted by oxidation into a conductive polymer in the presence of at least one type a of mobile anti-corrosive anion.

Abstract: A process for coating metallic surfaces with an anti-corrosive composition that contains a conductive polymer and is a dispersion that contains the at least one conductive polymer mainly or entirely in particulate form, as well as a binder system. The conductive polymer is at least one polymer based on polyphenylene, polyfuran, polyimidazole, polyphenanthrene, polypyrrole, polythiophene and polythiophenylene charged with anti-corrosive mobile anions. Alternatively, the metallic surfaces can be first coated with a dispersion based on conductive polymers in particulate form, then coated with a composition which contains a binder system.

Abstract: A process is disclosed for coating metallic surfaces with an anti-corrosive composition that contains a conductive polymer and is a dispersion that contains the at least one conductive polymer mainly or entirely in particulate form, as well as a binder system. The conductive polymer is at least one polymer based on polyphenylene, polyfuran, polyimidazole, polyphenanthrene, polypyrrole, polythiophene and/or polythiophenylene charged with anti-corrosive mobile anions. Alternatively, the metallic surfaces can be first coated with a dispersion based on conductive polymers in particulate form, then coated with a composition which contains a binder system.

Abstract: A process is disclosed for coating fine particles, in which the feed mixture contains: at least one monomer and/or at least one oligomer selected from monomers and/or oligomers of aromatic compounds and/or unsaturated hydrocarbon compounds suitable for forming an electroconductive oligomer, polymer, copolymer, block copolymer or graft copolymer; at least one type of anions which (1) are and/or can be incorporated as doping ions into the structure of the conductive polymer, (2) can be discharged from said structure in the event of a potential fall of the conductive polymer (reduction); and (3) can have an anticorrosive effect in the presence of a metallic surface; at least one type of particles; if necessary, at least one oxidising agent and water and/or at least another solvent. A coating is formed from the feed mixture on the particle surface, the feed mixture being converted by oxidation into a conductive polymer in the presence of at least one type of mobile anti-corrosive anions.

Abstract: The invention relates to a method for protecting a metal surface by means of a coating based on a corrosion-inhibiting composition containing the following component(s): a) at least one type of deposit substance comprising (1) anions incorporated by an oxidation reaction and (2) releasing at least a part of said anions for a potential variation between a redox potential of the deposit substance and an undisturbed corrosion potential of a metal surface or when a comparably small potential variation is produced on a defect, wherein said anions can inhibit a partial anodic or/and cathodic corrosion reaction or/and act as an adherence initiator, said anions comprise, respectively, an ionic radius non-impairing the migration thereof, possibly b) at least one type of matrix substance, wherein said deposit substance(s) disposed in the undisturbed areas of the coating are at least partially oxidised or at least partially doped by the anions and at least one type of the deposit substance in the disturbed areas of the

Abstract: The process for preparation of semipermeable polymer layers with ion-exchanging and ion-conducting capabilities comprises the steps of making and depositing a polymer layer in situ by electrochemical polymerization on an electrically conductive substrate and subsequently cross-linking, by heating or irradiating. The electrochemically formed polymer layers are built up of poly(oxyphenylene) or poly(naphthylene) chains, in which the aromatic units contain the ion-exchanging and ion-conducting groups. These polymer layers are suitable for use as a semipermeable membrane in an electrode/membrane unit, as a selective layer or as a component of a selective layer of potentiometric and amperometric sensors and as a solid polymer electrolyte in electrochemical cells.

Abstract: The process for encasing an electrically conductive region in an electronic component in an insulating layer comprises the steps of depositing a polymer layer by electrochemical polymerization of phenol-, thiophenol- and analine-containing monomers and their combinations from an electrolytic solution on the electrically conductive region and subsequently cross-linking the polymer layer to form a chemically inert insulating layer. The process provides a uniformly adhering thin insulating layer. A field effect transistor so encased is suitable for use as a physical and/or chemical sensor.

Abstract: The ultramicroelectrode comprises a wire or filament of noble metal and/or carbon on which an insulating layer is provided. The insulating layer is made from a cross-linked alkenyl-substituted poly(1,4-phenylene) ether, poly(1,4-phenylene) thioether or poly(1,4-aniline). This ultramicroelectrode can be used as a disk, cylindrical, bipolar or shielded electrode and may be used as a stimulating electrode, amperometric or potentiometric microsensor or as an electrode for analytical measurement, e.g. for inverse voltammetry.