Abstract: A method for activating a gas, wherein an electrically conductive aeromaterial having a pore space comprising the gas is electrically contacted and at least one electric current, which varies over time, flows through the aeromaterial, wherein the aeromaterial exhales gas from the pore space when the electrical power consumption is increased and inhales gas from the surroundings of the aeromaterial when the power consumption is decreased, and wherein a temporally pulsed current having predefined pulse power levels, pulse durations and pulse spacings is fed through the aeromaterial and the temperature of the aeromaterial is changed by the time-varying current by 100° C. or more within one second or less. The invention also relates to an electrothermal gas actuator and to uses of a gas actuator.

Abstract: An adhesive joining device for providing a connection between a metal surface and a body using an electrochemical etching device. The device has a vacuum holder to form a vacuum connection between the adhesive joining device and the metal surface. A tool changing holder receives at least two different tools in a time-staggered manner. A first tool can be an electrochemical etching cell for an electrolyte with an etching chamber which is oriented towards the metal surface, a feed for electrolyte, a drain, and two electrodes, one electrode being mechanically and electrically connected to the metal surface and the second electrode coming into contact with the electrolyte. A second tool is for holding and positioning the body to be adhered to the etched metal surface. The distance, position, alignment, and/or parallelity of the body to be adhered can be configured in a reliable and defined manner for the adhesion process.

Abstract: A composite structure having —at least a first partial surface of a structure and/or of a workpiece and/or of a layer comprising titanium and/or a titanium alloy and/or NiTi, —a polymer which is arranged at least partially or in sections on the first partial surface of the first structure and/or of the workpiece and/or of the layer, —a common anchoring layer, wherein —the polymer is bonded in the contact region to the titanium and/or to the titanium alloy and/or NiTi at least partially or in sections or in the region of the first partial surface, completely or entirely via the common anchoring layer. Furthermore, the invention relates to an electrochemical etching method for producing undercut structures on surfaces of titanium and/or titanium alloys and/or NiTi for mechanical coupling of a polymer to produce a composite structure.

Abstract: A steel-polymer composite structure having an aluminum polymer anchoring layer, wherein the composite structure consists of—a first sub-structure which consists solely of steel,—a second sub-structure which consists solely of aluminum or an aluminum alloy and which adjoins at least sub-regions of the first sub-structure and is applied thereon, and—a third sub-structure which consists solely of a polymer, fiber-polymer composite, or polymer particle composite and which adjoins at least sub-regions of the second sub-structure and is applied thereon, wherein—a layer structure which runs from the center of the first sub-structure at least in one direction is made of the first, second, and third sub-structure such that the first sub-structure made of steel is at least partly covered by and/or is connected to the second sub-structure made of aluminum or an aluminum alloy, and the second sub-structure is at least partly covered by and/or is connected to the third sub-structure.

Abstract: A method for activating a gas, wherein an electrically conductive aeromaterial having a pore space comprising the gas is electrically contacted and at least one electric current, which varies over time, flows through the aeromaterial, wherein the aeromaterial exhales gas from the pore space when the electrical power consumption is increased and inhales gas from the surroundings of the aeromaterial when the power consumption is decreased, and wherein a temporally pulsed current having predefined pulse power levels, pulse durations and pulse spacings is fed through the aeromaterial and the temperature of the aeromaterial is changed by the time-varying current by 100° C. or more within one second or less. The invention also relates to an electrothermal gas actuator and to uses of a gas actuator.

Abstract: A method for producing a silicon anode for secondary batteries. Mesoporous silicon is used for the anode to provide space for volume expansion in the course of intercalation, especially of lithium ions. However, instead of coating a metal film with silicon, here metal is deposited onto a monocrystalline etched silicon wafer. It is essential that the silicon is monocrystalline and that the two flat sides of the wafer are (100)-oriented, i.e., perpendicular to the (100)-direction of the volumetric crystal.

Abstract: A plastic fiber composite material/aluminum laminate having: at least one flat element made of aluminum and/or an aluminum alloy and a plastic fiber composite material comprising a matrix material which has a temporarily flowable and then hardened state initially or at least under a temperature effect. The at least one flat element has etched anchoring structures, the anchoring structures have steps and undercuts, and the anchoring structures are filled and/or enclosed by the matrix material of the plastic fiber composite material. Use of the plastic fiber composite material/aluminum laminate and a method for producing the plastic fiber composite material/aluminum laminate.

Abstract: The present disclosure relates to tetrapodal zinc-oxide nanostructures (T-ZONS), microneedle devices, and methods for treating or preventing a zoonotic herpesvirus infection.

Abstract: A method for etching fragments of aluminum or an aluminum alloy comprising the steps of: a. providing a hydrochloric acid solution in a trough-shaped container; b. inoculating the hydrochloric acid solution by chemically dissolving an amount of aluminum to produce an etching solution; c. adding the fragments to the etching solution immediately after the inoculation; d. etching the fragments for 0.5 to 10 minutes while stirring in such a way that the fragments are entrained by the motion of the etching solution; e. stopping the etching by diluting the etching solution with water; f. removing the etched fragments; g. repeatedly rinsing the fragments with water and h. rinsing the fragments with an organic desiccant. An etched fragment of aluminum or an aluminum alloy and also to a composite material comprising etched fragments.

Abstract: An adhesive joining device for providing and/or producing an adhesive connection in an adhesive point and/or adhesive section on a metal surface (5) to a body and/or component (4) to be adhered thereon and an adhesive using an electrochemical etching device, having a vacuum holder (1) with a vacuum connection (11), wherein a vacuum can be formed between the adhesive joining device and the metal surface (5) around the adhesive point and/or adhesive section to be produced; a tool changing holder (2) which receives at least two different tools (31, 32) in a time-staggered manner and in a defined position; a first usable tool (31) which can be inserted into the tool holder (2) in a time-staggered manner, namely an electrochemical etching cell for an electrolyte with an etching chamber which is oriented towards the metal surface (5), a feed for supplying an electrolyte (311) to the etching chamber, a drain for the etching chamber (312), and two electrodes (12, 313) with corresponding electric contacts, one electro

Abstract: A heterostructure comprising at least one first surface containing only copper and at least one second surface, opposite the first surface, containing only aluminium or an aluminium alloy with solid solutions present in the alloy, wherein a. an anchoring layer is arranged between the first and second surfaces, wherein b. each slice plane running perpendicular to the anchoring layer has at least one aluminium or aluminium-alloy island surrounded by copper, and c. at most the aluminium alloy solid solutions which are present in the alloy occur in the anchoring layer. Also, an aluminium-copper connector and a heterostructure production method.

Abstract: The invention relates to a porous hydrogel matrix having substantially interconnected tunnel-shaped micropores with a three-dimensional configuration of an interconnected hollow tetrapod network. Such matrices may be used to entrap motile cells that migrate into the micropores of said matrix. The matrices of the invention are formed by a method comprising the steps of providing a solution of a hydrogel-forming material, providing a template material with a three-dimensional configuration corresponding to the negative configuration of the desired interconnected porous structure of the hydrogel material, said template material comprising interconnected zinc oxide tetrapod (t-ZnO) networks, casting the solution of hydrogel-forming material onto the template and removing the template material from the hydrogel material by acid hydrolysis of the template material.

Abstract: A plastic fiber composite material/aluminum laminate having: at least one flat element made of aluminum and/or an aluminum alloy and a plastic fiber composite material comprising a matrix material which has a temporarily flowable and then hardened state initially or at least under a temperature effect. The at least one flat element has etched anchoring structures, the anchoring structures have steps and undercuts, and the anchoring structures are filled and/or enclosed by the matrix material of the plastic fiber composite material. Use of the plastic fiber composite material/aluminum laminate and a method for producing the plastic fiber composite material/aluminum laminate.

Abstract: A heterostructure comprising at least one first surface containing only copper and at least one second surface, opposite the first surface, containing only aluminium or an aluminium alloy with solid solutions present in the alloy, wherein a. an anchoring layer is arranged between the first and second surfaces, wherein b. each slice plane running perpendicular to the anchoring layer has at least one aluminium or aluminium-alloy island surrounded by copper, and c. at most the aluminium alloy solid solutions which are present in the alloy occur in the anchoring layer. Also, an aluminium-copper connector and a heterostructure production method.

Abstract: A filling needle can be used in a tube set for transferring a flowable medium, in particular a pharmaceutical product. The filling needle has a needle end for temporary insertion in a filling vessel. Furthermore, the filling needle has a connector end for connecting the filling needle to a filling vessel, via which the medium can be supplied to the filling needle. An inner tube lumen of the filling needle is defined by an inner tube layer made of silicone. The result is a filling needle that can be manufactured inexpensively.

Abstract: A method for etching fragments of aluminum or an aluminum alloy comprising the steps of: a. providing a hydrochloric acid solution in a trough-shaped container; b. inoculating the hydrochloric acid solution by chemically dissolving an amount of aluminum to produce an etching solution; c. adding the fragments to the etching solution immediately after the inoculation; d. etching the fragments for 0.5 to 10 minutes while stirring in such a way that the fragments are entrained by the motion of the etching solution; e. stopping the etching by diluting the etching solution with water; f. removing the etched fragments; g. repeatedly rinsing the fragments with water and h. rinsing the fragments with an organic desiccant. An etched fragment of aluminum or an aluminum alloy and also to a composite material comprising etched fragments.

Abstract: The invention relates to a porous hydrogel matrix having substantially interconnected tunnel-shaped micropores with a three-dimensional configuration of an interconnected hollow tetrapod network. Such matrices may be used to entrap motile cells that migrate into the micropores of said matrix. The matrices of the invention are formed by a method comprising the steps of providing a solution of a hydrogel-forming material, providing a template material with a three-dimensional configuration corresponding to the negative configuration of the desired interconnected porous structure of the hydrogel material, said template material comprising interconnected zinc oxide tetrapod (t-ZnO) networks, casting the solution of hydrogel-forming material onto the template and removing the template material from the hydrogel material by acid hydrolysis of the template material.

Abstract: A surface-treated metallic workpiece of titanium and/or titanium alloys with titanium as the main constituent and/or nickel-titanium alloys and also nitinol, wherein on the treated surface the metal is free from inclusions, precipitates of other metals, accumulations of alkali metals, alkaline earth metals and/or aluminium, intermetallic phases, and/or mechanically highly defect-rich regions, and the surface has a first roughness and a second roughness, wherein the first roughness is provided by depressions in the form of pores, the pores having a diameter in the range between 0.5 and 50 ?m—being open in the direction of the surface and closed in the direction of the workpiece, and at least some of the pores having an undercut, and the second roughness is provided by randomly distributed elevations and depressions in the range of 100 nm and less. The invention also relates to a production process for a surface-treated workpiece.

Abstract: A multi-component plastic body designed as a multi-layered tube has at least one silicone component and at least one further polymer component made of a further nonpolar polymer. A bonding agent between the silicone component and the further polymer component has bonding bodies which mechanically bond the two components to one another. For the production of such a multi-component plastic body, first a base component is produced. The bonding agent is applied thereto, and subsequently a cover component is applied to the base component, such that the bonding agent comes to lie between the silicone component and the further polymer component. The result is a multi-component plastic body having a secure bond between the at least one silicone component and the at least one further polymer component.

Abstract: A filling needle can be used in a tube set for transferring a flowable medium, in particular a pharmaceutical product. The filling needle has a needle end for temporary insertion in a filling vessel. Furthermore, the filling needle has a connector end for connecting the filling needle to a filling vessel, via which the medium can be supplied to the filling needle. An inner tube lumen of the filling needle is defined by an inner tube layer made of silicone. The result is a filling needle that can be manufactured inexpensively.