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High-Density, High-Bandwidth, Multilevel Holographic Memory
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Date added: 04/01/2008 |
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A new concept was developed of using multilevel holograms to replace the binary-valued holograms to increase the storage density and data transfer bandwidth without significantly increasing the HM system volume/mass/power consumption. |
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Tailored Asymmetry for Enhanced Coupling to WGM Resonators
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Date added: 03/01/2008 |
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We have built several working prototypes of dipolar (elliptical cross section) and monopolar (roughly speaking, an ‘egg-shaped’ cross section) resonators from lithium niobate. To our knowledge, these are the first demonstration of such resonators in optical crystals. |
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Phase Calibration of Antenna Arrays Aimed at Spacecraft
hot!
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Date added: 03/01/2008 |
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This technology pertains to calibration of uplink arrays using power measurements from a nearby spacecraft. |
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Breadboard Signal Processor for Arraying DSN Antennas
hot!
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Date added: 03/01/2008 |
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This work is a breadboard implementation of architecture for arraying a high number of antennas (greater than 100) that combines signal processing for a wideband FX correlator with a combiner for beamforming. |
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Split-Block Waveguide Polarization Twist for 220 to 325 GHz
hot!
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Date added: 03/01/2008 |
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The new technology reported here allows waveguide polarization twists to be integrated directly into standard split-block waveguide circuits using common fabrication methods including end-milling or silicon deep reactive ion etching (DRIE.) The result is scalable
to circuits operating at frequencies of at least 5 THz. |
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Nano-Multiplication-Region Avalanche Photodiodes and Arrays
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Date added: 03/01/2008 |
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Two structural novelties are incorporated in Nano-multiplication-region Avalanche Photodiode (NAPD) and its arrays. At the time of this reporting, these two structural features were unique and not yet reported in any avalanche photodiodes. |
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Disabling CNT Electronic Devices by Use of Electron Beams
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Date added: 03/01/2008 |
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By using 1 keV electron beam (from an SEM), a particular nanotube can be rendered dysfunctional. Thus, excess CNTs in a device can be burnt, leaving only one CNT active, e.g., as a channel of a FET. |
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Dot-in-Well Quantum-Dot Infrared Photodetectors
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Date added: 02/01/2008 |
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We are developing DWELL-QDIPs based on InGaAs QDs embedded in the lattice-matched GaAs/AlGaAs materials system, in which we have extensive experience in growth and fabrication of FPAs. Using this lattice-matched materials system we should be able to stack 50-100 InGaAs QDs in a GaAs/AlGaAs DWELL device structure. Therefore, we expect at last an order of magnitude higher quantum efficiency and responsivity from InGaAs/GaAs/AlGaAs DWELL-QDIPs
compared to lattice mismatched InGaAs/InGaAs/GaAs DWELL-QDIPs. |
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Increasing Discharge Capacities of Li-(CF)n Cells
hot!
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Date added: 02/01/2008 |
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Increasing the discharge capacity of Li-(CF)n batteries, while maintaining high practical specific energy, would open new applications for these battery cells. This issue is addressed here. |
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Integrated Microbatteries for Implantable Medical Devices
hot!
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Date added: 02/01/2008 |
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This innovation proposes to use the device housing the tube to also be the main battery package to maximize energy density while minimizing excess packaging materials. The battery will use a liquid electrolyte consisting of a Li-based salt and appropriate solvent. |
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