Abstract: A flexible circuit having a polyimide substrate containing at least one chemically etched feature, wherein such etched feature has sidewalls having a predetermined slope angle. It is possible to create etched features having predetermined slopes of from about 10 to about 70 degrees. Preferably, the flexible circuit was formed from a polyamic acid containing multiple ester groups in its main polymer chain.

Abstract: Liquid organic material is controllably delivered to a receptacle located in the center of a heated surface capable of horizontally rotating about its central axis. As the heated surface rotates, material deposited within the central receptacle is forced outwardly and across the rotating surface. As the material moves radially, it evaporates into a vapor which is then transported to one or more nozzles. From the nozzles, the vapor is applied to a substrate and condensed. Relative to existing devices and methods, the present invention enables the evaporation of a wider variety of organic liquids, greater reliability in continuous operation, a decrease in maintenance, and a larger and more constant material flow rate.

Abstract: A method for polymerizing a free-radical initiated adhesive syrup of an C8-13 alkyl acrylate monomer, optionally including one or more comonomers, by irradiating the adhesive syrup with about 20 to 100 kGy of accelerated electrons over a residence time of greater than 1 second at a temperature below 20° C. The method produces a pressure-sensitive adhesive with balanced peel adhesion, shear strength and conversion.

Abstract: A method for making particles coated with a diamond-like network, which can include additive components. The method comprises subjecting a multiplicity of particles to a carbon-based plasma in an evacuated radio frequency powered capacitively coupled reactor system in which ion sheaths are formed around the electrodes and wherein the particles are agitated in such a manner as to expose their surfaces to the reactive species in the plasma while keeping the particles substantially within an ion sheath.