Showing papers by "Bruce E. Gnade published in 1990"
TL;DR: In this article, a detailed study of the synthesis variables that influence the encapsulation process in the case of SALEN-NaY is presented, as well as the rhodium-exchanged zeolites are characterized by elemental analysis and X-ray photoelectron spectroscopy.
55 citations
Patent•
24 Jul 1990TL;DR: In this article, a process for testing leaks of a package comprises the steps of introducing the package (20) into a chamber and pressurizing the chamber with a radioisotopic gas.
Abstract: A process for testing leaks of a package (20) comprises the steps of introducing the package (20) into a chamber (30) and pressurizing the chamber (30) with a radioisotopic gas (14). After the package (20) has been removed from the chamber (30), a plurality of detectors (46) sense the gamma-ray emission from the individual packages (29). A conveyor system (44) can be employed to move the packages (20) during high volume production.
3 citations
23 Apr 1990
TL;DR: In this paper, the rotation-induced superlattice properties of ternary and quaternary InGaAs and In(GaAl)As alloys on InP were investigated.
Abstract: In the molecular-beam-epitaxy growth of ternary and quaternary InGaAs and In(GaAl)As alloys on InP it is observed that the layer composition is ordered in the direction of growth. This ordering is caused by the nonuniform distribution of beam fluxes at the rotating substrate with an ordering period determined by the combined effects of growth rate and substrate rotation rate. The effect of the ordering is to produce a strained-layer superlattice whose properties can be inferred from the current-voltage characteristics of resonant-tunneling diodes. The physical and electrical characteristics of these rotation-induced superlattices are described utilizing several one-dimensional theoretical approaches to calculate the miniband structure and interpret the experimental data. >
2 citations
TL;DR: Nuclear resonance reaction analysis was used to determine hydrogen concentration in polycrystalline metallo-organic chemically vapor-deposited ZnS films produced at low substrate temperatures and pressures as discussed by the authors.
1 citations