Abstract:
The invention relates to a method for treating drops in a microfluid circuit, comprising at least one microchannel (12) through which the drops flow, characterised in that a laser (26) is brought to bear on the interface of said drops in the transport liquid (F3), or on the interface of drops in contact, in order to carry out a sorting of the drops, to form nanodrops from a larger drop or to fuse drops (60, 64) in contact and initiate reactions between the fluids contained in said drops.
Abstract:
The invention relates to a method for creating a terahertz source (4). For said purpose, a filament (5) is generated from a femtosecond laser beam (2). The filament (5) is a plasma column situated on the propagation axis of the laser beam. The source (4) of terahertz radiation consists of all the punctual sections of the filament (5). Said source emits a terahertz radiation (6) according to an emission cone directed according to the propagation axis of the impulses of the laser (2). The terahertz source (4) can be placed in proximity of a target to be irradiated. Dislocation is performed by dislocating the laser beam (2) at the origin of the filament (5).
Abstract:
Microfluidic system comprising a space (0207) for containing a liquid and at least one lateral chamber (0201) in communication with said space, said lateral chamber containing a metal electrode (0204). The lateral chamber and the space are designed to be filled by the same or different liquid when the system is active.
Abstract:
The invention relates to an optical pulse amplifier (51) comprising - a first optical fiber amplifier (52a) adapted to receive an input pulse, - a splitter (54a, 54b, 54c) connected to said first optical fiber, said splitter having a plurality of outputs; - a plurality of optical fiber amplifiers (52b, 52c, 52d, 57) , each optical fiber amplifier being connected to one of said plurality of outputs, said plurality of optical fiber amplifiers generating a plurality of output pulse signals. The optical pulse amplifier of the invention has the advantage that it can produce high peak and high average power.
Abstract:
A dye sensitized solar cell, comprising a-heteroleptic polypyridil complex of Ru, Os or Fe. The donating ligand has an extended conjugated n-system increasing the light absorbance and keeing the LUMO energy level higher than that of the anchoring ligand. A compacting compound whose molecular structure comprises a terminal group, a hydrophobic part and an anchoring' group may be co-adsorbed together with the dye on the semi-conductive metal oxide layer of the photoanode, forming a dense mixed self-assembled monolayer.
Abstract:
A device for generating a high-energy particle pulse is provided which comprises a laser system producing laser pulses with pulse length shorter than 100 fs (femtoseconds), and capable to be focused to peak intensities greater than 10A18 W/cmA2, preferred greater than 10A20 W/cmA2 (watts per centimeter squared), a device for shaping the temporal intensity profile accompanying said at least one laser pulse for increasing the laser contrast above 10^5, preferably above IL 0A7, especially 1OA10, and a target capable of releasing a high-energy particle pulse, particularly an electron or a proton pulse, upon irradiation with at least one of said laser pulses. A. corresponding method using the device is also described.
Abstract translation:提供了一种用于产生高能量粒子脉冲的装置,其包括产生具有短于100fs(飞秒)的脉冲长度的激光脉冲的激光系统,并且能够聚焦成大于10A18W / cmA2的峰值强度,优选大于10A20 W / cm 2(瓦每平方厘米),用于使伴随所述至少一个激光脉冲的时间强度分布成形的装置,用于将激光对比度增加到10 ^ 5以上,优选高于IL 0A 7,特别是10A 10,以及能够释放 高能粒子脉冲,特别是电子或质子脉冲,在用至少一个所述激光脉冲照射时。 还描述了使用该装置的相应方法。
Abstract:
The invention relates to an electronic control cell for at least one organic electroluminescent diode (OLED) of a pixel or segment of an active matrix display, wherein the cell comprises at least one control circuit (6,61,62) with a control input and functioning according to a control signal arriving on a control line (5,5') and enabling the OLED(s) to be switched on or not, a capacitative storage memory for the control signal whereby the capacitor thereof is linked to the control line, a selection circuit (4,41,42) functioning according to a selection signal V
Abstract:
The present invention relates to a method of producing a high density pattern of isolated clusters on a surface of a substrate, comprising treating the surface of the substrate to produce element-adhesion sites distributed on the surface of the substrate in accordance with the pattern, depositing a first transition series element on the surface of the substrate, and forming, by diffusion and/or coalescence, clusters of the deposited element on the elementadhesion sites. The size of the clusters can be manipulated by irradiating the clusters with a low energy ion beam to cause coalescence of the clusters and diffusion of these clusters on the surface of the substrate whereby the size of the clusters is changed. The surface of the substrate can also be irradiated at a grazing angle with a low energy ion beam to modify the surface of the substrate and thereby enhance adhesion of the clusters of the deposited element to the modified surface. Finally, contact mode atomic force microscopy can be used for surface local cleaning and cluster assembling by applying an atomic force microscopy tip to the surface of the substrate and scanning with this tip a region of the substrate surface.
Abstract:
Method for determining the relative position of wireless terminals (1) in an ad hoc network, wherein at least some of said wireless terminals can communicate over wireless links (2) in one or several hops with at least some of the other wireless terminals. The following steps are performed in the wireless terminals: measuring in a plurality of said wireless terminals the distances (dij) to one-hop neighbors, using the distances measured in at least two wireless terminals to compute the location (x, y) of at least one other wireless terminals. Advantage: GPS-less positioning in ad hoc networks.
Abstract:
A controllable camera support comprising a pivoting arm (50) adapted to be rotatably connected to a pivot point (52) defining a first rotational axis (54). The pivoting arm (50) also defines a radial axis (56). The camera support also includes a camera holder (44) mounted on the pivoting arm (50). The camera holder (44) is displaceable along the radial axis (56). The camera further includes motors (62, 68) coupled to the pivoting arm (50) and to the camera holder (44). The motors (62, 68) are adapted to impart rotational and radial motions to the camera holder (44). The camera support also comprises a control device (100) for controlling the motors (62, 68). The invention also covers a system further including a focal adjustable, rotational, tilting camera mounted on the camera holder (44).