摘要:
A semiconductor laser comprising a laser-active layer sequence (1) having a first main face (1003), on which is arranged a heat conducting layer (3) containing carbon nanotubes (30) and a method for producing such a semiconductor laser.
摘要:
The present invention relates to luminescent SiOz, flakes, especially porous luminescent SiOz flakes, wherein 0.70≦z≦2.0, especially 0.95≦z≦2.0, comprising an organic, or inorganic luminescent compound, or composition, which can provide enhanced (long term) luminescent efficacy.
摘要:
A surface emitting semiconductor component (1) with an emission direction is disclosed, which comprises a semiconductor body (2). The semiconductor body comprises a plurality of active regions (4a, 4b) which are suitable for the generation of radiation and are spaced apart from one another, wherein between two active regions a tunnel junction (5) is monolithically integrated in the semiconductor body. The two active regions are electrically conductively connected by means of the tunnel junction, and the semiconductor component is provided for operation with an external resonator. A laser device comprising a semiconductor component of this type and an external resonator is also disclosed.
摘要:
A surface emitting semiconductor component (1) with an emission direction which comprises a semiconductor body (2). The semiconductor body comprises a plurality of active regions (4a, 4b) which are suitable for the generation of radiation and are arranged in a manner spaced apart from one another, a frequency-selective element (6) being formed in the semiconductor body.
摘要:
The invention relates to a planar structure having an ultraphobic surface and at least one hydrophilic and/or oleophilic area that, in addition to being hydrophilic and/or oleophilic, has at least one additional functionality. The invention also relates to a method for producing the inventive planar structure and to the use thereof.
摘要:
The present invention relates to laser diodes with single mode emission at high output powers, as well as to structures and processes facilitating simple manufacture of such a devices. The invention includes a semiconductor laser (10) with a semiconductor substrate (11), a laser layer (13) arranged on the semiconductor substrate, an array of waveguide ridges (18) arranged at a distance from the laser layer, and several strip-shaped lattice structures (23) arranged on the flat surface between the waveguide ridges. The lattice structure (23) is formed on an insulating or barrier layer (26) at a distance from the laser layer above the laser layer (13). Processes for the production of such a semiconductor laser are also disclosed.
摘要:
A method of improving the operating characteristics of an internal combustion engine equipped with electronic throttle control employs variable cam timing to vary the phasing of the intake valves and/or exhaust valves so as to achieve lower feed gas emissions and improved fuel economy while delivering as closely as possible the desired torque. The method can be implemented using a fuel-lead strategy or an air-lead strategy. Whenever a change is requested in the amount of torque, the method responds by adjusting the amount of fuel flow, the spark timing, the position of the throttle and/or the positions of the intake valves and/or the exhaust valves so as to deliver the desired torque. The method adjusts those operating parameters in a way that improves the ability of the engine to deliver the desired torque, produce less feed gas emissions, idle more stably, and consume less fuel.
摘要:
A wheel bolt for a a vehicle wheel has a shaft with a torque applying head and a threaded section. A rotatable supporting ring is disposed between the head and threaded section, which supporting ring has a spherical construction with a contact area for contacting a vehicle wheel. The supporting ring is non-rotatably held on the shaft in a ring groove by way of at least one caulking.
摘要:
In a motor vehicle body structure including a deformable passenger compartment front wall to which longitudinal forwardly extending frame members are connected and on which a pedal support block is mounted which is tilted backwardly and upwardly when the front wall is deformed by crash impact forces transmitted through the longitudinal frame members to the front wall, pedals pivotally mounted on the pedal support block have projections extending backwardly and having end portions guided by a guide surface so as to pivot the pedal arms forwardly when the pedal support block is tilted backwardly and upwardly by frontal impact forces.
摘要:
Recombinant papilloma virus-like particles result from the expression of viral structural protein L1 and/or L2 in which one or several sections of the L1 and/or L2 protein are deleted. The ability to form virus-like particles is at least the same as, preferably higher than, that of native reproduction and/or in vitro production processes.