Now showing items 11-19 of 19
A method of image plane multiplex holography
(Elsevier, 1983-11-15)
A method for making image plane multiplex holograms is described. These exhibit the full 3-D imagery of conventional multiplex holograms, but can be made without the use of coherent light. A similarity to lenticular ...
An image deblurring method using diffraction gratings
(Elsevier, 1981-01-15)
A method of image deblurring is described, in which the restoration filter is derived from Ronchi rulings. Although two-dimensional spatial filtering is used, the method employs a line source, resulting in significant noise ...
Design, fabrication and operation of a hot electron resonant tunneling transistor
(Elsevier, 1989-12)
Transistors employing resonant tunneling injection of hot electrons into a thin quantum well base region have been fabricated. The base region in these transistors is formed by a narrow bandgap material like InGaAs so that ...
Diffusion effects in short-channel GaAs MESFETs
(Elsevier, 1989-03)
Diffusion effects in short-channel GaAs MESFETs are studied using a two-dimensional electron temperature simulation. A structure that consists of two n+-n contacts on a thin channel region was used as a test vehicle for ...
Application of fast Fourier transforms to EPR spectra of free radicals in solution
(Elsevier, 1980-08)
A method of reducing EPR spectra of free radicals in solution is presented in detail. This method is based on the use of the fast Fourier transform algorithm and curve fitting in the Fourier space by weighted least-squares ...
Analytic modeling of transit-time device drift regions with field-dependent transport coefficients
(Elsevier, 1981-01)
An iterative procedure for obtaining two-carrier d.c. solutions in regions of rapidly varying carrier concentration is presented. The procedure uses an analytic solution for the carrier concentrations in a region of linear ...
Material properties and optical guiding in InGaAs-GaAs strained layer superlattices--a brief review
(Elsevier, 1986-02)
Due to the absence of lattice-matching requirements, strained-layer superlattices offer a large tunability in bandgap and other material properties suitable for device applications. Encouraging progress has been made in ...
Thermal, magnetic and structural aspects of transitions in Mn0.63Cr0.37As. Thermodynamic properties from 10 to 350 K
(Elsevier, 1987-02)
Subambient crystallographic and magnetic structures and heat capacity on Mn0.63Cr0.37As are measured below 350 K. A complex first order magnetic (helimagnetic Ha- to Hc-type) and structural (MnP- to MnP-type) transition, ...
57Fe hyperfine interaction parameters and selected magnetic properties of high purity MFe12O19 (M=Sr, Ba)
(Elsevier, 1987-05)
Much of the confusion regarding the 57Fe Mossbauer spectroscopic hyperfine parameters of SrFe12O19 and BaFe12O19 at 300 K has been removed by means of an interlaboratory investigation of well-characterized samples prepared ...