38 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.

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 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 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.

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.

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 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 then
  • b) 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 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.