Miniature Ring-Orbitron Getter Ion Vacuum Pumps

Miniature ring-orbitron getter ion pumps have been proposed for supplying high vacuums to advanced scientific instruments expected to be developed in the next few years. Examples of such...

Apparatus for Testing Vacuum Torsional Dampers

A laboratory apparatus called a "vacuum damper investigation and performance evaluation robot" ("V-DIAPER") affords capabilities for vacuum dynamic testing of torsional dampers. The apparatus...

A Solid-State Alternative to the Vacuum Photomultiplier Tube

There are a number of important OEM photonic applications based on the detection of low incident light levels, including flow cytometry, PET (positron emission tomography) imaging,...

Lead Bromide Crystals Doped With Silver Bromide

Doping with silver bromide has been found to be an effective technique for enhancing the optical homogeneity and other qualities of single crystals of lead bromide. These crystals are grown...

High-Performance Thermoelectric Materials Based on β-Zn4Sb3

Materials based on β-Zn₄Sb₃have been found to exhibit unusually high values of the dimensionless thermoelectric figure of merit at temperatures between 200...

Manipulation of Liquids by Use of Sound: Part II

Acoustic-radiation pressure can be used to improve performance in the dispensing of liquid drops into gases or vacuum and in dispensing gas bubbles into liquids. In a typical application...

Fabricating Refractory-Metal Solar-Engine Components by VPS

Vacuum plasma spraying (VPS) has been demonstrated to be an effective technique for the fabrication of refractory-metal components of solar-thermal engines. Heretofore, such...

Vacuum Three-Ball Tribometer for Testing Liquid Lubricants

A three-ball tribometer has been developed for use in evaluating the performances of oils and greases as lubricants in a vacuum at room temperature. This apparatus differs from the...

TRL Fixture for Cryogenic Testing of Microwave Components

A single-block fixture enables the rapid and accurate electrical characterization of planar microwave electronic components, by use of the through-reflect-line (TRL) technique, in...

Ion-Beam-Deposited DLC Coatings on Fine-Grain CVD Diamond

Ion-beam-deposited surface layers of diamond-like carbon (DLC) on fine-grain chemical-vapor-deposited (CVD) diamond have been found to be effective in reducing friction and wear in a...

Delta-Doped CCDs as Low-Energy-Particle Detectors

Charge-coupled devices (CCDs) of a type developed previously for imaging in ultraviolet light have been found to be useful as detectors of electrons and other charged particles with kinetic...

Apparatus for Coating and Cold Welding in Vacuum

The figure illustrates selected aspects of a manually actuated apparatus for use in coating two small objects with suitable metals, then forcing the two objects together at the coated flat...

Reflective Coating System for High-Temperature Vacuum Use

A substrate of nickel coated with a thin layer of silver and further coated with a thin protective layer of silicon dioxide has been found to constitute an optically reflective...

Sonochemical Treatment To Remove Hydrazines From Water

A sonochemical treatment has been proposed for removing hydrazine contaminants from water. The basis of the proposal is a conjecture that the sonochemical effect in water containing...

Fabricating Diffusion-Cooled Hot-Electron-Bolometer Elements

Microbridges that constitute the superconducting-transition sensory elements of electron-diffusion-cooled hot-electron bolometers can now be fabricated in increased yield and...