Abstract: An integrated circuit having a semiconductor substrate with a barrier layer is disclosed. The arrangement includes a semiconductor substrate and a metallic element. A carbon-based barrier layer is disposed between the semiconductor substrate and the metallic element.

Abstract: Method for producing a macroporous silicon substrate suitable as a carrier for microelectronic components. Blind holes are produced from a front surface of the substrate. An insulator layer is produced on the front and rear surfaces of the substrate. Selective isotropic etching is performed from the rear surface with uncovering of blind hole ends produced such that respective blind hole walls formed by the insulator layer project from the substrate on the rear surface and are defined in this region only by the insulator layer forming the respective blind hole wall. A further insulator layer is then produced on the surfaces of the substrate. A plurality of the blind holes are then filled with a metal or a metal alloy by introducing the substrate into a melt thereof under pressure in a process chamber containing the melt. The melt is then asymmetrically cooled in the blind holes from the front surface, so that the metal or the alloy contracts toward and lies on a plane with the rear surface of the substrate.

Abstract: A substrate with first and second main surfaces includes at least one channel extending from the first main surface to the second main surface. The at least one channel includes a first cross-sectional area at a first location and a second cross-sectional area at a second location. An electrically conductive first material is disposed in the at least one channel.

Abstract: A substrate has at least one feedthrough with at least one channel from a first main surface of the substrate to a second main surface of the substrate. The at least one channel is closed off with a first material. The at least one closed-off channel is filled with an electrically conductive second material.

Abstract: Carrier including a substrate having a first interface with first contact holes, and a second interface, which lies opposite the first interface, with second contact holes. The substrate includes a substrate body and electrically conductive contact channels formed therein, wherein each of the contact channels electrically conductively connects a first contact hole to a second contact hole. The carrier also includes a front-side wiring layer arranged on the first interface and has a first front-side metallization layer formed therein such that it includes a first capacitor electrode for electrically connecting microelectronic devices and/or circuits to a first pole of a signal or supply voltage.

Abstract: A method is disclosed for obtaining and/or immunologically detecting an analyte contained in a gas phase by immunologically binding the analyte to a binding partner thereof contained in a gas- and liquid-permeable first carrier matrix.

Abstract: A method is disclosed for obtaining and/or immunologically detecting an analyte contained in a gas phase by immunologically binding the analyte to a binding partner thereof contained in a gas- and liquid-permeable first carrier matrix. Said method is characterized in that a) the analyte-containing gas phase is brought into contact with the first carrier matrix (immune adsorber), b) the analyte is bound to the first binding partner which is contained in the first matrix and not bound to the matrix, and c) the complex of analyte and first binding partner and the free first binding partner are eluted from the first matrix, d) the eluted complex or the free first binding partner is determined as a measure for the amount of analyte present.

Abstract: Subject matter of the invention is a method for detecting surface contamination by an analyte by wiping the analyte off the surface with the aid of a wiping surface, eluting the analyte from the wiping surface with an eluant, and detecting the analyte in the eluate in an immunological detection reaction, characterized in that: a) the surface to be tested for the analyte is wiped with a wiping surface, b) the wiping surface is brought into contact with the planar surface of a capillary active, chromatographic test strip which has an eluant application zone at its one end and a target zone at its other end whereby contact is made in an area between these two zones, c) eluting liquid is applied onto the zone provided for this purpose, said liquid moving toward the target zone passes the contact site with the wiping surface as a consequence of capillary forces, whereby analyte is taken up by the eluant, and d) in the target zone, the analyte is measured in an immunological binding reaction.

Abstract: An adsorber material for collecting, concentrating and/or recovering gaseous and/or particle-shaped trace substances from an air or gas flow, in which the adsorber material is composed of fibrous elements made of natural and/or synthetic, organic, textile fibers which are worked into a nonwoven web having a planar geometry, the nonwoven web having a thickness of between 100 .mu.m and 2 mm and a weight per unit area of between 20 and 200 g/m.sup.2. Preferably the fibers have a fiber size between 1 and 10 dtex and are composed of cellulose and/or polyester, and if desired, the fibers may be provided with a binding agent and/or a moisture resistance agent. In preferred embodiments the nonwoven adsorber web is a fiber mixture of 80 parts polyester fibers, 20 parts viscose rayon staple fibers, and 20 parts polyvinyl alcohol fibers or a fiber mixture of 50 parts viscose rayon staple fibers and 50 parts linters, which are provided with an epichlorohydrin resin binder.

Abstract: The invention relates to DNA fragments having the cyclodextrin glycosyltransferase structural gene, to vectors and microorganisms for expression and to a preparation process for the same.

Abstract: A micromechanical structure with cavities, containers, openings, canals, depressions, humps or the like for examinations of sample substances for possible changes of physical and/or chemical properties with targeted evaluation and documentation for the purposes of biotechnology, gene technology, cell and immune research and other medical, agricultural and environment research, where the structure consists of semiconducting material (of the group III to V of the elements of the periodic system) or contain the latter or glass or ceramic, diamond, or carbon and is made by a masking technique, especially by a chemical etching technique.