Abstract: The present disclosure relates to a multi-layer stack which is useful for forming a multi-junction organic photovoltaic cell, said stack including first and second active layers, and an intermediate p-type or n-type layer, inserted between said first and second active layers and in contact with at least one of the first and second active layers, said intermediate layer including a network of electrically conductive nanowires, said stack including an additional layer, inserted between the first active layer and the second active layer and directly in contact with the first active layer or the second active layer, the additional layer being P-type or N-type, separate from the one forming the intermediate layer.

Abstract: An electrolyte plate for an electrochemical system including a first and a second face opposite to each other of larger surface areas, both faces being separated by a given distance. The first face includes linear protrusions and the second face includes linear recesses, the protrusions and the recesses being substantially parallel to each other. Each protrusion is superposed to a recess along a direction substantially orthogonal to a mean plane of the plate, the distance separating a bottom of each recess from a vertex of the superposed protrusion being substantially equal to the distance between the first and the second face so that the electrolyte plate has a substantially constant thickness.

Abstract: This differential dipole antenna system (82) comprises, on a same surface of a dielectric substrate, a first half (18) of a thick radiating dipole, a first conducting strip (20) of a bi-strip line for supplying a differential signal, said first conducting strip (20) being connected to the first half (18) of the thick radiating dipole, a second half (28) of a thick radiating dipole and a second conducting strip (30) of the bi-strip supply line, said second conducting strip (30) being connected to the second half (28) of the thick radiating dipole. The system further includes, on said same surface, an additional conducting strip (36) defining a short circuit connecting the first half (18) and the second half (28) of the thick dipole, and a differential resonating filtering device (50) having a bandwidth adapted so as to be combined with the resonance generated by the short circuit (36) so as to generate an antenna impedance matching.

Abstract: The invention relates to an optical filter structure composed of at least two adjacent elementary optical filters, an elementary optical filter being centred on an optimum transmission frequency, characterised in that it comprises a stack of n metallic layers (m1-m3) and n?1 dielectric layers (d2-d3), each metallic layer alternating with a dielectric layer such that the central layer in the stack is a metallic layer (m2), each of the layers in the stack having a constant thickness except for the central metallic layer for which the varying thickness fixes the optimum transmission frequency of an elementary filter.

Abstract: A system for controlling a machine by cortical signals, including: a mechanism acquiring electrophysiological signals originating from a plurality of locations in the cerebral cortex of a human or animal subject; a producing device adapted to input the electrophysical signals and output control signals from the machine in response to predetermined variations in the characteristics of the electrophysiological signals. At least some of the electrophysiological signals are from predetermined cortex regions and not associated with any performed or imagined activity nor with any sensory stimuli visualized by the human or animal subject. A method for controlling a machine by cortical signals can use such a system.

Abstract: A semiconductor substrate including at least a layer based on doped diamond with a thickness greater than or equal to approximately 10 ?m, a layer based on at least one semiconductor or a stack of layers including the semiconductor-based layer, and a layer based on intrinsic diamond disposed against the layer based on doped diamond, between the layer based on doped diamond and the semiconductor-based layer.