39 results about "Microtechnology" patented technology

Microstructured composite particles obtainable by a process in which large particles are bonded to small particles. The composite particles are preferably used as an additive, especially as a polymer additive, as an additive or starting material for the production of components, for applications in medical technology and / or in microtechnology and / or for the production of foamed articles.

The invention relates to a micro-device for non-invasive and selective separation and extraction of particles in polydispersed suspensions by means of the strategic use of ultrasounds, laminar flow and standing wave effects in a channel produced in a chip by means of microtechnology. Said device is a resonant multi-layer system comprising a modified ''lambda quarter wavelength'' treatment channel, which enables the particles to be channelled and separated in a flow inside the substrate channel without touching the walls of the device, in order to avoid problems of adherence. Said micro-device can be used in the field of biomedicine and / or biotechnology for the separation and concentration of cells, preferably human cells, that can be used for investigative and medical methods for diagnosis and treatment.

This invention deals with novel method and apparatus for positioning and motion control of the elements (mirrors) of a Fresnel reflector solar concentrator tracking heliostat array by induced and / or permanent dipole coupling to an electronic grid to produce angular deflection, and rotational motion. Thus forces and torques are produced without the use of internal moving parts. Control is achieved without recourse to magnetic fields, by means of high electric fields which may be attained at relatively low voltages. At low voltages, the instant invention exceeds the capability of conventional systems. It can perform dynamic motion control with independent amplitude and frequency modulation. It is ideally suited for maximization of solar energy focused by the array onto a receiver. Since there are no internal moving parts, the instant invention is the most adapted for fabrication from the mini- to the microtechnology realm. Furthermore it provides less costly and greater ease of manufacture from the mini- to the micro-realm.

This invention deals with novel method and apparatus for positioning and motion control of the elements (mirrors) of a Fresnel reflector solar concentrator tracking heliostat array by induced and / or permanent dipole coupling to an electronic grid to produce angular deflection, and rotational motion. Thus forces and torques are produced without the use of internal moving parts. Control is achieved without recourse to magnetic fields, by means of high electric fields which may be attained at relatively low voltages. At low voltages, the instant invention exceeds the capability of conventional systems. It can perform dynamic motion control with independent amplitude and frequency modulation. It is ideally suited for maximization of solar energy focused by the array onto a receiver. Since there are no internal moving parts, the instant invention is the most adapted for fabrication from the mini- to the microtechnology realm. Furthermore it provides less costly and greater ease of manufacture from the mini- to the micro-realm.

A mass magnifier is created by combining the properties of permanent magnets or electromagnets with the property of mu-metal to create a novel energy storage device. In a system mu-metal is placed in the magnetic field created by a magnet or electromagnetic in a manner to provide an energy storage device, similar to a fly wheel. The system includes a set of magnets arranged in a circle around a cylinder in a stationary position, effectively forming a stator. Another set of opposing magnets are arranged to form a rotor. When the rotor is rotated, mu-metal material is inserted between the rotor and stator magnets in a manner so that the rotor will remain in motion in a desired rotation direction, even if an opposing force is applied to the rotor axle. The system, thus, forms an energy storage device similar to a fly wheel. The system can also provide energy storage for conventional machines or for smaller micro-technology or nano-technology type devices.

The invention belongs to the technical field of micro-spectrum imaging detection, and relates to a reflection-type confocal CARS micro-spectrum test method and a device. According to the reflection-type confocal CARS micro-spectrum test method, fusion of laser confocal microtechnique and CARS spectrum detection technology is realized, a binary beam splitting system is adopted for nondestructive separation of Reyleigh scattering light and CARS light, wherein CARS light is used for spectrum detection, and Reyleigh scattering light is used for geometric positioning. Accurate capturing and positioning of exciting light focal point position is realized based on the corresponding performance of confocal curve top point to focal point, high precision geometric detection and high spatial resolution spectrum detection are realized, and the method and the device capable of realizing sample microdmain high spatial resolution spectrum detection are constructed. The intensity of sample information-loaded Raman scattering light excited via combination of CARS microtechnique is much higher than that of conventional spontaneous Raman light, excitation time is short, and possibility is provided for rapid detection of biological samples and chemical materials. The reflection-type confocal CARS micro-spectrum test method possesses advantages such as accurate positioning, high spatial resolution, high spectrum detection sensitivity, and controllable measuring focusing spot size; and application prospect in the fields such as biomedicine and material detection is promising.

The invention relates to a process for fabricating a hydrogenated amorphous silicon carbide film having through-pores, which comprises:a) the formation on a substrate of a film consisting of an amorphous hydrogenated silicon carbide matrix in which silicon oxide through-nanowires are dispersed; and thenb) the selective destruction by a chemical agent of the silicon oxide nanowires present in the film formed at step a).Applications: microelectronics and micro-technology, in all fabrication processes that involve the degradation of a sacrificial material by diffusion of a chemical agent through a film permeable to this agent for the production of air gaps, in particular the fabrication of air-gap interconnects for integrated circuits.

The invention belongs to the technical field of biochemical separation and analysis, and particularly relates to a micro-fluidic chip, a system and a method for sorting and enriching cells in cerebrospinal fluid. The chip can avoid pretreatment operations such as sample pretreatment and cell labeling and realize fast and efficient sorting and enriching functions for a small quantity of cells in the cerebrospinal fluid and further can realize in-situ counting and fast distinguishing of the small quantity of cells in the cerebrospinal fluid in combination with an in-situ microtechnique. The system integrates fast and efficient separation and enrichment of the small quantity of cells in the cerebrospinal fluid and in-situ microscopic observation, can realize sorting, enrichment, counting, observation and detection for the small quantity of cells in the cerebrospinal fluid, is high in functionality and high in efficiency, and can be used for clinical fast and efficient detection for cerebrospinal fluid cells.

A device (6) to sample molecules of biological interest is described. The device (6) includes capture zones (10) whose developed surface area is much greater than the surface so that sampling by contact allows a sufficient quantity of molecules to be obtained to achieve reliable analysis, whilst being sized so that the device (6) is neither invasive nor aggressive.In particular, the device comprises tiered capture zones (10) located on a support (12) fabricated using microtechnology techniques; the capture zones (10) may advantageously be functionalised.

The invention is a process for producing an electromechanical device including a movable portion that is able to deform with respect to a fixed portion. The process implements steps based on fabrication microtechnologies, applied to a substrate including an upper layer, an intermediate layer and a lower layer. These steps are:a) forming first apertures in the upper layer;b) forming an empty cavity in the intermediate layer, which step is referred to as a pre-release step because a central portion of the upper layer lying between the first apertures is pre-released;c) applying what is called a blocking layer to the upper layer, this layer covering the first apertures, the blocking layer and the central portion together forming a suspended microstructure above the empty cavity;d) producing a boundary trench in the suspended microstructure, so as to form, in this microstructure, a movable portion and a fixed portion, the movable portion forming a movable member of the electromechanical device.

The present invention relates to a method and a device for manufacturing a three-dimensional object, wherein the object is generated by successively solidifying single layers of fluid or powdery solidifiable building material by the action of electromagnetic radiation. The method comprises steps for emitting a first pulsed electromagnetic radiation onto a first area of a layer of the building material, and for emitting a second continuous electromagnetic radiation onto a second area of the layer of the building material.

The invention discloses a method for detecting a dielectric constant of a material by using the scanning probe microtechnique. The method comprises the following steps: firstly, obtaining an experimental value of a capacitance gradient between a probe and a sample by utilizing electric field gradient detection of an electrostatic force microscope; establishing a theoretical model of the capacitance between the probe samples along with the dielectric constant change of the samples by utilizing a mirror image charge method; and finally, comparing the experimental value with a theoretical model to deduce the dielectric constant of the sample. The method can obtain the dielectric constant information of the sample under the nanoscale, has the advantage of nondestructive detection, and is suitable for characterization of various dielectric materials such as insulators or semiconductors.

The invention is directed to a precision release vapor dispenser for dispensing material from a pressurized source of material. The precision release vapor dispenser comprises dispensing means for dispensing into the environment the material from the source of material, a microtechnology and / or nanotechnology fabricated component coupled to the dispensing means for controlling the release rate of the material to be dispensed, and means for initiating the dispensing means. The microtechnology and / or nanotechnology fabricated component may be a microchip that is a multilayer device fabricated using micro-electromechanical systems (MEMS) fabrication techniques.

A method is provided for producing at least one electrical via in a substrate, the method comprising: producing a protective layer over a component structure which has been produced or is present on a front side of the substrate; forming at least one contact hole which extends from a surface of a backside of the substrate to a contact surface of the component structure; forming a metal-containing and thus conductive lining in the at least one contact hole creating a hollow electrically conductive structure in the at least one contact hole; and applying a passivation layer over the backside of the substrate, the passivation layer spanning over the hollow electrically conductive structure for forming the at least one electrical via. Also provided is a micro-technical component comprising at least one electrical via.

The invention discloses a method for constructing a periodic strip domain in a ferroelectric film by using a pinpoint electric field, belongs to the technical field of micro-nano structures, and aimsto grow a bismuth ferrite film by using a pulsed laser deposition technology and ensure that the film contains defects under a low-oxygen-pressure growth condition. The pinpoint electric field is generated by applying bias voltage to a pinpoint of the piezoelectric force microscope; the out-of-plane polarization and the in-plane polarization in the thin film are turned over and redirected at the same time under the action of a needle point electric field, and a nanoscale high-density periodic strip domain is formed; and the constructed strip domain has good stability and can be used for a high-density ferroelectric random access memory. According to the preparation method, the pulse laser deposition technology is mature, the vector piezoelectric force microscopy technology based on the scanning probe microscope is easy to operate, and good practicability is achieved.

The embodiment of the invention discloses a super-resolution microscopic imaging system. The system comprises an excitation light source generation module, an imaging module, a focal plane locking module and a control and data acquisition module, wherein the excitation light source generation module is used for generating an excitation light source; the imaging module is used for receiving the excitation light source, enabling the excitation light source to irradiate a sample on the sample slide to enable a view field area of the sample to generate fluorescent light, and collecting the reflected fluorescent light through the camera; the focal plane locking module is used for emitting laser to the imaging module and receiving the laser reflected by the imaging module so as to lock the distance between an objective lens in the imaging module and a sample slide; and the control and data acquisition module is used for controlling and adjusting optical elements in the excitation light source generation module, the imaging module and the focal plane locking module, and acquiring fluorescence data obtained by the imaging module for data analysis. According to the system, a compact, adjustable and controllable single-molecule positioning microtechnique with high automation degree is realized, and the precision and the accuracy are improved.

A miniature magnetic field sensor including a magnetic core which co-operates with at least one excitation coil and a detection coil. In the magnetic field sensor, the core is open and includes at least one bar having tapered ends. A method of fabricating the sensor is provided using microtechnology techniques.

The invention discloses a multi-color structured light illumination super-resolution microscopic imaging method based on a DMD (Digital Micromirror Device), which is characterized in that the DMD is used as a digital blazed grating to diffract laser with different wavelengths, and positive and negative first-order diffraction light generated by Fourier filtering is subjected to accurate polarization modulation and then interferes on the surface of a fluorescent sample to be detected to generate a high-contrast stripe illumination pattern; fringe patterns in different directions and phases are loaded through the DMD to quickly perform direction rotation and phase movement on interference fringes, and a plurality of obtained original fluorescence intensity images are reconstructed to obtain a super-resolution microscopic image. The invention further discloses a multi-color structured light illumination super-resolution microscopic imaging device based on the DMD, different laser wavelengths are rapidly switched by a galvanometer to be gated or cut off to enter different square-core multimode optical fibers, and the incident angles of all the wavelengths are aligned by adjusting the output ends of the square-core multimode optical fibers. Therefore, the blaze level corresponding to each wavelength is ensured to be located at the same position so as to facilitate Fourier filtering. The device is low in complexity and high in flexibility, stability and expandability, and meanwhile, a modular design is adopted, so that the system can be extensively applied to imaging research of a three-dimensional interference type structure illumination obvious microtechnology and a projection type structure illumination obvious microtechnology.

The invention provides a calibratable sub-nanoscale high-precision micro-displacement device and application thereof, and has the following beneficial effects that open-loop nonlinear control caused by inherent hysteresis and creep characteristics of a piezoelectric actuator can be effectively eliminated through piezoelectric closed-loop control based on capacitance micrometer feedback; in order to realize high-precision micro-displacement control of sub-nano-scale resolution capability, but the control capability still stays at a qualitative resolution level and cannot be used as a positioning reference in the field of precision positioning, the FP cavity equipped on the micro-displacement device can realize quantitative calibration of sub-nano-scale resolution capability micro-displacement on a high-performance spectrograph; the calibration result can be traced to the FP cavity transmission spectrum peak spacing so as to establish the quantitative calibration relationship between the applied voltage on the piezoelectric actuator and the sub-nanometer magnitude resolution capability micro displacement. Therefore, the problems of quantitative calibration of piezoelectric closed-loop control sub-nanometer magnitude resolution and nanoscale high-precision micro-displacement control based on a capacitance micrometer technology can be effectively solved.

Microswitch for application in electrical switches or relays in which a movable massive element is moved using a collected charge stored in a capacitor (1). Independent claims are included for an apparatus for moving a tool and for moving a motor in the area of microtechnology and nanotechnology, for moving tractors, submarines, airplanes.

The invention discloses a nano-metal alloy banknote, which is characterized in that a bimetallic alloy {precious metal and non-precious metal} nano-crystalline grain material / or bimetallic alloy {non-precious metal and non-precious metal} nano-particle powder is subjected to microcosmic characterization and control technologies such as modern electron microscopy and the like; a photoetching technology or an electron beam etching technology can be combined with a nanoparticle self-assembly technology for use; equipment and an ultra-precision electronic device which adopt an advanced computer design / manufacturing technology and an existing factory production line are used; an advanced computer design / manufacturing system, a target design technology, a computer simulation technology, an assembly technology and the like are applied; the main body of the nanometer metal alloy banknote made of the super-strength, intelligent and corrosion-resistant bimetal alloy nanometer material is formedby a high-speed standard machine, and a built-in 'nanometer compact film strip chip' is combined with 'nanometer material storage intelligent identification+quantum data information intelligent secretkey' and the like to be manufactured into an integral kit product.

The invention discloses an in-situ growth method of a super-strong metal tungsten single crystal nanowire with a large length-to-diameter ratio and low defect concentration. The specific method is: based on the in-situ transmission electron microscopy technique, a voltage is applied to two tungsten tips in contact with each other to generate a current, and the metal is locally melted and disconnected by Joule heating; the molten metal is rapidly solidified in the strong electric field between the two disconnected tips , under the action of an electric field, a metal tungsten single crystal nanowire with a large aspect ratio and an extremely low defect density is generated. The invention realizes one-step growth of a single tungsten single crystal nanowire, with simple steps and high efficiency (the growth time of a single nanowire is much less than 1s); the prepared nanowire has uniform size, few defects, high crystallinity, and no pollution on the surface , large elastic strain and high strength.

A kind of multi-layer topical slow-release microsphere preparation loaded with sodium alginate and chitosan and loaded with VEGF and vancomycin, its preparation method and its application in the preparation of medicines for treating bone defects, bone tissue regeneration and wound healing application. The invention belongs to the technical field of drug slow-release microspheres. In the present invention, except that the preparation of the core sphere is a dripping method, the preparation of the other multilayer microspheres is based on the principle of mutual attraction of positive and negative charges and layer-by-layer self-assembly. Sodium alginate and chitosan are both natural polymer polysaccharides. Chitosan is a polycationic polymer material with a large number of free amino groups in the side chain structure; and sodium alginate is a polyanionic material with a large number of carboxyl groups on the molecular side chain. , the two undergo a complexation reaction through the mutual attraction of positive and negative charges, and are sequentially wrapped to form multi-layer balls of core-shell type multi-layer sustained-release drugs according to the principle of layer-by-layer self-assembly, so that the product of the present invention can simultaneously promote local angiogenesis and improve blood circulation. And the effect of controlling local infection.

The invention discloses an electronic product supplying power through a germanium microtechnology. The microelectronic product is driven by germanium, so that a horrible radiating substance is replaced, the implanted germanium microelectronic product is more relieving and safer to a human body, and production is easy.

The invention relates to a process for manufacturing a permeable dielectric film, which comprises:a) the deposition on a substrate of a film constituted of a material comprising silicon, carbon, hydrogen, oxygen and, possibly, nitrogen and / or fluorine, a majority of Si—C bonds and a proportion of Si—O bonds such that the oxygen present in said material represents less than 30 atom %; and thenb) the selective destruction with a chemical agent of the Si—O bonds present in the film deposited in step a).Applications: microelectronics and microtechnology, in any manufacturing process that involves the degradation of a sacrificial material by diffusion of a chemical agent through a film that is permeable to this agent, for the production of air gaps, in particular the manufacture of air-gap interconnects for integrated circuits.

The present application discloses a semiconductor structure measurement and boundary feature extraction method and device. The boundary feature extraction method includes: acquiring a cross-sectional image of a semiconductor structure output by a transmission electron microscope, including a cross-sectional pattern of at least one hole, and the plane where the cross-sectional pattern is located is perpendicular to the axial direction of the hole; a preset pattern; and identifying the boundary of the first preset pattern, wherein the first preset pattern is composed of polysilicon in the hole. The boundary feature extraction method utilizes the special properties of the interaction between polysilicon and electrons, enhances the contrast of the first preset pattern, and achieves the purpose of clearly identifying the boundary of the first preset pattern.

The present invention relates to a carrier system for micro-optical and / or other functional elements of microtechnology, including a base plate and one or more retaining elements for the functional elements that are secured on the base plate. The suggested carrier system is characterized by the fact that the retaining elements are constructed partly or entirely from multiple thin, stacked plates that have a plate thickness of less than 1 mm. In this way, retaining elements for example made from glass or glass ceramic may be created extremely precisely in practically any geometrical shape.