Abstract: A Fermi-threshold field effect transistor includes a contoured-tub region of the same conductivity type as the source, drain and channel regions and having nonuniform tub depth. The contoured-tub is preferably deeper under the source and/or drain regions than under the channel region. Thus, the tub-substrate junction is deeper under the source and/or drain regions than under the channel region. The diffusion capacitance is thereby reduced compared to a tub having a uniform tub depth, so that a high saturation current is produced at low voltages. The contoured-tub may be formed by an additional implant into the substrate using the gate as a mask.

Abstract: A method and apparatus for enhancing the nucleation of diamond by pretreating a substrate by electrically biasing a diamond film adjacent the substrate while exposing the substrate and the thus biased diamond film to a carbon-containing plasma. The bias pretreatment may be maintained for a time period in the range of about 1 hour to 2 hours to achieve a high diamond nucleation density. Alternatively, the biasing may be continued until diamond film formation is indicated by a change in reflectivity of the surface of the substrate. The biasing pretreating may be used to nucleate diamond heteroepitaxially on a substrate having a surface film formed of a material having a relatively close lattice match to diamond, such as .beta.-silicon carbide. The apparatus includes a laser reflection interferometer to monitor the surface of the substrate.

Abstract: The invention comprises a self-cleaning injection system for injecting foamable compositions into packaging applications. The system comprises an injection nozzle having an opening in one end from which mixed foam precursors which form foamable compositions may exit. The one end comprises a tip assembly which is porous to gases and to certain liquids, but which is impermeable to other materials such as the foamable compositions which may otherwise exit the housing only through said opening. A pump assembly pumps cleaning solvent from a solvent container to the injection nozzle while maintaining a constant delivery of air or a mixture of air and solvent to the injection nozzle. The pump assembly comprises a solvent container and an air compressor for sending air to the solvent container and for sending a mixture of solvent and air from the solvent container to said injection nozzle.

Abstract: This athletic brassiere provides firm breast support during vigorous activity by the wearer to prevent chafing and tenderness of the breasts, particularly when running, jogging and the like. The brassiere is formed primarily of non-stretchable fabric and includes a pair of two-way stretchable elastic back panels (20, 20') and cooperating stretchable support bands (22,22') which provide for expansion of the chest to permit comfortable breathing of the wearer and free movement of the upper body parts while providing firm support and limiting vertical and lateral movement of the breasts of the wearer. Resilient breast protection pads (P, P') are adapted to be removably positioned in breast supporting cups (C, C') for protecting the breasts from blows or the like.