摘要:
In one embodiment of the present invention, a microscale or sub-microscale signal line, interconnected with one set of parallel nanowires of a nanowire crossbar, serves as a multiplexer. The multiplexer is used to detect the conductivity state of a nanowire junction within the nanowire crossbar. In one method embodiment of the present invention, a first signal is output to the two nanowires interconnected by the nanowire junction, while a second signal is output to the remaining nanowires of the nanowire crossbar. Then, the second signal is output to the two nanowires interconnected by the nanowire junction, while the first signal is output to the remaining nanowires of the nanowire crossbar. The resulting signal detected on the multiplexer is reflective of the conductivity state of the nanowire junction.
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.
摘要:
A memory device (100) includes a semiconductor wire including a source region (132), a drain region (134), and a channel region (130) between the source region (132) and the drain region (134). A gate structure that overlies the channel region includes a memristive portion (120) and a conductive portion (110) overlying the memristive portion (120).
摘要:
A computing system for implementing at least one electronic circuit with gain comprises at least one two-dimensional molecular switch array. The molecular switch array is formed by assembling two or more crossed planes of wires into a configuration of devices. Each device comprises a junction formed by a pair of crossed wires and at least one connector species that connects the pair of crossed wires in the junction. The junction has a functional dimension in nanometers, and includes a switching capability provided by both (1) one or more connector species and the pair of crossed wires and (2) a configurable nano-scale wire transistor having a first state that functions as a transistor and a second state that functions as a conducting semiconductor wire. Specific connections are made to interconnect the devices and connect the devices to two structures that provide high and low voltages.
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:
Various embodiments of the present invention include three-dimensional, at least partially nanoscale, electronic circuits and devices in which signals can be routed in three independent directions, and in which electronic components can be fabricated at junctions interconnected by internal signal lines. The three-dimensional, at least partially nanoscale, electronic circuits and devices include layers, the nanowire or microscale-or-submicroscale/nanowire junctions of each of which may be economically and efficiently fabricated as one type of electronic component. Various embodiments of the present invention include nanoscale memories, nanoscale programmable arrays, nanoscale multiplexers and demultiplexers, and an almost limitless number of specialized nanoscale circuits and nanoscale electronic components.
摘要:
Various embodiments of the present invention are directed to crossbar-memory systems to methods for writing information to and reading information stored in such systems. In one embodiment of the present invention, a crossbar-memory system comprises a first layer of microscale signal lines, a second layer of microscale signal lines, a first layer of nanowires configured so that each first layer nanowire overlaps each first layer microscale signal line, and a second layer of nanowires configured so that each second layer nanowire overlaps each second layer microscale signal line and overlaps each first layer nanowire. The crossbar-memory system includes nonlinear-tunneling resistors configured to selectively connect first layer nanowires to first layer microscale signal lines and to selectively connect second layer nanowires to second layer microscale signal lines. The crossbar-memory system also includes nonlinear tunneling-hysteretic resistors configured to connect each first layer nanowire to each second layer nanowire at each crossbar intersection.
摘要:
A mold with a protruding pattern is provided that is pressed into a thin polymer film via an imprinting process. Controlled connections between nanowires and microwires and other lithographically-made elements of electronic circuitry are provided. An imprint stamp is configured to form arrays of approximately parallel nanowires which have (1) micro dimensions in the X direction, (2) nano dimensions and nano spacing in the Y direction, and three or more distinct heights in the Z direction. The stamp thus formed can be used to connect specific individual nanowires to specific microscopic regions of microscopic wires or pads. The protruding pattern in the mold creates recesses in the thin polymer film, so the polymer layer acquires the reverse of the pattern on the mold. After the mold is removed, the film is processed such that the polymer pattern can be transferred on a metal/semiconductor pattern on the substrate.
摘要:
Embodiments of the present invention are directed to cost-effective defect amelioration in manufactured electronic devices that include nanoscale components. Certain embodiments of the present invention are directed to amelioration of defects in electronic devices that contain nanoscale demultiplexers. In certain embodiments of the present invention, the nanoscale-demultiplexer-containing devices include reconfigurable encoders. In one embodiment of the present invention, the table of codes within a reconfigurable encoder is permuted, and a device is configured in accordance with the permuted codes, in order to produce a permuted table of codes that, when input to an appropriately configured nanoscale demultiplexer, produces correct outputs despite defects in the nanoscale demultiplexer.