Abstract:
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:
wherein X 3 represents -[Si(O 2 )]-; or -O-[Si(R 1 R 2 )O]- with R 1 and R 2 being, independently of each other, a C 1 -C 30 alkyl or alkoxy group, a C 5 -C 30 aryl group; or a mono- or polyorganosilicate derived radical; or -N(R 3 )- with R 3 being -H, a C 1 -C 30 alkyl group or a C 5 -C 30 aryl group, optionally substituted with -OH or -NH 2 , or at least one unit of general formula (I), and =X 4 represents an electron pair, =O, =S, =NR 4 with R 4 representing a C 1 -C 30 alkyl group or a C 5 -C 30 aryl group, =Se or =Te, and its use for complexing metal atoms.
Abstract:
L'invention a pour objet un filtre optique non linéaire apte à transmettre une impulsion électromagnétique d'une durée inférieure à environ 1 picoseconde, pourvu de moyens pour générer à partir de cette impulsion, un champ électromagnétique E à polarisation rectiligne, et d'un cristal C1 à géométrie cubique apte à générer à partir de E, un champ électromagnétique E' 1 à polarisation rectiligne, orthogonale à celle de E. Il comprend des moyens pour générer au moins un autre champ électromagnétique E' 2 capable de produire des interférences constructives avec le champ électromagnétique E' 1 .
Abstract:
The invention relates to a method for synthesis of electronic components, incorporating filament structures on a nanometre scale, whereby a metallic catalyst (7) is deposited in a nanoporous membrane (3) which can penetrate at least a part of the pores (8) of the nanoporous membrane (3) and filament structures are grown in the catalyst in at least a part of the pores (8) of the nanoporous membrane (3). The nanoporous membrane (3) is produced such that the wall of the pores (8) comprise a monocrystalline zone and the catalyst (7) is at least partially grown on said monocrystalline zone.
Abstract:
The invention relates to a method for producing electronic components consisting in carrying out a first anodisation of a carrier material (1) for forming at least one first pore (3) extending in a first direction in said carrier material (1) and in carrying out a second anodisation for forming at least one second pore (17) extending in the carrier material (1) in a second direction different from the first direction.
Abstract:
The invention relates to a device for managing light pulses in order to measure the reaction of a sample exposed to a first light pulse, the measurement being performed by analysing a signal emitted by the sample subjected to a second light pulse that is offset relative to the first pulse by a predetermined time interval, including two optical detectors (21, 23) for detecting the pulses of two light beams emitted by two pulsed laser sources (1, 3), respectively, each beam emitting pulses with different respective repetition frequencies, which are arbitrary and stable over a predetermined period, toward said sample, the detectors being connected to a computer (25) in order to determine the time interval between two pulses coming from the first and second beam, respectively, and constituting the first and second pulses, said computer being connected to an analyser (15) for measuring the reaction of the sample, which has the time interval between the two pulses as an input parameter. Moreover, the computer (25) uses an algorithm which processes the stability of the repetition frequencies in order to determine the time interval.
Abstract:
The invention relates to a method for analysing an interaction between a first molecule and a second molecule bonded to a particle, including the following steps: contacting the first molecule with the second molecule bonded to the particle under conditions enabling the interaction thereof; applying a predetermined liquid flow to the particle bonded to the second molecule; observing a movement of the particle bonded to the second molecule caused by the applied flow; analysing the interaction according to the movement observed and the applied flow, the particle having a greater hydrodynamic resistance than the first and/or second molecule, and a mass Péclet number of greater than 1. The invention also relates to a device for analysing an interaction between a first molecule and at least one second molecule, as well as to the use of the method or of the device in screening a candidate molecule for developing a drug.