摘要:
Noise and fault tolerant devices made of cellular automata are disclosed. Preferred embodiments include cellular automata with updating rules that set a cell to a first state if more than a threshold number of adjacent cells are in the first state and with output being a state average over all cells; thus updating overcomes noise and fault induced state changes. Embodiments with cells as discrete electronic devices and with cells as quantum wells in a monolithic semiconductor body are disclosed.
摘要:
A three terminal tunneling device analogous to a field effect transistor is disclosed. Preferred embodiments include a planar quantum well (52) with a gate insulator (56) and gate (58) on one surface and with a tunneling barrier (54) and source (62) and drain (60) on the other surface. The conduction current comprises electrons tunneling from the source (62) into the well (52) and then out into the drain (60). The gate (58) bias shifts the well subband levels up and down to establish and disrupt resonance for the tunneling from the source (62) into the well (52). Other preferred embodiments include interdigitated source and drain, multiple gates, multiple wells, and floating gates.
摘要:
Fiber optic coupler for coupling two mutually isolated optical fibers to a third union fiber rapidly and easily. Two mechanical elements are used, the first one being a hollow cylinder with an inside diameter equal to twice the fiber outside diameter, and the second being a second hollow cylinder with an inside diameter equal to one fiber diameter and an outside diameter equal to twice the fiber diameter. The union fiber is inserted into the smaller cylinder, the two mutually isolated fibers are inserted into the larger cylinder, the empty space in the larger cylinder is filled with an index-matching cement, and the two cylinders are then pushed together. This provides a simple and economical assembly of a coupler which will work for plastic fibers, and does not require any expensive manufacturing steps. Preferably stainless steel is used for the two cylinders.
摘要:
In accordance with the present disclosure, a method for sensing vital signs of a victim includes positioning a transmitter pod near a victim. The transmitter pod transmits a source signal. A reflected signal is created by reflecting the source signal off the victim. The source signal is directly received by a receiver that is remote from the victim and the transmitter pod. The receiver also receives the reflected signal, which is compared with the source signal. At least one vital sign is determined based on this comparison, and this vital sign is displayed. The vital sign may be the victim's heart rate or respiration rate.
摘要:
An apparatus includes a temperature detector coupled to a conductive layer of an electrophoretic display device. The temperature detector is operable to measure a leakage current that is responsive to a temperature associated with the electrophoretic device and determine the temperature associated with the electrophoretic device based at least in part on the measured leakage current.
摘要:
An apparatus for modulating light includes a first electrode, a second electrode, and a sealed enclosure. The first electrode includes a frequency selective surface operable to reflect light having a first wavelength, and the second electrode is spaced apart from the first electrode. The sealed enclosure stores electrophoretic fluid and at least a portion of the sealed enclosure is positioned between the first electrode and the second electrode. A plurality of particles are suspended in the electrophoretic fluid. The particles are capable of absorbing light having the first wavelength. In addition, the first electrode is capable of attracting the particles towards the frequency selective surface when an electrical bias is applied between the first electrode and the second electrode.
摘要:
According to one embodiment, an energy conversion device comprises a nuclear battery, a light source coupled to the nuclear battery and operable to receive electric energy from the nuclear battery and radiate electromagnetic energy, and a photocell operable to receive the radiated electromagnetic energy and convert the received electromagnetic energy into electric energy. The nuclear battery comprises a radioactive substance and a collector operable to receive particles emitted by the radioactive substance.
摘要:
A system for locating impacts comprises at least one array of a plurality of carbon nanotubes, each carbon nanotube operable to emit electrical activity when compressed. The system also comprises at least one sensor coupled to the at least one array configured to detect emitted electrical activity from the plurality of carbon nanotubes. Furthermore, a computer is configured to determine the location of an impact on the at least one array in response to the detected emitted electrical activity from the plurality of carbon nanotubes.
摘要:
A method in accordance with particular embodiments includes receiving an electrical control signal. The method further includes adjusting a reflectance of a light modulating stack comprising a plurality of layers by changing the relative location of a plurality of electrophoretic particles with respect to the remainder of the light modulating stack. The method additionally includes receiving light waves from a light source. The method also includes converting the electrical control signal into a modulated optical signal that selectively switches between reflecting or absorbing at least a portion of the light waves.