Abstract:
The invention relates to compounds formed by inserting, within a starting semiconductor of octahedrally coordinated tetravalent tin chalcogenide type, a transition element, in an octahedral position, for the fabrication of materials or devices for use in photonics. The transition element generates a partially occupied intermediate band separated from the valence and conduction bands of the starting semiconductor, as results from quantum mechanical calculations. This makes it possible, by absorption of two photons having energy that is less than the bandgap of the starting semiconductor, to obtain a result equivalent to that which is achieved by absorbing a photon having energy greater than said bandgap in the absence of an intermediate band. Use of the material of the invention provides a greater yield and higher performance levels in various photovoltaic, photocatalytic, photoelectrochemical, optoelectronic or photon-conversion devices.
Abstract:
Method and system for generating a corrected transport flow (2) from an original transport flow (1), which demultiplexes a signalling data flow comprising signalling information (8) that indicates whether a data flow from an accessibility service (9) is multiplexed in the original transport flow, verifies whether said information is correct, and, if not, generates the corrected transport flow (2) by replacing said signalling information (8).
Abstract:
The present invention relates to a filter pack formed by stacking rings, suitable for use as a final element in multistage or single-stage filters. The filtration process is carried out by consecutively separating the particles in suspension according to the size thereof in various areas.
Abstract:
The invention relates to a computer-assisted method for the cost-optimised calculation of variable distributions on an aerodynamic surface of an aircraft providing the distribution of a variable V within a parametric space predefined by reconstructing the results obtained by means of calculations for an initial group of points in the parametric space using a CFD model, including the following steps: a) selecting relevant shockwave structures and defining said structures according to the width dsw and position ssw thereof and the jump of the variable ?V; b) breaking down said distribution of the variable V into a smooth distribution Vsmooth and a shockwave distribution Vjump; c) obtaining the distribution of the variable V at any point of the parametric space as a reconstruction of the smooth distribution Vsmooth and the shockwave distribution Vjump.
Abstract:
The absorber includes a row of sprinklers (5), situated inside a storage tank (4) adapted to receive a hot and concentrated solution, and to project it inside the tank (4) for its dilution, having a heat exchanger (6) of the solution-air or solution-water type, which is external to the storage tank (4) and cools the diluted solution. Each of the sprinklers from the row of sprinklers (5) comprises nozzles (14) with an oval shape, adapted to spray the solution in the form of a flat sheet (15) with an essentially triangular, fan-type shape, projected in parallel.
Abstract:
Enclosure constituted by transparent or translucent sheets which form a chamber (1) through which a liquid flows in a closed circuit which yields or absorbs energy to and from the exterior and interior, a heat exchanger (2) in contact with the liquid, a circulation pump (3) and a hydrostatic pressure reducing device (4). The hydrostatic pressure reducing device is for reducing the thicknesses of the transparent sheets which contain the liquid. The active character of the enclosure is associated with the capacity thereof for controlling the solar thermal charge and the lighting. The solar thermal charge is regulated by the heat exchanger. The control of the building lighting is performed by means of the adjustable transparency of the liquid. The system can be used for active outdoor enclosures or indoor partitions for climate control and light control.
Abstract:
The invention relates to a device for coupling light to an intermediate band solar cell (8) made from quantum dots, which also concentrates the light. The energy of the light emitting the luminescent material (2) is selected such as to produce transitions between the valence band and the conduction band of the cell. The pigments of the luminescent material (6) are selected such that the emitted photons produce transitions from the valence band to the intermediate band and from the intermediate band to the conduction band. Photonic crystals 1 and 3 prevent the light emitted by the layer (2) from escaping, while photonic crystals 4 and 5 prevent the light emitted by the material (6) from escaping. The device also includes a reflector (7) and a supporting element (9).
Abstract:
The subject matter of the invention is an articulation (1) with controllable stiffness and a force-measuring system, comprising a first device (20) that comprises a frame (4) having a curved face and connected to a first motor element (2), the first device (20) regulating the position of the articulation (1), and a second device (22) that regulates the stiffness of the articulation (1) and comprises a thrust element (15), the movement (D) of which determines the pre-compression of a resistive element (11) and thus the stiffness of the articulation (1); the first motor element (2) causes the frame (4) to rotate such that a wheel (8) of the second device (22) rolls on the curved face of the frame (4), causing the resistive element (11) to be compressed (C) via a transmission rod (7) associated with said wheel (8) and with the resistive element (11).