Abstract:
The invention provides a device for dispensing accurately-controlled small quantities of at least one liquid, comprising a liquid supply (L); a gas supply (G), arranged to selectively supply a gas pressure; and a capillary duct (20) adapted to be filled with liquid to be dispensed, and to eject the liquid. The device has a filling configuration wherein liquid from the supply is in contact with an end (20a) of the capillary duct to fill the capillary duct with liquid; and a liquid separation and ejection configuration, in which liquid remaining in the liquid supply is separated from liquid that fills the capillary duct to form a discrete quantity (V) of liquid filling the capillary duct (20) out of contact with the remaining liquid of the liquid supply. The capillary duct, filled with this discrete quantity (V) of liquid then has one end in contact with the gas supply and another end in contact with the atmosphere. The discrete quantity of liquid (V), forming an exact dose of liquid to be dispensed, is ejectable from the second end (20b) of the capillary duct by the application of gas pressure.
Abstract:
A method of separating isotopes from polyatomic molecules, in particular C from trifluoromethane HCF3, by applying to the polyatomic molecules in the gas phase two infrared laser beams of different frequencies. The first laser has a frequency appropriate to excite a low overtone transition of a light atom stretch vibration and produce vibrationally pre-excited molecules enriched in the desired isotope, for instance C. The second laser has a frequency and energy fluence to selectively induce dissociation of the vibrationally pre-excited molecules by infrared multiphoton excitation. The product of the pressure of the molecules and the time-delay of the second laser pulse relative to the first allows collisional vibrational deactivation of a substantial amount of the vibrationally pre-excited molecules containing non-desired isotope(s), like C, before dissociation of the vibrationally excited molecules occurs, while there is no significant collisional vibrational deactivation of pre-excited molecules containing the desired isotope, like C. The dissociation products are hence highly enriched in the desired isotope.
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).
Abstract:
The present invention concerns a microfluidic device for mechanically induced trapping of molecular interactions comprising at least a first unit cell and a second unit cell, each unit cell comprising - a membrane chamber comprising a membrane, - a flow channel crossing the membrane chamber and having an inlet and an outlet, and the flow channel crossing the first unit cell being different from the flow channel crossing the second unit cell. Another object of the invention is a method for isolation of specifically bound nucleic acids to target molecules on said microfluidic device followed by its recovery and identification.
Abstract:
Method for displaying an image being projected from a portable head-worn display comprising steps of emitting a plurality of light beams of different wavelengths (206, 301), directing the plurality of light beams to a scanning mirror (205), modulating in intensity each one of the plurality of light beams in accordance with intensity information provided from the displayed image whereby the intensity is representative of a pixel value within the image, scanning the plurality of light beams in two distinct axes with the scanning mirror (205) to form the image and redirecting the plurality of light beams to the eye using a holographic reflector (204) whereby the redirecting is dependent on the wavelength of the light beam, to create for each light beam an exit-pupil (212, 304) at the eye (210) that is spatially separated from the exit-pupils of the other light beams.
Abstract:
The invention relates to a solid optical amplifier that is capable of being pumped in order to allow optical amplification of an incident light pulse to be amplified, comprising at least one amplifying zone provided to be passed through by said incident light pulse to be amplified, and at least one side wall, outside of said amplifying zone. According to the invention, said side wall has a shape such that a parasitic light pulse circulating in said amplifier in a random direction and entering into contact with said side wall experiences on average more than one reflection from said side wall before being reflected toward said amplifying zone.
Abstract:
The invention concerns metallopolymers of formula (I) in which R1 and R1 are, independently of each other, a C2-C10 alkyl group; R2 and R2' are, independently of each other, a C2-C10 alkyl group; X is CR3R3' or NR4; R3 and R3' are, independently of each other, a C2-C10 alkyl group; R4 is a C2-C10 alkyl group; L is a C4-C10 alkylene group; Ln1 and Ln2 are, independently of each other, chosen from the lanthanide cations; L1 and L2 are, independently of each other, chosen from the α-diketonate ligands; T is a neutral bidentate Lewis base comprising two coordinating nitrogen atoms; → represents a coordination of group T via the two nitrogen atoms of T to Ln1 and Ln2 respectively; Ln1 and Ln2 are, independently of each other, chosen from the lanthanide cations; L1 and L2 are, independently of each other, chosen from the &bgr;-diketonate, picolinate or dipicolinate monoanionic ligands; x is between 0.01 and 0.50; y is between 0 and 0.49, the sum of x+y being equal to 0.50, and the use thereof in polymer light-emitting diodes.
Abstract:
The invention relates to an electric impedance synthesis method to be used in an electroacoustic device having broadband noise-reduction capacitors, which includes a step of defining the acoustic specifications on the basis of a complex specific acoustic impedance, which varies with the frequencies, and responds to requirements in terms of noise reduction; an analysis step which consists of determining the electrical, mechanical and acoustic parameters of one or more electroacoustic transducers in the noise environment thereof; and a synthesis step which identifies and implements the electric load impedance or impedances to be applied to the terminals of the electroacoustic transducer or transducers in order to provide the desired acoustic performance.
Abstract:
A bipolar resistive switching device comprises a bottom electrode, a stack of at least two transition metal oxides layers, the stack including at least one oxygen gettering layer, and a top electrode. A particular configuration is Pt/TaOx/CrOy/Cr/Cu. Methods for manufacturing and use of the bipolar resistive switching device are disclosed as well.
Abstract:
Stretchable electronic structure comprising one intrinsically fragile thin film integrated on or within a soft heterogeneous substrate. The invention also relates to a process for manufacturing such a structure.