摘要:
The invention relates to the field of optical information recording. In order to prevent abusive or fraudulent use of storage media, the invention provides a process for intentional degradation of information by application of a laser power below the normal power for reading information recorded in super-resolution on the media. This process relies on the surprising observation that a laser power below the super-resolution read power produces an irreversible degradation of the information recorded. This observation has been made with regard to media composed of a three-layer structure comprising an InSb or GaSb layer between two ZnS/SiO2 layers. Application for protecting sensitive data.
摘要:
The invention relates to optical information storage.According to the invention, what is provided is a high-resolution optical information storage structure, comprising a substrate (10) provided with physical marks, the geometric configuration of which defines the information recorded, a superposition of three layers over the top of the marks on the substrate, and a transparent protective layer over the top of this superposition, the superposition comprising an indium antimonide or gallium antimonide layer (14) inserted between two ZnS/SiO2 dielectric layers (12, 16).The information may be prerecorded in the substrate with a resolution (in terms of size and space) better than the theoretical read resolution permitted by the wavelength of the read laser. The non-linearity in behaviour of the three-layer superposition allows the information to be read if the laser power is well chosen.
摘要:
The present invention relates to a method for detection of a molecular recognition reaction without labelling and a device for using this method.This invention concerns the general field of detection and analysis of molecular recognition between a first and a second molecule, for example a biological molecule.The method of the present invention consists of the detection of the molecular recognition by a photothermal method.
摘要:
A method and a device, using a system of plural cavity resonators, enabling to measure the light absorption or diffusion of biological samples. A measurement of low absorption or diffusion can be achieved and for example be applied for measuring the hybridization of DNA strands.
摘要:
The present invention relates to a substrate coated with a transparent organic film, to a process for the manufacture of this substrate coated with the transparent organic film and to its use. The substrate coated with a film is characterized in that the film is an electrical insulator organic polymer which is transparent in at least one wavelength range and in that the said film is combined with a label which emits at least in the said wavelength range. It has an application in particular in a means for the detection of a chemical entity, for example a biochip, in a process for the quality control, a process for the certification or a process for the authentication of an object.
摘要:
A device and process for the amplification of fluorescence emitted by an areal sample. The device includes a support transmitting all or part of a fluorescence signal and configured to support the areal sample and a thin layer interposed between the support and the areal sample. The thin layer has a refractive index greater than the refractive index of the support and than the refractive index of a medium flooding the areal sample during a fluorescence measurement. The thickness of the thin layer is chosen so that the thin layer transmits all or part of the fluorescence signal which is measured after passing through the support.
摘要:
The invention relates to a low-pass optical filtering device for the UV band, comprising:a dielectric stacking (14) ensuring an anti-reflective function for .lambda. .lambda..sub.c.
摘要:
The invention concerns a device for enhancing fluorescence comprising a support (10) carrying fluorescence enhancement means (11), the fluorescence enhancement means offering a reception surface for chemical or biological elements intended to be read by detection of a fluorescence signal emitted by a fluorophore, associated with the chemical or biological elements, under the effect of an excitation light beam. The fluorescence enhancement means (11) is made up of a thin, transparent, dielectric layer or a stack of thin, transparent, dielectric layers (12 to 16) ensuring a mirror function for the fluorescence signal and excitation light beam, the material of the thin layer or of each thin layer of the stack being chosen from among the following materials: TiO2, Ta2O5, HfO2, ZrO2, MgO, SiO2, Si3N4, MgF2 and YF3. The fluorescence enhancement device may be used for a biological or chemical optic sensor.
摘要翻译:本发明涉及一种用于增强荧光的装置,其包括载有荧光增强装置(11)的载体(10),所述荧光增强装置提供用于通过检测由荧光团发射的荧光信号而被读取的化学或生物元件的接收表面, 在激发光束的作用下与化学或生物元素相关联。 荧光增强装置(11)由薄的,透明的介电层或薄的,透明的电介质层(12至16)组成,确保了荧光信号和激发光束的反射镜功能, 薄层或每层薄层选自以下材料:TiO 2,Ta 2 O 5,HfO 2,ZrO 2,MgO,SiO 2,Si 3 N 4,MgF 2和YF 3。 荧光增强装置可用于生物或化学光学传感器。
摘要:
A surface plasmon microsensor or a nanosensor for chemical or biological species including pads distributed on the surface of a support, the pads including an electrically conductive material and being capable of immobilizing the chemical or biological species. The pads have a dimension less than 1 μm.
摘要:
A device for measuring the dimensional or structural characteristics of an object. A detector forms an optical Fourier transform image of an elemental surface of the object in an image focal plane. A processor produces data relating to at least one dimensional and/or structural characteristic of the object from the information provided by the detector.