Abstract: Nanocrystals are synthesized with a high degree of control over reaction conditions and hence product quality in a flow-through reactor in which the reaction conditions are maintained by on-line detection of characteristic properties of the product and by adjusting the reaction conditions accordingly. The coating of nanocrystals is achieved in an analogous manner.

Abstract: A method for specifically and uniformly synthesizing desired polymers within molecular array elements. Droplets containing a reactive monomer are successively applied to the elements of a molecular array in order to synthesize a substrate-bound polymer. Application of an initial droplet, having a first volume, defines the position and size of a molecular array element. Subsequent droplets are applied, to add successive reactive monomers to growing nascent polymers within the molecular array element, with covering volumes so that, even when application of the subsequent droplets is misregistered, the entire surfaces of the elements of the molecular array are exposed to the subsequently applied droplets. Following application of initial droplets, the surface of the molecular array is exposed to a solution containing a very efficient capping agent in order to chemically cap any unreacted nascent growing polymers and any unreacted substrate molecules.

Abstract: Nanocrystals are synthesized with a high degree of control over reaction conditions and hence product quality in a flow-through reactor in which the reaction conditions are maintained by on-line detection of characteristic properties of the product and by adjusting the reaction conditions accordingly. The coating of nanocrystals is achieved in an analogous manner.

Abstract: Nanocrystals are synthesized with a high degree of control over reaction conditions and hence product quality in a flow-through reactor in which the reaction conditions are maintained by on-line detection of characteristic properties of the product and by adjusting the reaction conditions accordingly. The coating of nanocrystals is achieved in an analogous manner.

Abstract: Nanocrystals are synthesized with a high degree of control over reaction conditions and hence product quality in a flow-through reactor in which the reaction conditions are maintained by on-line detection of characteristic properties of the product and by adjusting the reaction conditions accordingly. The coating of nanocrystals is achieved in an analogous manner.

Abstract: A method for specifically and uniformly synthesizing desired polymers within molecular array elements. Droplets containing a reactive monomer are successively applied to the elements of a molecular array in order to synthesize a substrate-bound polymer. Application of an initial droplet, having a first volume, defines the position and size of a molecular array element. Subsequent droplets are applied, to add successive reactive monomers to growing nascent polymers within the molecular array element, with covering volumes so that, even when application of the subsequent droplets is misregistered, the entire surfaces of the elements of the molecular array are exposed to the subsequently applied droplets. Following application of initial droplets, the surface of the molecular array is exposed to a solution containing a very efficient capping agent in order to chemically cap any unreacted nascent growing polymers and any unreacted substrate molecules.

Abstract: A method for specifically and uniformly synthesizing desired polymers within molecular array elements. Droplets containing a reactive monomer are successively applied to the elements of a molecular array in order to synthesize a substrate-bound polymer. Application of an initial droplet, having a first volume, defines the position and size of a molecular array element. Subsequent droplets are applied, to add successive reactive monomers to growing nascent polymers within the molecular array element, with covering volumes so that, even when application of the subsequent droplets is misregistered, the entire surfaces of the elements of the molecular array are exposed to the subsequently applied droplets. Following application of initial droplets, the surface of the molecular array is exposed to a solution containing a very efficient capping agent in order to chemically cap any unreacted nascent growing polymers and any unreacted substrate molecules.

Abstract: Compounds having the formula ##STR1## in which R is methyl or ethyl, Y is sulfur or oxygen, and R.sub.1 and R.sub.2 are the same or different tertiary alkyl groups each having from 4 to 6 carbon atoms, are insecticides and nematicides, especially for control of soil insects and nematodes.Symmetrical compounds (R.sub.1 .dbd.R.sub.2) may be prepared by reaction of an alkali metal mercaptide with an alkyl (thio) phosphonic dihalide. The alkali metal mercaptide may be prepared by reaction of a tertiary alkyl mercaptan with an alkali metal or alkali metal hydride.

Abstract: Alkali metal aluminum silicate scale deposits are removed from surfaces of chemical processing equipment by alternating treatments with acidic and basic solutions, with optional rinsing of the equipment between treatments.