摘要:
Nanostructures with 0, 1, 2 and 3 dimensions, with negative differential resistance and method for making these nanostructures. A nanostructure according to the invention may notably be used in nanoelectronics. It comprises at least one structure (32) or at least one plurality of said at least one structure, at the surface of a silicon carbide substrate (30), the structure being selected from quantum dots, atomic segments, atomic lines and clusters, and at least one metal deposit (34), this metal deposit covering at least the structure or at least the plurality of said at least one structure, or of the combination of two or more of these nanostructures with 0, 1, 2 or 3 dimensions.
摘要:
Triphenylamine derivatives useful as fluorophores in biology, in particular for two-photon microscopy; andcompositions comprising these derivatives, to the use of these compositions and of the derivatives themselves for labelling biological molecules (or “biomolecules”) such as nucleic acids, oligonucleotides, proteins, polypeptides, plasmids, and the like, for their examination in particular by two-photon microscopy, and to biomolecules labelled with the said derivatives.
摘要:
The invention concerns a method for treating a fluid. According to the invention, the fluid is contacted with a substrate at the surface of which there is a network of organic molecules, hereafter referred to as “network molecules”. There is a central core and at least one lateral arm, the molecules being adsorbed at the surface of the substrate. The invention also concerns a two-dimensional molecular sieve formed by the substrate at the surface of which a network of network molecules is adsorbed. The invention further concerns a module for treating a fluid including a circulating device for the fluid to be treated, the device containing one or more two-dimensional molecule sieves.
摘要:
The present invention relates to an indirect-gap semiconductor substrate, the gap being greater than that of silicon and preferably greater than 1.5 eV, to its use for imaging a specimen by photon-emission scanning tunnel microscopy, and to a photon-emission scanning tunnel imaging method using such an indirect-gap semiconductor substrate. Advantageously, the indirect-gap semiconductor substrate is made of silicon carbide. The present invention also relates to devices for implementing the imaging method according to the invention.
摘要:
The invention concerns a method for treating a fluid. According to the invention, the fluid is contacted with a substrate at the surface of which there is a network of organic molecules, hereafter referred to as “network molecules”, having a central corre and at least one lateral arm, said molecules being adsorbed at the surface of the substrate. The invention also concerns a two-dimensional molecular sieve consisting of substrate at the surface of which a network of network molecules is adsorbed. The invention further concerns a module for treating a fluid comprising means for circulating the fluid to be treated and containing one or more two-dimensional molecule sieves.
摘要:
The present invention relates to an indirect-gap semiconductor substrate, the gap being greater than that of silicon and preferably greater than 1.5 eV, to its use for imaging a specimen by photon-emission scanning tunnel microscopy, and to a photon-emission scanning tunnel imaging method using such an indirect-gap semiconductor substrate. Advantageously, the indirect-gap semiconductor substrate is made of silicon carbide. The present invention also relates to devices for implementing the imaging method according to the invention.
摘要:
Triphenylamine derivatives useful as fluorophores in biology, in particular for two-photon microscopy; andcompositions comprising these derivatives, to the use of these compositions and of the derivatives themselves for labelling biological molecules (or “biomolecules”) such as nucleic acids, oligonucleotides, proteins, polypeptides, plasmids, and the like, for their examination in particular by two-photon microscopy, and to biomolecules labelled with the said derivatives.
摘要:
A high impedance electrooptical transducer, such as for use in an optical output sensor. The transducer includes an electrosensitive element that emits photoluminescence radiation when illuminated by an excitation radiation. The electrosensitive element includes conjugate photoluminescent oligomers. The photoluminescence efficiency of the conjugate oligomers varies in the presence of an electrical field.
摘要:
A transparent, organic polymer substrate organized for optical frequency conversion is prepared by subjecting a material of a transparent, organic polymer which incorporates therein transparent, active organic molecules which have a second order, microscopic, optical nonlinearity to the simultaneous action of a first laser beam at fundamental frequency .omega. and a second laser beam of second harmonic frequency 2 .omega. for a time adequate to induce a second order, macroscopic nonlinearity in the transparent active organic molecules in the structure.