ECOLE POLYTECHNIQUE Patent applications |
Patent application number | Title | Published |
20150108617 | Method for Chemically Passivating a Surface of a Product Made of a III-V Semiconductor Material and the Product Obtained by Such a Method - A method for chemically passivating a surface of a product made of a III-V semiconductor material in which a) a P(N) polymer film is formed by deposition in a solvent comprising liquid ammonia. The film is formed by deposition, without electrochemical assistance, in the solvent, in the presence of an oxidizing chemical additive comprising phosphorous and generating electrical charge carriers in said surface. | 04-23-2015 |
20150085892 | All Optical High Energy Radiation Source - A method for producing electromagnetic radiation comprising: firing a first laser pulse and generating a plasma region, the first laser pulse penetrating at least partially into the plasma region to create a plasma density wake in the plasma region; providing a group of charged particles in the plasma region arranged so as to be accelerated in the plasma density wake of the first laser pulse; reflecting the first laser pulse after the first laser pulse has penetrated into the plasma region, to give a reflected laser pulse; and arranging the reflected laser pulse to interact with the group of charged particles to generate an electromagnetic radiation. | 03-26-2015 |
20140376085 | PASSIVE DEVICE AND METHOD FOR THE COHERENT COMBINATION OF A PLURALITY OF OPTICAL AMPLIFIERS - A passive device for the coherent combination of at least two optical amplifiers, includes an interferometer having at least four branches having optical elements for separating and combining polarization, the elements having four inlet-outlet ports that are respectively connected to a branch. The first branch includes a first polarization element, a first optical amplifier and a first mirror; the second branch includes a second polarization element, a second optical amplifier and a second mirror; the third branch includes a third polarization element and a third mirror; the fourth branch is an inlet-outlet branch of the interferometer. The three polarization elements are designed such that a polarized optical beam entering respectively into the first, second or third branch and reflected by the mirror at the end thereof forms a polarized optical beam leaving the branch with a polarization that is orthogonal to that of the polarized optical beam entering the branch. | 12-25-2014 |
20140254766 | METHOD AND ARRANGEMENT FOR GENERATING A JET OF FLUID, METHOD AND SYSTEM FOR TRANSFORMING THE JET INTO A PLASMA, AND USES OF SAID SYSTEM - A method and apparatus for generating a pulsed jet of fluid, and transforming the jet into a plasma. The method includes using a high-pressure rapid solenoid valve, and a pipe mounted on an outlet opening of the solenoid valve to produce a pulsed fluid jet which is sub-millimetric in size, and the atomic density of which is more than 10 | 09-11-2014 |
20140153084 | DEVICE AND PASSIVE METHOD FOR THE COHERENT COMBINATION OF TWO AMPLIFIED AND/OR SPECTRALLY BROADENED OPTICAL BEAMS - A method and passive device for the coherent combination of two amplified and/or spectrally broadened optical beams using at least one bidirectional optical component (A1, A2), the device includes an amplitude division ring interferometer having optical splitting and recombining elements disposed so as to receive an incident optical beam (S | 06-05-2014 |
20140121969 | DEVICE FOR DETECTING OBJECTS SUCH AS MINES - A device for detecting objects such as mines placed in a zone to be explored, the device being placed on a vehicle moving at a velocity V and including a panel on which a radiation set is arranged to transmit signals at an illumination frequency and to receive signals reflected from the zone, and a processing circuit to provide information about the presence of the objects after processing of the reflected signals, wherein the radiation set includes an alignment of antennas arranged transverse to the velocity V of displacement of the vehicle. | 05-01-2014 |
20140083351 | PROCESS FOR THE GROWTH OF A CRYSTALLINE SOLID, ASSOCIATED CRYSTALLINE SOLID AND DEVICE - The present invention relates to a process for the growth of a crystalline solid by inching then cooling a crystallization material ( | 03-27-2014 |
20130314528 | SYSTEM AND METHOD OF MULTITECHNIQUE IMAGING FOR THE CHEMICAL BIOLOGICAL OR BIOCHEMICAL ANALYSIS OF A SAMPLE - The invention substantially relates to an imaging system for the chemical, biological or biochemical analysis of a sample ( | 11-28-2013 |
20130300288 | METHOD AND DEVICE FOR FORMING A PLASMA BEAM - The invention relates to a method and device for forming a plasma beam. According to the invention: the quality of the electroneutrality of the plasma beam (PB) is detected (in | 11-14-2013 |
20130278744 | METHOD AND SYSTEM FOR CALIBRATING A SPATIAL OPTICAL MODULATOR IN AN OPTICAL MICROSCOPE - A method and system for calibrating an optical device having a spatial optical modulator ( | 10-24-2013 |
20130223460 | FREQUENCY-DRIFT AMPLIFICATION DEVICE FOR A PULSED LASER - A frequency-drift amplification device for a pulsed laser, including: a stretcher for time-stretching an incident laser pulse; at least one amplifying medium for amplifying the laser pulse; a main compressor for time-compressing the laser pulse to a desired duration for an output pulse of the amplification device; and at least one adjustment compressor between the stretcher and the main compressor, and in which the laser pulse undergoes four diffractions on diffraction gratings to time-compress the stretched laser pulse to a duration that is greater than the desired duration for the output pulse of the amplification device. | 08-29-2013 |
20130208740 | AMPLIFICATION DEVICE WITH FREQUENCY DRIFT FOR A PULSED LASER - An amplification device with frequency drift for a pulsed laser includes a stretcher temporally stretching an incident laser pulse, at least one amplifying medium for amplifying the stretched laser pulse, and a compressor for temporally compressing the stretched and amplified laser pulse. The compressor includes an amplifying medium for amplifying a partially temporally compressed laser pulse, increasing energy yield of the amplifier. | 08-15-2013 |
20130136872 | PLASMA PROCESSING IN A CAPACITIVELY-COUPLED REACTOR WITH TRAPEZOIDAL-WAVEFORM EXCITATION - A method is provided for exciting at least one electrode of a capacitively coupled reactive plasma reactor containing a substrate. The electrode is excited by applying a RF voltage with a trapezoidal waveform comprising a ramp-up, a high plateau, a ramp-down and a low plateau. The plasma density can be controlled by adjusting the duration of the ramp-up, the duration of the ramp-down, the amplitude and the repetition rate of the trapezoidal waveform. The ion energy distribution function at the substrate can be controlled by adjusting the amplitude and the relative duration between the high plateau and the low plateau of the trapezoidal waveform. | 05-30-2013 |
20130078164 | Device for Forming Drops in a Microfluidic Circuit - The invention relates to a device ( | 03-28-2013 |
20130058567 | MULTISCALE MODULUS FILTER BANK AND APPLICATIONS TO PATTERN DETECTION, CLUSTERING, CLASSIFICATION AND REGISTRATION - A digital filter bank having a number J≧1 of stages is disclosed. For each integer j such that 1≦j≦J, the j-th stage includes a plurality of filtering units ( | 03-07-2013 |
20120315194 | Surface Plasma Gas Processing - The invention relates to a gas processing unit adapted for generating a surface plasma in the vicinity of a photocatalyst, that has a planar configuration. The photocatalyst is deposited in the form of a thin layer on a dielectric substrate and at least one plasma supply electrode is formed above the photocatalyst thin layer. Such a configuration increases the interaction between the plasma and the photocatalyst. The unit can be used for a gas processing of the pollution-control, odour reduction or bactericidal treatment type with a high efficiency. | 12-13-2012 |
20120300302 | OPTIMIZED DIELECTRIC REFLECTIVE DIFFRACTION GRATING - A method for producing a reflective diffraction grating. The diffraction grating includes a stack of at least four dielectric material layers, and an upper dielectric material layer that is etched to form grooves of the diffraction grating having a predetermined pitch, The diffraction grating is produced by selecting the number and the nature of the dielectric material layers, digitally computing the reflection and/or transmission efficiencies of at least one of the orders of diffraction of the diffraction grating for a sample of frequencies of the spectral range of use for each of several predetermined diffraction grating configurations while varying the thicknesses of the at least four layers and at least one of the etching parameters of the upper layer, and selecting, from among the computed configurations, at least one configuration depending on the use of the grating. | 11-29-2012 |
20120283572 | DEVICE FOR MEASURING THE ACTIVITY OF THE SPINAL CORD OF A VERTEBRA - A measurement device for measuring activity of the spinal cord of a vertebrate, wherein the device includes at least one main probe ( | 11-08-2012 |
20120247539 | Rear-Contact Heterojunction Photovoltaic Cell - The invention relates to a semiconductor device comprising: a crystalline semiconductor substrate ( | 10-04-2012 |
20120208358 | METHOD FOR PRODUCING A MULTILAYER FILM INCLUDING AT LEAST ONE ULTRATHIN LAYER OF CRYSTALLINE SILICON, AND DEVICES OBTAINED BY MEANS OF SAID METHOD - Method of fabricating a multilayer film having at least one ultrathin layer of crystalline silicon, the film being fabricated from a substrate having a crystalline structure and including a previously-cleaned surface. The method includes the steps of: a) exposing the cleaned surface to a radiofrequency plasma generated in a gaseous mixture of SiF4, hydrogen, and argon, so as to form an ultrathin layer of crystalline silicon having an interface sublayer in contact with the substrate and containing microcavities; b) depositing at least one layer of material on the ultrathin layer of crystalline silicon so as form a multilayer film, the multilayer film including at least one mechanically strong layer; and c) annealing the substrate covered in the multilayer film at a temperature higher than 400° C., thereby enabling the multilayer film to be separated from the substrate. | 08-16-2012 |
20120146194 | METHOD OF TEXTURING THE SURFACE OF A SILICON SUBSTRATE, AND TEXTURED SILICON SUBSTRATE FOR A SOLAR CELL - The invention relates to a method for texturing the surface of a gaseous phase silicon substrate, and to a textured silicon substrate for a solar cell. The method includes at least a step a) of exposing the surface to an SF | 06-14-2012 |
20120145185 | METHOD FOR CLEANING THE SURFACE OF A SILICON SUBSTRATE - A method for cleaning the surface of a silicon substrate, covered by a layer of silicon oxide includes: a) exposing the surface for 60 to 900 seconds to a radiofrequency plasma, generated from a fluorinated gas, to strip the silicon oxide layer and induce the adsorption of fluorinated elements on the substrate surface, the power density generated using the plasma being 10 mW/cm | 06-14-2012 |
20120135857 | NOVEL ORGANOMETALLIC COMPOUNDS CONTAINING A METAL BELONGING TO THE SECOND COLUMN OF THE PERIODIC TABLE, AND METHOD FOR PREPARING SAME - The present invention relates to a novel organometallic compound based on a divalent metal belonging to the 2 | 05-31-2012 |
20120126148 | Device for Generating a Secondary Source by Laser-Material Interaction Comprising an Optical Device for Controlling the Orientation and the Position of a Surface in Movement - A device for generating a secondary source from a primary optical source emitting a first optical beam focused onto a surface in movement, with which said first beam interacts so as to generate a secondary beam, includes an optical device for controlling the orientation and position of said surface to determine the orientation and position of the emission point of said secondary source on said surface. The device comprises: a control laser beam split into two branches, a fixed reference beam and a mobile analysis beam reflected by the surface in movement; means for making said reference and analysis beams interfere to generate interference fringes; means for imaging the interference fringes carrying information about the orientation and position of said surface; means for analyzing said interference images; and means for generating a feedback loop for controlling the orientation and position of said surface in movement based on the analysis. | 05-24-2012 |
20110299152 | DEVICE FOR GENERATING A SHORT DURATION LASER PULSE - An embodiment relates to a device for generating a short duration laser pulse, which comprises: means for generating a laser beam and for filtering same, arranged in such a way as to generate an input laser beam providing an input laser pulse; a transparent slide comprising a non-linear scattering material; the laser generation means being arranged so that the slide widens the spectrum of the input laser pulse by phase self-modulation in order to generate a wide-spectrum laser pulse; compression means adapted for compressing the wide-spectrum laser pulse in order to generate a short duration laser pulse; wherein the laser generation means are arranged so that the input beam is spatially uniform on the transparent slide and has a break integral B lower than three when the input beam passes through the transparent slide. | 12-08-2011 |
20110296562 | METHOD AND DEVICE FOR ACQUIRING SIGNALS IN LASER SCANNING MICROSCOPY - A method for acquiring signals in laser scanning microscopy, includes the steps of: moving a focused optical excitation beam relative to an object to be measured so that the focus point of the beam follows a predetermined path in the space of the object; and acquiring optical measurement signals along the path according to at least one acquisition parameter; characterised in that the path of the excitation beam is determined so as to substantially minimise the variations of the optical properties of at least one portion of the environments crossed by the excitation beam between consecutive acquisitions, and in that at least one acquisition parameter among the acquisition parameters is modulated during the movement of the excitation beam. A device for implementing the method is also described. | 12-01-2011 |
20110254448 | METHOD AND SYSTEM FOR INCREASING THE LIFESPAN OF A PLASMA - A method and a system for increasing the lifespan of a plasma obtained in the atmosphere. The method includes the following steps: emitting a femtosecond laser pulse, referred to as a first pulse, generating a column of plasma by the filamentation phenomenon, and emitting a second YAG laser pulse, focused by way of an axicon on a line in the plasma column, the energy of the photons of the second laser pulse being greater than the attachment energy of the electrons in the plasma to neutral molecules such as oxygen molecules. The duration of the second pulse is greater than the duration of the first pulse, and the delay between the two pulses is greater than one microsecond. | 10-20-2011 |
20110240090 | PHOTOVOLTAIC MODULE INCLUDING A TRANSPARENT CONDUCTIVE ELECTRODE HAVING A VARIABLE THICKNESS, AND METHODS FOR MANUFACTURING SAME - A photovoltaic module includes at least two photovoltaic cells in series, each rectangular cell including, respectively, a first rear thin film electrode, a photovoltaic stack having at least two active materials included between the rear electrode and a transparent conductive electrode made of a thin film, the electrode TC being capable of collecting and transmitting an electric current generated by the photovoltaic stack, the two photovoltaic cells being electrically connected in series by an electrical contact strip that is included between the electrode TC of the first cell and the rear electrode of the second cell. The local thickness of the electrode TC of the cell varies as a function of the distance to the electrical contact strip. Also described are methods for depositing and etching the transparent conductive film so as to simultaneously manufacture a plurality of cells for a single module. | 10-06-2011 |
20110232261 | ELECTRONEGATIVE PLASMA THRUSTER WITH OPTIMIZED INJECTION - A plasma thruster includes extraction of a stream of positive ions. The plasma thruster includes a single ionization stage; means for injecting ionizable gas for said ionization stage, said means comprising at least first means for injecting a first gas and second means for injecting an electronegative second gas; means for creating an RF electric field so as to cause the gases to ionize in the ionization stage, said means creating a first zone called the hot zone, in the ionization stage; the first gas being distributed in the hot first zone, the second gas being distributed in a second zone less hot than said first zone; first means for extracting a stream of negative ions and second means for extracting a stream of positive ions, these being both connected to the ionization stage; and the extraction of a stream of positive ions and the extraction of a stream of negative ions, ensuring that the thruster is electrically neutral. | 09-29-2011 |
20110205539 | DEVICE AND METHOD FOR TAKING SPECTROSCOPIC POLARIMETRIC MEASUREMENTS IN THE VISIBLE AND NEAR-INFRARED RANGES - A spectroscopic polarimetric system of broad spectral range, includes a light source suitable for emitting an incident light beam over a wavelength range, a polarization state generator (PSG), a polarization state analyzer (PSA), and a detector. The PSG and the PSA have respective elements for modulating the polarization of the light beam. The elements of the PSG for modulating polarization are suitable for generating a sequence of m polarization states with m>4 at each measurement wavelength, the elements of the PSA for modulating polarization are suitable for determining a sequence of n polarization states with n>4 for each measurement wavelength, and the detector elements are suitable for acquiring a sequence of N measurements with 1608-25-2011 | |
20110198313 | METHOD FOR THE CONTROLLED GROWTH OF A GRAPHENE FILM - The invention relates to a controlled graphene film growth process characterized in that it comprises the following steps:
| 08-18-2011 |
20110193053 | METHOD FOR MAKING SIDE GROWTH SEMICONDUCTOR NANOWIRES AND TRANSISTORS OBTAINED BY SAID METHOD - A method of fabricating semiconductor nanowires ( | 08-11-2011 |
20110186449 | METHOD AND DEVICE USING NANOPOROUS MEMBRANE FOR DETECTING AND QUANTIFYING HEAVY METAL IONS IN A FLUID BY ANODIC STRIPPING VOLTAMMETRY - Method and a device for capturing heavy metal ions included in sewage sludge. The method includes steps of:
| 08-04-2011 |
20110157551 | DEVICE AND METHOD FOR OPTICALLY MEASURING THE TRANSMISSION AND DIFFUSION OF OCULAR MEDIA - An optical device for measuring the transmission and diffusion of a tissue of the front segment of an eye, includes: a light source; an optical collimation system for directing the collimated light beam towards a tissue of the front segment of an eye to be characterized; an optical mire placed on the optical path between the optical collimation system and the tissue; an optical imaging system capable of receiving a light beam transmitted by the mire and the tissue and capable of forming an image of the mire on an image detector; and an image processing system capable of calculating a modulation transfer function for the tissue from an image of the mire through the ocular medium. The optical mire includes a set of alternately light and dark angular sectors radially distributed from a central point. Different image processing methods for extracting a function representing the transmission and diffusion characteristics of the tissue are described. | 06-30-2011 |
20110147616 | COHERENT NONLINEAR MICROSCOPY SYSTEM AND METHOD WITH VARIATION OF THE FOCAL VOLUME IN ORDER TO PROBE THE NANOSTRUCTURE OF ORGANIZED MATERIALS - A method for the dimensional characterization of a structured material, in which method: an excitation laser beam suitable for coherent nonlinear microscopy is generated, this excitation laser beam being focused in a focal volume within the structured material; signals emitted by the structured material are detected; a plurality of emission patterns, each corresponding to one particular shape of the focal volume, is produced, the particular shapes being obtained for various non-Gaussian spatial profiles of the excitation laser beam wavefront; and on the basis of the emission patterns thus produced, dimensional characteristics of the structured material are deduced therefrom. | 06-23-2011 |
20110042642 | METHOD FOR PRODUCING NANOSTRUCTURES ON METAL OXIDE SUBSTRATE, METHOD FOR DEPOSITING THIN FILM ON SAME, AND THIN FILM DEVICE - A method for producing nanostructures ( | 02-24-2011 |
20100269887 | CRYSTALLOGRAPHICALLY TEXTURED METAL SUBSTRATE, CRYSTALLOGRAPHICALLY TEXTURED DEVICE, CELL AND PHOTOVOLTAIC MODULE INCLUDING SUCH DEVICE AND THIN LAYER DEPOSITION METHOD - A crystallographically textured metallic substrate includes surfaces for connection and for receiving a thin layer deposit, and is made up of an alloy presenting a cubic crystalline system with centered faces and a predominantly cubic crystallographic texture {100}<001>, the receiving surface including grains mainly presenting crystallographic planes {100} parallel to the receiving surface. The alloy is iron-nickel with weight % relative to total weight: Ni≧30%, Cu≦15%, Cr≦15%, Co≦12%, Mn≦5%, S<0.0007%, P<0.003%, B<0.0005%, Pb<0.0001%, and in the alloy: 34%≦(Ni+Cr+Cu/2+Co/2+Mn). The alloy includes up to 1% in weight of one or several deoxidizing elements chosen among silicon, magnesium, aluminium and calcium, the rest of the elements in the alloy being iron and impurities. | 10-28-2010 |
20100244699 | Inductive Plasma Applicator - An inductive plasma applicator comprises a ferromagnetic inductively coupled source and an electrode with a hole pattern centred with respect to the plasma source. Such plasma applicator provides an efficient energy transfer to the plasma. The plasma applicator is preferably manufactured using a technology for producing electrical circuits. The electrode and a coil of the ferromagnetic inductively coupled plasma source are metal track portions formed on an insulating substrate. For example, the plasma applicator is manufactured using printed circuit board technology. | 09-30-2010 |
20100239466 | Surface Plasma Gas Processing - The invention relates to a gas processing unit adapted for generating a surface plasma in the vicinity of a photocatalyst, that has a planar configuration. The photocatalyst is deposited in the form of a thin layer on a dielectric substrate and at least one plasma supply electrode is formed above the photocatalyst thin layer. Such a configuration increases the interaction between the plasma and the photocatalyst. The unit can be used for a gas processing of the pollution-control, odour reduction or bactericidal treatment type with a high efficiency. | 09-23-2010 |
20100105195 | METHOD AND APPARATUS FOR FORMING A FILM BY DEPOSITION FROM A PLASMA - An apparatus is described for depositing a film on a substrate from a plasma. The apparatus comprises an enclosure, a plurality of plasma generator elements disposed within the enclosure, and means, also within the enclosure, for supporting the substrate. Each plasma generator element comprises a microwave antenna having an end from which microwaves are emitted, a magnet disposed in the region of the said antenna end and defining therewith an electron cyclotron resonance region in which a plasma can be generated, and a gas entry element having an outlet for a film precursor gas or a plasma gas. The outlet is arranged to direct gas towards a film deposition area situated beyond the magnet, as considered from the microwave antenna, the outlet being located in, or above, the hot electron confinement envelope. | 04-29-2010 |
20100075458 | FILM DEPOSITION OF AMORPHOUS FILMS WITH A GRADED BANDGAP BY ELECTRON CYCLOTRON RESONANCE - A method is described of forming a film of an amorphous material on a substrate ( | 03-25-2010 |
20100075065 | FILM DEPOSITION OF AMORPHOUS FILMS BY ELECTRON CYCLOTRON RESONANCE - A method is disclosed for forming a film of an amorphous material, for example amorphous silicon, on a substrate ( | 03-25-2010 |
20100074807 | APPARATUS FOR GENERATING A PLASMA - An apparatus for generating a plasma includes a vacuum chamber having a wall and a plasma source including one or more devices for exciting the plasma, and elements for generating a constant magnetic field around the plasma to couple microwave energy into plasma at electron cyclotron resonance, each of the devices for exciting the plasma including a coaxial microwave connector able to be connected to a microwave energy source and a loop antenna able to emit a microwave energy for exciting the plasma. The loop antenna of the one or more devices is positioned inside the vacuum chamber in order to be in contact with the plasma and the elements for generating a constant magnetic field include at least two magnetic dipoles placed on the wall of the vacuum chamber, each of the one or more devices for exciting the plasma having the two magnetic dipoles placed on both sides. | 03-25-2010 |
20100071621 | DEVICE FOR FORMING A FILM BY DEPOSITION FROM A PLASMA - A plasma excitation device is described for use in depositing a film on a substrate from a plasma formed by distributed electron cyclotron resonance. The device comprises a microwave antenna having an end from which microwaves are emitted, a magnet disposed in the region of the said antenna end and defining therewith an electron cyclotron resonance region in which a plasma can be generated, and a gas entry element having an outlet for a film precursor gas or a plasma gas. The outlet is arranged to direct gas towards a film deposition area situated beyond the magnet, as considered from the microwave antenna. | 03-25-2010 |
20100068415 | DEPOSITION OF AMORPHOUS SILICON FILMS BY ELECTRON CYCLOTRON RESONANCE - A method is described for forming a film of amorphous silicon (a-Si:H) on a substrate by deposition from a plasma. The substrate is placed in an enclosure, a film precursor gas is introduced into the enclosure, and unreacted and dissociated gas is extracted from the enclosure so as to provide a low pressure in the enclosure. Microwave energy is introduced into the gas within the enclosure to produce a plasma therein by distributed electron cyclotron resonance (DECR) and cause material to be deposited from the plasma on the substrate. The substrate is held during deposition at a temperature in the range 200-600° C., preferably 225-350° C. and a bias voltage is applied to the substrate at a level to give rise to a sheath potential in the range −30 to −105V, preferably using a source of RF power in the range of 50-250 mW/cm2 of the area of the substrate holder. | 03-18-2010 |
20100068143 | METAL-POLYMER COORDINATION COMPLEX INCORPORATING PHOSPHORUS ATOMS AND APPLICATIONS USING SUCH A COMPLEX - The invention relates to a compound comprising at least one polymeric chain incorporating phosphorus atoms and consisting, in all or in part, of identical or different repeated units, each of said units being represented by the following formula: | 03-18-2010 |
20100047473 | METHOD OF FORMING A FILM BY DEPOSITION FROM A PLASMA - A method is described of depositing film of an amorphous or microcrystalline material, for example silicon, from a plasma on to a substrate. Microwave energy is introduced into a chamber as a sequence of discrete microwave pulses, a film precursors gas is introduced into the chamber as a sequence of discrete gas pulses, and gas for generating atomic hydrogen is supplied to the chamber at least during each microwave pulse. Each microwave pulse is followed in non-overlapping fashion with a precursor gas pulse, and each precursor gas pulse is followed by a period during which there is neither a microwave pulse nor a precursor gas pulse. | 02-25-2010 |
20090321398 | METHOD AND DEVICE FOR MACHINING A TARGET USING A FEMTOSECOND LASER BEAM - The invention relates to a method and device for machining a target using a femtosecond laser beam. The invention consists in taking advantage of the deterministic nature of the ablation threshold and the nonlinear dependence thereof through the use of amplitude or phase pupillary filtering using the polarising effect or any other technique in order to reduce significantly the machining dimensions obtained by focusing a laser beam in nanotechnologies. One such filtering process modifies the distribution of the intensity in the focal plane such as to reduce the maximum of the central component of the spectrum of laser pulses while maintaining the bright rings below the deterministic ablation threshold. The invention associates the femtosecond ablation technique with deterministic threshold and the apodisation technique. | 12-31-2009 |
20090308453 | HETEROJUNCTION WITH INTRINSICALLY AMORPHOUS INTERFACE - The invention relates to a structure ( | 12-17-2009 |
20090301176 | Microelectromechanical System Comprising a Deformable Portion and a Stress Sensor - A microelectromechanical system comprises a deformable portion and at least one stress sensor fixedly attached to the deformable portion. The sensor itself comprises a base portion and a shunt portion juxtaposed on the deformable portion, and connections arranged to detect a change of a distribution of an electric current in the base and shunt portions. Such a system is suitable for many applications, in particular for forming a portion of an arm of an atomic force microscope or for entering into the constitution of a bio sensor. | 12-10-2009 |
20090035908 | PROCESS FOR FABRICATING A NANOWIRE-BASED VERTICAL TRANSISTOR STRUCTURE - The invention relates to a process for fabricating a vertical transistor structure. On a substrate ( | 02-05-2009 |
20080304061 | Polarimetric Raman System and Method For Analysing a Sample - A Raman method and system for analysing a sample including an excitation source emitting an incident light beam, a sample holder for mounting the sample, elements for focusing the incident light beam onto the sample surface to generate a Raman scattered light having an intensity, elements for collecting the Raman scattered light to form a Raman scattered light beam, a detection system measuring intensity of the Raman scattered light beam as a function of time. The system includes at least a polarization state generator able to generate four independent polarization states or a polarization state analyzer able to analyze four independent polarization states to detect the intensity of the Raman scattered light beam and calculate a partial or complete Mueller-Stokes matrix of the sample. | 12-11-2008 |
20080271430 | Electronegative Plasma Motor - The subject of the invention is a plasma motor for the extraction of a positive ion flow. The plasma motor has a single ionization stage ( | 11-06-2008 |
20080210987 | Array of Fet Transistors Having a Nanotube or Nanowire Semiconductor Element and Corresponding Electronic Device, For the Detection of Analytes - In an array R of field-effect transistors for detecting analytes, each transistor of the array comprises a gate G, a semiconductor nanotube or nanowire element NT connected at one end to a source electrode S and at another end to a drain electrode D, in order to form, at each end, a junction J | 09-04-2008 |
20080210864 | Local Injector of Spin-Polarized Electrons with Semiconductor Tip Under Light - The invention is directed to a spin-polarized electron injector using a semiconductor tip, in which tip the injected electrons are photocreated by a circularly polarized light excitation incident on the rear of the tip. This tip is supported by a transparent lever or cantilever and undergoes a surface treatment for the purpose of removing the surface oxide layer, to prevent said layer from reforming and to improve the proportion of injected electrons. | 09-04-2008 |
20080200817 | Electronic Polarimetric Imaging System for a Colposcopy Device and an Adapter Housing - The invention relates to an electronic polarimetric imaging system use in a colposcopy device for in vivo monitoring a cervix, which is provided with a light source for illuminating the observable cervix and at least visual means for monitoring said cervix, wherein the illumination optical path directed to the cervix and the image optical path coming back from the cervix are separated from each other on at least a portion of the paths thereof. The inventive system comprises a polarimetric adapter housing which is removable in the separated portion of the illumination and image optical paths and comprises a polarization state generator (PSG) positioned on the illumination optical path and a polarization analyser (PSA) positioned on the image optical path, wherein said polarization state generator (PSG) and polarization analyser (PSA) are designed in such a way that they are controllable. Said invention makes it possible to obtain several polarimetric characterisation levels. The adapter housing is also disclosed. | 08-21-2008 |