Abstract: In a thermocatalytically active titanium dioxide coating, based on a sol-gel system, the titanium dioxide coating contains a structuring component and/or is produced by a structuring method.

Abstract: The present disclosure may provide a mixture for use in forming a transparent coating including a silicon alkoxide precursor and an organic polymer. The silicon alkoxide precursor may have a pH level between 1 and 4. The organic polymer may have an average molecular weight between 5,000 and 50,000 Da. The mixture may include 35% to 65% organic polymer by volume. The organic polymer may be removed from the mixture after application leaving a resultant transparent coating, wherein: the resultant coating has a porosity of ?35% to ?65%; a thickness in the range from ?95 nm to ?135 nm; pores having an average diameter from ?5 nm to ?50 nm; and a diameter distribution according to a log-norm distribution with a half-width of ?10 nm.

Abstract: For particularly good adaptation to a given hearing situation, an in-the-ear hearing device which has a housing with a channel in the housing that is designed as a through-opening for sound and air between the interior of the ear and the environment outside the ear, the channel is provided with a structural element for changing the size of the through-opening at at least one position. The structural element is a valve formed with electroactive material and the size of the through-opening is adjusted by application of a voltage to the valve.

Abstract: A device and a method are disclosed for the detection and/or for the quantification of an analyte. In at least one embodiment, the device includes a basic matrix and magnetized nanoparticles, which are arranged in moveable fashion in or at the basic matrix and to which catcher molecules that bind specifically to the analyte are anchored. Further, the mobility of the nanoparticle in the basic matrix can be influenced by a binding of the analyte to be detected to the catcher molecules and can be read out magnetically.

Abstract: For particularly good adaptation to a given hearing situation, an in-the-ear hearing device which has a housing with a channel in the housing that is designed as a through-opening for sound and air between the interior of the ear and the environment outside the ear, the channel is provided with a structural element for changing the size of the through-opening at at least one position. The structural element is a valve formed with electroactive material and the size of the through-opening is adjusted by application of a voltage to the valve.

Abstract: In a thermocatalytically active titanium dioxide coating, based on a sol-gel system, the titanium dioxide coating contains a structuring component and/or is produced by a structuring method.

Abstract: A transparent porous SiO2 coating for a transparent substrate material, for example polycarbonate, has advantageous antireflective properties. The coating is produced by a sol-gel process, at least one component which causes porosity being present during at least part of the sol-gel process and being removed and/or destroyed after the sol-gel process has ended. The at least one component which causes porosity is a polymer, the average molar mass of the polymer being preferably =5000 Da to =50 000 Da, more preferably =10 000 Da to =20 000 Da.

Abstract: A device for detecting at least one substance of a fluid includes at least one piezo-acoustic resonator with at least one piezo layer, an electrode arranged on the piezo-electric layer, at least one other electrode arranged on the piezo-electric layer and a surface section used for sorption of the substance of the fluid. The piezo-electric layer, the electrodes and the surface section are disposed in such a way that electric control of the electrodes leads to an oscillation of the resonator at a resonance frequency which depends upon the amount of the substance which is sorbed on the surface section. The thickness of the pioelectric layer is in the region of 0.5 to 20 ?m and the resonance frequency of the oscillation ranges from 500 MHz to 2 GHz. The device is a mass sensor with a piezo-acoustic high-frequency thin film resonator.

Abstract: A radically crosslinkable liquid composition is for producing a polyacrylamide-based hydrogel layer. The composition includes at least one comonomer with reactive linker groups and at least one optional softener in addition to the monomer precursor of the polyacrylamide, the crosslinking agent, and the radical initiator(s).

Abstract: A device and a method are disclosed for the detection and/or for the quantification of an analyte. In at least one embodiment, the device includes a basic matrix and magnetized nanoparticles, which are arranged in moveable fashion in or at the basic matrix and to which catcher molecules that bind specifically to the analyte are anchored. Further, the mobility of the nanoparticle in the basic matrix can be influenced by a binding of the analyte to be detected to the catcher molecules and can be read out magnetically.

Abstract: A device and a method are disclosed for carrying out nucleic acid tests. The device includes a substrate and one or more gel pads arranged on the substrate and designed so that at least one of the biological and chemical reactions necessary for the test takes place in them, particularly a polymerase chain reaction. A method for producing such a device is also disclosed.

Abstract: A device for detecting at least one substance of a fluid includes at least one piezo-acoustic resonator with at least one piezo layer, an electrode arranged on the piezo-electric layer, at least one other electrode arranged on the piezo-electric layer and a surface section used for sorption of the substance of the fluid. The piezo-electric layer, the electrodes and the surface section are disposed in such a way that electric control of the electrodes leads to an oscillation of the resonator at a resonance frequency which depends upon the amount of the substance which is sorbed on the surface section. The thickness of the pioelectric layer is in the region of 0.5 to 20 ?m and the resonance frequency of the oscillation ranges from 500 MHz to 2 GHz. The device is a mass sensor with a piezo-acoustic high-frequency thin film resonator.

Abstract: A photostructurable liquid composition is for producing a hydrogel layer based on polyacrylamide. The composition, in addition to containing the monomer precursor of the polyacrylamide, the cross-linking agent and the photoinitiator, contains at least one film former, at least one comonomer having reactive linker groups, and at least one softener.

Abstract: A hydrophilic immobilization layer for biosensors is made of a radically cross-linkable hydrogel based on polyacraylamide. The starting composition includes acrylamide, cross-linkers, radical initiator(s), at least one comonomer having reactive linker groups and optionally may include softeners. Alternatively, the inventive layer may be of a photostructured hydrogel based on polyacrylamide. The starting composition includes acrylamide, cross-linkers, photoinitiators, at least one film former, at least one comonomer having reactive linker groups and optionally may include softeners.

Abstract: Biochemical substances, such as enzymes, are immobilized using an olefinic-unsaturated, epoxyfunctional polysiloxane. The polysiloxane is applied to a carrier material. The polysiloxane on the carrier is cross-linked by using high-energy radiation or a peroxide to form a polymer matrix. The polymer matrix is treated with an aqueous solution of a biochemical substance that reacts with epoxy groups and becomes immobilized. The polymer matrix is stabilized by the reaction of non-reacted epoxy groups with a compound containing an amino group, a carboxyl group or an amino group and a carboxyl group. The crosslinked polysiloxane can be hydrophilized after cross-linking and prior to immobilization of the biochemical substance by the reaction of a portion of the epoxy groups with a hydrophilic compound.

Abstract: A biosensor is prepared having a selective detection system containing a biochemical substance such as an enzyme immobilized on an olefinic-unsaturated, epoxyfunctional polysiloxane. Prior to immobilization of the biochemical substance, the polysiloxane is applied as a layer to a carrier and cross-linked by treatment with high-energy radiation. A biochemical substance is reacted with epoxy groups of the cross-linked polysiloxane. Any non-reacted epoxy groups are reacted with a compound containing an amino group, a carboxyl group or an amino group and a carboxyl group to stabilize. After cross-linking and before reacting of the biochemical substance, the cross-linked polysiloxane can be hydrophilized by reacting some of the epoxy groups with a hydrophilic compound containing a reactive group.

Abstract: A biosensor is prepared having a selective detection system containing a biochemical substance such as an enzyme immobilized by reaction with epoxy groups of an olefinic-unsaturated, epoxyfunctional polyether. Prior to immobilization, the polyether is applied to a carrier and crosslinked by treatment with high-energy radiation or peroxide to form a layer. After reacting the biochemical substance with epoxy groups, non-reacted epoxy groups are reacted with a compound containing an amino group and/or a carboxyl group such as an amino acid. Before immobilizing of the biochemical substance and after crosslinking, the polyether may be hydrophilized by reacting some of the epoxy groups with a hydrophilic compound such as an amino acid.

Abstract: Biochemical substances such as enzymes are immobilized by reaction with epoxy groups of an olefinic-unsaturated, epoxyfunctional polyether. Prior to immobilization, the polyether is applied to a carrier and crosslinked by treatment with high-energy radiation or peroxide to form a layer. After reacting the biochemical substance with epoxy groups, non-reacted epoxy groups are reacted with a compound containing an amino group and/or a carboxyl group such as an amino acid. Before immobilizing of the biochemical substance and after crosslinking, the polyether may be hydrophilized by reacting some of the epoxy groups with a hydrophilic compound such as an amino acid.

Abstract: The invention provides a radiation-curable liquid resin useful as a secondary coating of lightwave guides. The resin is a reaction product of (meth)acrylic acid or glyceroldi(meth)acrylate or pentaerythritoltri(meth)acrylate with a 2:1 addition compound of a diepoxide and an .alpha.,.omega. -diol with a mean molecular weight between 600 and 3000, or, a reaction product of (meth)acrylic acid or -acid chloride or isocyanatoalkyl-(meth)acrylate with a conversion product of the 2:1 addition compound and a low-molecular monovalent alcohol C.sub.1 to C.sub.10), a low-molecular bivalent alcohol (C.sub.2 to C.sub.4) or water, where the diepoxide is an aromatic diglycidylether and the .alpha.,.omega. -diol is an .alpha.,.omega.-hydroxy-terminated polyoxyalkylene, an .alpha.,.omega. -hydroxy-terminated polyester, an .alpha.,.omega. -hydroxy-terminated polybutadiene or an .alpha.,.omega. -hydroxy-terminated organo-functional polysiloxane.

Abstract: The invention provides a radiation-curable liquid resin useful as a secondary coating of lightwave guides. The resin is a reaction product of (meth)acrylic acid or glyceroldi (meth)acrylate or Pentaerythritoltri(meth)acrylate with a 2:1 addition compound of a diepoxide and an .alpha., .omega.-diol with a mean molecular weight between 600 and 3000, or, a reaction product of (meth)acrylic acid or -acid chloride or isocyanatoalkyl-(meth)acrylate with a conversion product of the 2:1 addition compound and a low-molecular monovalent alcohol (C.sub.1 to C.sub.10), a low-molecular bivalent alcohol (C.sub.2 to C.sub.4) or water, where the diepoxide is an aromatic diglycidylether and the .alpha.,.omega.-diol is an .alpha., .omega.-hydroxy-terminated polyoxyalkylene, an .alpha., .omega.-hydroxy-terminated polyester, an .alpha.,.omega.-hydroxy-terminated polybutadiene or an .alpha.,.omega.-hydroxy-terminated organo-functional polysiloxane.