57 results about "Energy transition" patented technology

Multi-wavelength optical apparatus includes an optical emitter, and an energy transition layer positioned adjacent to the optical emitter. The energy transition layer generates multi-wavelength electromagnetic radiation when monochromatic light from the optical emitter passes therethrough. The energy transition layer includes a plurality of luminescent films, and each film is configured to luminesce at a respective different wavelength range when monochromatic light from the optical emitter passes therethrough. The plurality of luminescent films may be arranged in contacting face-to-face relationship or may be arranged in an array. The luminescent films may include rare-earth doped oxides, phosphors, metal-doped oxides, rare-earth doped nitrides, nanostructures, and / or nanostructured films, etc. The optical emitter may be a light emitting diode (LED), a laser diode (LD), an organic light-emitting diode (OLED), a resonant cavity light emitting diode (RCLED), and / or an edge-emitting diode (EELED).

The invention belongs to the energy transition material preparation technical field, in particular relate to a preparation method for lithium iron phosphate composite materials. The preparation method of the invention comprises the following steps: firstly, gulf red, phosphorus source, lithium source and carbon source are mixed in proportion; secondly, uniform ball milling is performed; thirdly, spray drying is performed; fourthly, high temperature heat treatment is performed under the protection of inoxidizing atmosphere, and then the lithium iron phosphate composite materials are obtained with an average grain diameter of 0.1 to 10 micrometers and a tap density of 1.2 to 1.5 gram per cubic centimeter. After the lithium iron phosphate composite materials are assembled into a battery, first discharge specific capacity of 0.2C multiplying power under room temperature can reach 150 to 160 mAh / g, and first discharge specific capacity of 1C multiplying power under room temperature can reach a high specific capacity of 140 to 150 mAh / g; after circulation for 100 times under various different multiplying powers, reversible capacity can still reach over 90 percent of the original capacity, thereby cyclicity is high. Moreover, safety is good, and the battery is environment friendly and has low cost, and can be widely applied in mobile telephones, notebook computers, various portable devices and the electric motor car field.

The invention relates to a continuous production technology of a polytetrafluoroethylene membrane with an electromechanical energy transition function. The technology comprises two parts consisting of a heat bonding step of a microporous composite membrane and a charging step of the composite membrane, wherein the heat bonding step of the microporous composite membrane is characterized in that: there are at least two compact polytetrafluoroethylene membranes, the composite membrane is prepared through arranging a layer of the porous polytetrafluoroethylene membrane between each adjacent polytetrafluoroethylene membranes to form an alternatively laminated layer, the alternatively laminated layer is introduced into a space between an upper hot press roll and a lower hot press roll, and a polytetrafluoroethylene piezoelectret membrane is obtained through charging the composite membrane; and the charging step of the composite membrane is that: the composite membrane enters a space between an electrode roll and a corona electrode and corona polarization is carried out, or is that: the composite membrane enters an electroplating zone, electrodes are adhered on the upper surface and the lower surface of the composite membrane, and then the composite membrane enters a contact method charging zone. The continuous production technology of the invention has the advantages of continuity and high production efficiency, and products of the polytetrafluoroethylene membrane with the electromechanical energy transition function have excellent piezoelectric performances and high temperature performances.

The invention discloses a remote pump transmission system which utilizes the Stimulated Raman effect to improve pumping performance, which comprises a transmitting end and a receiving end of an optical transmission system and a remote pump amplifier in a transmission link, wherein the remote pump amplifier comprises a main pumping source, at least an auxiliary pumping source, and a wave combiner. The auxiliary pumping source and the main pumping source are coupled in a bypass optical fiber through the wave combiner, which are used as pumping sources of the remote pump amplifier, in the transmission process of the optical fiber, the energy of the auxiliary pumping source is released to the main pumping source, thereby improving the pumping efficiency of the remote pump amplifier by the energy transition of the pumping light. The wave combiner is arranged on an entrance of a light signal channel where the bypass optical fiber is imported, and the wave combiner is used for combining optical waves which are transferred by the auxiliary pumping source and the main pumping source, and the optical waves are input into the light signal channel by the wave combiner. The invention can effectively improve the efficiency of the pump, thereby reaching the purpose of improving the transmission distance of single-section.

One embodiment of the present invention provides an energy-management system for managing energy within a predominantly closed power system. During operation, the system obtains one or more control actions that control energy transitions of a plurality of components, receives transitional characteristics associated with the components, and schedules the energy transitions by generating a set of offsets. A respective offset results in a delay of at least one energy transition.

A medical imaging method comprising generating a radiation at a first energy level by a radiation source, generating a radiation at a second energy level different from the first energy level by the radiation source, emitting the generated radiations at an output of the radiation source towards a detector, and blocking or diverting the emitted radiations during at least one intermediate phase during which the radiation source switches in a transient way from one of the first energy level and the second energy level to the other of the first energy level and the second energy level.

A structure monitoring system includes a magnetic sensor that detects an intensity of a magnetic field from a structure including a metal portion using characteristics of an energy transition of alkali metal atoms, and a control unit that determines a degree of soundness (a degree of fatigue of the metal portion) of the structure using a result of the detection of the magnetic sensor.

The invention provides a road energy collecting device and relates to the technical field of design of energy transition devices. A left internal gear and a right internal gear are respectively arranged on the inner walls of two ends of a split horizontal roller; the left end of a main driving shaft is fixed with a left side vertical plate of a split box body through a left small angle contact ball bearing; an inner ring of the left small angle contact ball bearing is in interference fit with the main driving shaft; the right end of the main driving shaft is coupled with an input shaft of a power generator through a coupling; the main driving shaft on the inner side of the left small angle contact ball bearing is provided with a left spur gear meshed with a small planetary gear I; the small planetary gear I is meshed with a small planetary gear II with a half shaft; a shaft of the small planetary gear II is fixed with the left side vertical plate of the box body through a small deep groove ball bearing II; the small planetary gear II is meshed with the left internal gear; the main driving shaft on the inner side of the left spur gear is provided with a left large small contact ballbearing; an outer ring of the left large small contact ball bearing is fixed with the inner wall of the left side of the horizontal roller; a driving structure on the right side of the horizontal roller is similar to that on the left side of the horizontal roller. The road energy collecting device is used for collecting road energy.

Methods and corresponding apparatus for optical amplification in semiconductors, particularly indirect band-gap semiconductors, and most particularly in silicon. A first aspect of the invention employs certain doping elements to provide inter-band-gap energy levels in combination with optical or current-injection pumping—The doping element, preferably a noble metal and most preferably Gold, is chosen to provide an energy level which enables an energy transition corresponding to a photon of wavelength equal to the signal wavelength to be amplified. The energy transition may be finely “adjusted” by use of standard doping techniques (such as n-type or p-type doping) to alter the conduction and valence band energy levels and thereby also the magnitude of the energy transition. A second aspect of the invention relates to the use of a non-homogeneous heat distribution which has been found to lead to optical amplification effects.

The field of the invention is that of semiconductor devices used for the amplification or for the phase modulation of optical signals. These devices are known by the generic names SOA (semiconductor optical amplifier) and DPSK (differential phase shift keying) modulators. The main drawbacks of this type of device are that it is, on the one hand, difficult to obtain a constant gain, and, on the other hand, it is difficult for the optical signal to be independently amplitude-modulated and phase-modulated. The device according to the invention does not have these drawbacks. It relies essentially on three principles: the active zone of the device has a quantum dot structure, the atoms of said structure possessing a first energy transition state called the ground state and a second energy transition state called the excited state; the active zone is placed in a structured resonant cavity in order to resonate at a first wavelength corresponding to the ground state; and the current flowing through the active zone is greater than the saturation current of the ground state so as to allow oscillation at a second wavelength corresponding to the excited state.