Abstract: A semiconductor, injection mode light emitting device includes a body of a semiconductor material having a quantum mode region formed of alternating layers of gallium nitride and either indium nitride or aluminum nitride. A region of N-type gallium nitride is on one side of the quantum well region and is adapted to inject electrons into the quantum mode region. A region of P-type gallium phosphide is on the other side of the quantum well region and is adapted to inject holes into the quantum mode region. A barrier region of insulating gallium nitride is between the P-type region and the quantum well region and serves to block the flow of electrons from the quantum well region into the P-type region. Conductive contacts are provided on the N-type region and the P-type region.
Abstract: Superconducting material improves the operating efficiency and reduces the operating power demand for a disk drive suitable for interchanging data with a magnetic or optic media. The arm containing the head is moved along a path by a balanced superconductor to magnetic field interface such as for radial positioning relative to a circular media and is maintained in constant spatial relation with respect to the media by advantageous application of superconductive layers and magnetic field sources. The superconductor environment also permits efficient bearing support for the media as well as accommodating superconductor motors for driving the media and the use of various circuit elements associated with the drive electronics.
Abstract: Chiral, nonracemic compounds of the general formula: ##STR1## wherein n=1 or 2, Y is a hydrogen, fluorine, chlorine or bromine atom, R' is an alkyl or alkoxy group having three to fifteen carbons, and R is an alkyl group having three to fifteen carbons, which are useful as ferroelectric liquid crystal components having high polarization are described. Also described are compounds of the same general formula in which X is OH, which are useful as synthetic intermediates in the preparation of the FLC components of the present invention.
Type:
Grant
Filed:
September 21, 1987
Date of Patent:
May 30, 1989
Assignee:
The University of Colorado Foundation, Inc.
Abstract: Articles exhibiting fabricated structures with nanometer size scale features (nanostructures), typically a device comprising nanostructures of a functional material on or in a substrate of dissimilar material, are produced by a method employing a substrate base or coating and a thin layer serving as a lithographic mask or template, consisting of a self-assembled ordered material array, typically a periodic array of molecules such as undenatured proteins, exhibiting holes, thickness or density variations. It is possible to produce complex structures containing large numbers of nanometers scale elements through a small number of simple steps.
Type:
Grant
Filed:
December 23, 1987
Date of Patent:
February 7, 1989
Assignees:
Trustees of Boston University, University of Colorado Foundation, Inc.
Inventors:
Noel A. Clark, Kenneth Douglas, Kenneth J. Rothschild
Abstract: Articles exhibiting fabricated structures with nanometer size scale features (nanostructures), typically a device comprising nanostructures of a functional material on or in a substrate of dissimilar material, are produced by a method employing a substrate base or coating and a thin layer serving as a lithographic mask or template, consisting of a self-assembled ordered material array, typically a periodic array of molecules such as undenatured proteins, exhibiting holes, thickness or density variations. It is possible to produce complex structures containing large numbers of nanometers scale elements through a small number of simple steps.
Type:
Grant
Filed:
March 7, 1986
Date of Patent:
March 1, 1988
Assignees:
Trustees of Boston University, University of Colorado Foundation, Inc.
Inventors:
Noel A. Clark, Kenneth Douglas, Kenneth J. Rothschild
Abstract: The present invention discloses a bi(3,5-dimethyl-5-hydroxymethyl-2-oxomorpholin-3-yl) compound and its efficacy as a rescue agent against anthracycline and mitomycin C induced tissue damage. A method of synthesizing said compound has also been described.
Type:
Grant
Filed:
October 24, 1985
Date of Patent:
December 30, 1986
Assignees:
The United States of America as represented by the Department of Health and Human Services, University of Colorado Foundation, Inc.
Inventors:
Steven D. Averbuch, Nicholas R. Bachur, Giorgio Gaudiano, Tad H. Koch