摘要:
An analog to digital converter includes a dielectric substrate, an analog input wire, and digital output wires, with a metal insulator extending over the digital output wires. The analog input wire can be in proximity to the dielectric substrate and can generate heat when an electric current flows through the analog input wire. The digital output wires can also be in proximity to the dielectric substrate. The metal insulator can have a phase transition temperature above which the metal insulator is electrically conductive to short circuit at least one of the digital output wires in contact with a metal insulator portion above the phase transition temperature. The digital output wires can be arranged at predetermined distances from the analog input wire such that output wires have varying short circuit thresholds.
摘要:
A programmable analog filter includes a crossbar array with a number of junction elements and a filter circuit being implemented within the crossbar array. At least a portion of the junction elements form reprogrammable components within the filter circuit. A method for using a programmable analog filter is also provided.
摘要:
An analog to digital converter includes a dielectric substrate, an analog input wire, and digital output wires, with a metal insulator extending over the digital output wires. The analog input wire can be in proximity to the dielectric substrate and can generate heat when an electric current flows through the analog input wire. The digital output wires can also be in proximity to the dielectric substrate. The metal insulator can have a phase transition temperature above which the metal insulator is electrically conductive to short circuit at least one of the digital output wires in contact with a metal insulator portion above the phase transition temperature. The digital output wires can be arranged at predetermined distances from the analog input wire such that output wires have varying short circuit thresholds.
摘要:
A frequency source and a method of frequency generation employ a memristive negative differential resistance (M-NDR) voltage controlled oscillator (VCO). The frequency source includes a first M-NDR VCO of a plurality of memristive VCOs to provide a first signal having a first signal frequency. The frequency source further includes a second M-NDR VCO of the plurality to provide a second signal having a second signal frequency. The first and second M-NDR VCOs are interconnected with the plurality of memristive VCOs. The first and second M-NDR VCOs have independent programmable states and are connected to a common output of the frequency source. The method includes providing an M-NDR VCOs, where each M-NDR VCO includes an M-NDR device connected in parallel with a capacitance, and applying a bias voltage to activate a selected M-NDR VCO of the plurality to produce a frequency output.
摘要:
A programmable analog filter includes a crossbar array with a number of junction elements and a filter circuit being implemented within the crossbar array. At least a portion of the junction elements form reprogrammable components within the filter circuit. A method for using a programmable analog filter is also provided.
摘要:
A switching device includes at least one bottom electrode and at least one top electrode. The top electrode crosses the bottom electrode at a non-zero angle, thereby forming a junction. A metal oxide layer is established on at least one of the bottom electrode or the top electrode. A molecular layer including a monolayer of organic molecules and a source of water molecules is established in the junction. Upon introduction of a forward bias, the molecular layer facilitates a redox reaction between the electrodes, thereby reducing a tunneling gap between the electrodes.
摘要:
Embodiments of the present invention include dense, but accessible and well-interconnected component arrangements within multi-component systems, such as high-end multi-processor computer systems, and methods for constructing such arrangements. In a described embodiment, integrated-circuit-containing processing components, referred to as a “flat components,” are arranged into local blocks of intercommunicating flat components. The local flat-component blocks are arranged into interconnected, primitive multi-local-block repeating units, and the primitive local-block repeating units are layered together in a three-dimensional, regularly repeating structure that can be assembled to approximately fill any specified three-dimensional volume. The arrangement provides for relatively short, direct pathways from the surface of the specified volume to any particular local block and flat component within the three-dimensional arrangement.
摘要:
Dynamically reconfigurable holograms with electronically erasable programmable intermediate layers are disclosed. An example apparatus includes first nanowires, each of the first nanowires having protuberances along a length thereof. The example apparatus also includes second nanowires arranged approximately perpendicular to the first nanowires, the protuberances of the first nanowires being approximately parallel to corresponding ones of the second nanowires. In addition, a layer is disposed between the first and second nanowires. The layer is to control refractive indices at nanowire intersections at intersecting ones of the first and second nanowires.
摘要:
Various embodiments of the present invention are directed to systems and methods for obtaining images of objects with higher resolution than the diffraction limit. In one aspect, a method for collecting evanescent waves scattered from an object comprises electronically configuring a reconfigurable device to operate as a grating for one or more lattice periods using a computing device. Propagating waves scattered from the object pass through the reconfigurable device and a portion of evanescent waves scattered from the object are projected into the far field of the object. The method includes detecting propagating waves and detecting the portion of evanescent waves projected into the far field for each lattice period using an imaging system.
摘要:
Nanowire-based opto-electronic devices including nanowire lasers, photodetectors and semiconductor optical amplifiers are disclosed. The devices include nanowires grown from single crystal and/or non-single surfaces. The semiconductor optical amplifiers include nanowire arrays that act as ballast lasers to amplify a signal carried by a signal waveguide. Embodiments of the nanowire lasers and photodetectors include horizontal and vertical nanowires that can provide different polarizations.