Abstract: A method for preparing a multilayer substrate includes the step of deposing an epitaxial ?-Al2O3 Miller index (001) layer on a Si Miller index (001) substrate.

Abstract: A method for preparing a multilayer substrate includes the step of deposing an epitaxial ?-Al2O3 Miller index (001) layer on a Si Miller index (001) substrate.

Abstract: An interconnected array of reconfigurable logic cells which carry out at least one logic function, externally connected to peripheral connection network equipped with switch boxes and connected to programmable input/output blocks. The logic cells are distributed in a first dimension in rows i with i=1 to d and a second dimension in columns j with j=1 to w, with d?2 and w=2 or d=2 and w?2, each logic cell including a second input, a second input, a first output and a second output, the first input of each logic cell and the first output of each logic cell being connected to the connection network, the second input and the second output of each logic cell being connected to other different column and row logic cells except for the first and last rows or columns for d>2 or w>2 respectively.

Abstract: The invention concerns a gallery mode microdisc system for an electrically pumped optical source, the microdisc (1) being formed on one face of a substrate (2), the lower part of the microdisc being provided with an electrical contact referred to as the lower contact (4), the upper part of the microdisc being provided with an electrical contact referred to as the upper contact (6), the upper part of the microdisc being covered with a protective layer (3) of electrically insulating material, the central part (5) of the microdisc being electrically neutralized in order to prevent the passage of an electric current in said central part.

Abstract: A device for collecting light emitted by a laser source, including an optical wave guide arranged so as to collect a light signal emitted by the laser source, by coupling. The wave guide includes a loop coupled to a laser source in two coupling zones making it possible to recover optical modes circulating along the direction opposite to the required direction for the signal output from the device.

Abstract: Reconfigurable logic cells based on dual gate MOSFET transistors (DG MOSFETs) including n inputs (A,B), n being greater than or equal to 2 and capable of performing at least four logic functions with which logical signals provided on the n inputs (A,B) may be processed. The cell contains, between the ground and the output (F) of the cell, at least one first branch including n dual gate N-type MOSFET transistors (M1,M2) in series and n?1 branches in parallel with the first branch, each provided with a dual gate N-type MOSFET transistor (M3), each of the logic functions corresponding to a given configuration of the cell. A specific set of control signals (C1,C2) is applied on the rear gates of at least one portion of the transistors (M2,M3), each control signal (C1,C2) being capable of setting the transistor (M2,M3) to a particular operating mode.

Abstract: This pad microprinting device comprises: a multi-level pad (34) wherein the printing pattern is made out of elastomeric material for which the Young's modulus is between 0.1 and 100 MPa, and a stop mechanism (62-64) capable of keeping an incompressible space of a thickness Dn between the nth flat bottom (122B) and the face of the substrate (32) on which an imprint has to be printed, when the pad is compressed against the face of the substrate to print off the imprint, the thickness Dn being between hn/2 and hn+100 nm where hn is the height of the protrusions of the printing pattern.

Abstract: Reconfigurable logic cells based on dual gate MOSFET transistors (DG MOSFETs) including n inputs (A,B), n being greater than or equal to 2 and capable of performing at least four logic functions with which logical signals provided on the n inputs (A,B) may be processed. The cell contains, between the ground and the output (F) of the cell, at least one first branch including n dual gate N-type MOSFET transistors (M1,M2) in series and n?1 branches in parallel with the first branch, each provided with a dual gate N-type MOSFET transistor (M3), each of the logic functions corresponding to a given configuration of the cell. A specific set of control signals (C1,C2) is applied on the rear gates of at least one portion of the transistors (M2,M3), each control signal (C1,C2) being capable of setting the transistor (M2,M3) to a particular operating mode.

Abstract: The present invention relates to a tribometer (1) comprising: a first support assembly (2) configured to receive a central test piece (3), which test piece is circularly cylindrical, and to drive it in rotation about its axis (X); and a second support assembly (4) configured to receive a plurality of peripheral test pieces, preferably three of them, and to enable said central test piece (3) to make contact simultaneously with said three peripheral test pieces (9) in an isostatic configuration in such a manner that the central test piece, while being driven in rotation, can rub against the peripheral test pieces.

Abstract: The present invention relates to a biosensor comprising a substrate with a coating system in which a Ruthenium complex and an enzyme is integrated. The enzyme is able to convert bioproducts, e.g. glucose, fructose or glycerol. The depletion of oxygen during these converting reactions can be monitored via the fluorescence of the Ruthenium complex. The inventive biosensor can be used in biotechnological processes, e.g. the synthesis of biofuels.

Abstract: The invention relates to a biochip comprising a substrate presenting a reflecting main surface and wherein the main surface presents localized sites that are made sensitive to fluorescence detection by a transparent layer having optical thickness (2k+1)?/4 where k is a positive or zero integer and where ? designates a wavelength lying between a wavelength ?0 at which fluorescence is excited and a wavelength ?1 at which fluorescence is emitted. The biochip can be manufactured by depositing a transparent layer of thickness m??/2 on a substrate and by making studs or wells of thickness (2k+1)?/4 in said layer to form said sensitive sites.

Abstract: The invention concerns a gallery mode microdisc system for an electrically pumped optical source, the microdisc (1) being formed on one face of a substrate (2), the lower part of the microdisc being provided with an electrical contact referred to as the lower contact (4), the upper part of the microdisc being provided with an electrical contact referred to as the upper contact (6), the upper part of the microdisc being covered with a protective layer (3) of electrically insulating material, the central part (5) of the microdisc being electrically neutralised in order to prevent the passage of an electric current in said central part.

Abstract: The present invention relates to a biosensor comprising a substrate with a coating system in which a Ruthenium complex and an enzyme is integrated. The enzyme is able to convert bioproducts, e.g. glucose, fructose or glycerol. The depletion of oxygen during these converting reactions can be monitored via the fluorescence of the Ruthenium complex. The inventive biosensor can be used in biotechnological processes, e.g. the synthesis of biofuels.

Abstract: The invention concerns an optoelectronic device comprising at alteration of at least three semiconductor layers with selected shape, and two air layers. The semiconductor layers having N-type or P-type doping which may differ or not from one layer to the next layer, are separated by spacers whereof the doping is non-intentional (I-type) or intentional (N-type or P-type) to define a PINIP or NIPIN structure with air cavities, and are adapted to be set at selected respective electric potentials. The respective thicknesses and compositions of the layers and the spacers are selected so that the structure has at least an optical transfer function adapted to light to be treated and adjustable in accordance with the selected potentials applied to the semiconductor layers.

Abstract: The invention relates to an optoelectronic device including filter means (3) for transmitting a selected spectral portion of light waves and for reflecting a complementary spectral portion thereof, placed between means (4) for reflecting the chosen spectral portion towards the filter means and converter means (1) for transmitting the light waves to be filtered to the filter means. The converter means are at a first distance (d1) from the filter means chosen so that the waves that they transmit to them and the reflected complementary spectral portion create a first standing wave whose associated electric field has a node in the converter means (1) and at a second distance (d2) from the chosen reflector means so that the chosen spectral portion and the chosen and reflected spectral portion create a second standing wave whose associated electric field has an antinode in the converter means.

Abstract: The present invention relates to a procedure for the qualitative and/or quantitative analysis of biological substances, which are preferably biological substances, that are present in a conductive liquid medium, with the aid of at least one affinity sensor that includes at least one structure that includes at least one semiconductor material, which is coated on one of its surface with at least one layer of an isolating material, which in turn is affixed adhesively to at least one sensitive membrane, which is in contact with the conductive medium and which includes ligands that are complementary to the biological substances in question and which are capable of, and suitable for, forming pairs specifically with the latter biological substances, with the said procedure being characterized by the fact that it consists essentially of applying a voltage between the semiconductor and the conductive medium; of gathering the variations in the electrical signals induced by a charge-effect phenomenon directly and essent

Abstract: The invention is an optoelectronic device comprising first means defining a first thick resonant cavity having a multiple transmission resonant modes, second means defining a second thin resonant cavity having one transmission resonant mode, means for optically coupling the first and second means, and electrostatic means designed to apply to the second means an electric voltage selected to vary the thickness of the second cavity and the special position of its resonant mode, such that it coincides with one of the resonant modes of the first cavity.

Abstract: The present invention relates to a procedure for the qualitative and/or quantitative analysis of biological substances, which are preferably biological substances, that are present in a conductive liquid medium, with the aid of at least one affinity sensor that includes at least one structure that includes at least one semiconductor material, which is coated on one of its surface with at least one layer of an isolating material, which in turn is affixed adhesively to at least one sensitive membrane, which is in contact with the conductive medium and which includes ligands that are complementary to the biological substances in question and which are capable of, and suitable for, forming pairs specifically with the latter biological substances, with the said procedure being characterized by the fact that it consists essentially of applying a voltage between the semiconductor and the conductive medium; of gathering the variations in the electrical signals induced by a charge-effect phenomenon directly and essent

Abstract: The invention concerns an optoelectronic device comprising at alteration of at least three semiconductor layers with selected shape, and two air layers. The semiconductor layers having N-type or P-type doping which may differ or not from one layer to the next layer, are separated by spacers whereof the doping is non-intentional (I-type) or intentional (N-type or P-type) to define a PINIP or NIPIN structure with air cavities, and are adapted to be set at selected respective electric potentials. The respective thicknesses and compositions of the layers and the spacers are selected so that the structure has at least an optical transfer function adapted to light to be treated and adjustable in accordance with the selected potentials applied to the semiconductor layers.

Abstract: The present invention relates to a procedure for the qualitative and/or quantitative analysis of biological substances, which are preferably biological substances, that are present in a conductive liquid medium, with the aid of at least one affinity sensor that includes at least one structure that includes at least one semiconductor material, which is coated on one of its surface with at least one layer of an isolating material, which in turn is affixed adhesively to at least one sensitive membrane, which is in contact with the conductive medium and which includes ligands that are complementary to the biological substances in question and which are capable of, and suitable for, forming pairs specifically with the latter biological substances, with the said procedure being characterized by the fact that it consists essentially of applying a voltage between the semiconductor and the conductive medium; of gathering the variations in the electrical signals induced by a charge-effect phenomenon directly and essent