Abstract: A process for the storage of information units in a nanometer range involves producing cup-like pits in a noble-metal surface.

Abstract: Ultrathin thermostable bismaleimide films are produced by converting Langmuir-Blodgett layers of ionic precursors based on bismaleamide.

Abstract: A high-sensitivity surface wave gas sensor in which the interaction of a surface wave field with a solid film suitable for adsorbing the gas to be determined causes a change in the frequency of an oscillating circuit containing a surface wave delay line as a function of the type and concentration of the gas entails the delay line provided for adsorption of the gas being completely coated with the solid film, and the dimensions of the delay lines being such that the length of the surface wave transformer is greater than that of the delay line.

Abstract: Novel (meth)acrylate copolymers which contain, as polymerized units,A) one or more (meth)acrylates and/or (meth)acrylamides having second order nonlinear optical properties and of the general formula I ##STR1## where R is hydrogen or methyl, X is a flexible spacer, which may or may not be present, Y is a divalent group having electron donor activity and Z is a noncentrosymmetric radical containing an easily polarizable conjugated .pi.-electron system and one or more electron acceptor groups, andB) one or more (meth)acrylates of alkanols where the alkyl radical is of 10 to 30 carbon atomsin a molar ratio of (A) to (B) of from 1:0.5 to 1:5 are very suitable as nonlinear optical materials for nonlinear optical arrangements and for the production of Langmuir-Blodgett films.

Abstract: The novel compounds of the general formula I ##STR1## where X is straight-chain or branched alkanediyl having from 1 to 20 carbon atoms orX is straight-chain or branched alkanediyl having from 2 to 20 carbon atoms, whose carbon chain is interrupted by --O--, --S-- and/or --NR--,R is hydrogen, straight-chain or branched alkyl having from 1 to 6 carbon atoms or cycloalkyl, andY is a non-centrosymmetric radical containing an easily polarized conjugated .pi.-electron system and at least one terminal electron-acceptor group,having nonlinear optical properties, are highly suitable as nonlinear optical materials for nonlinear optical arrangements and for the preparation of polymers having nonlinear optical properties. In particular, they can be used to prepare organopolysiloxanes having nonlinear optical properties and containing side groups of the general formula Ia ##STR2## in which the variables are as defined above.

Abstract: Information stored in a thin polymer layer is read out in a process wherein information introduced into a thin polymer layer on a metallic or semiconductor layer by electromagnetic or particle rays which produce a permanent change in the properties of the polymer layer in the irradiated areas is read out using surface plasmons.

Abstract: A highly sensitive strain gage containing a thin discontinuous metal layer whose conduction effect is based predominantly on the tunnel effect and which is applied uniformly onto a thin, nonmetallic, dielectric or semiconducting substrate such as uniaxially oriented or partially crystalline plastic film, an ordered ultrathin layer or a silicone-coated plastic film, the diffusion processes in the applied metal layer being reduced and its structural stability improved as a result of interaction of the substrate with the metal layer.

Abstract: A resist image is produced from a high-resolution, radiation-sensitive resist material by a process in which paraffin is applied as a resist material in a thin layer onto a substrate and irradiated in a predetermined pattern, for example by means of an electron beam, with crosslinking, and the non-irradiated, non-crosslinked parts of the resist layer are then removed. Particularly advantageously, the resist layer consisting of the paraffin is applied onto the substrate by vapor deposition and, after imagewise irradiation, the non-irradiated parts of the resist layer are removed by evaporation in order to develop the resist image.