Sputter desposition is a process for depositing atoms on a substrate
to be used in an electronic device. With this invention it is possible
to produce a multilayer structure of different materials in which
each layer is of very precise thickness and the interface between
layers is absolutely free of contamination. This apparatus includes a
stationary cathode, a rotatable anode, different target materials on
the cathode, elements bearing apertures to expose the targets, and
power means to control the electrical potentials of the system.

The invention is a method for making uniformly-shaped, porous, round beads. The beads may be used as adsorbents in chromatography and as markers for studies of cell surface receptors. The beads are prepared by the co-polymerization of an acrylic monomer and a cross-linking agent in the presence of 0.05 to 5% by weight of an aqueous soluble polymer such as polyethylene oxide. Cross-linking proceeds at high temperature above about 50°C or at a lower temperature with irradiation. Beads of even shape and even size distribution of less than 2 micron diameter are formed. The beads will find use as adsorbents in chromatography and as markers for studies of cell surface receptors.

There are numerous tasks involving the manipulation of an article from a remote location under the control of an operator who can place the grasping element in the proximity of the article, but cannot make the final positioning and orientation of the grasping element to successfully grasp the element. The present invention relates to a device which can make the final positioning and orientation to grasp the element. The invention incorporates a corner retroreflector, plane mirrors, photodectors and a pulsed light source to derive signals to achieve the final steps of grasping the element.

It is well known that the emitted pollutants of an internal combustion engine are considerably reduced as the fuel-to-air ratio is reduced. However, as the fuel-to-air ratio is reduced, a point is soon reached where the mixture is no longer flammable. It has been found, though, that an ultra lean mixture can be made flammable if mixed with a hydrogen rich gas. This invention is a mixing device which simultaneously atomizes liquid fuel, mixes this fuel with an optimal quantity of hydrogen and combines this mixture with a prescribed quantity of air. A throttling mechanism controls the fuel delivery to the engine and also limits the fuel to air equivalence ratio to a predetermined upper boundary to inhibit the production of air pollutants and to a lower boundry which is above the lean flammability of the mixture.

Computers and related equipment must be synchronized with one another in order to successfully transmit and receive control signals and data. If the computers are asynchronous, special means are required to transfer data and this invention relates to an interface logic system which, with a minimum of components and interconnecting lines, verifies that valid information transfer control signals exist and assures proper completion of a data strobe pulse. Thus, data transfer is effected without the requirement of both computers being on a master clock.