50 results about "Micro nanotechnology" patented technology

This invention deals with novel method and apparatus for positioning and motion control by rapid-response motorless linear motion, angular deflection, and continuous rotational motion utilizing the force due to electrons, ions, and / or neutrals. 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 over a wide range of dimensions and signal bandwidth with independent amplitude and frequency modulation. Since there are no internal moving parts, the instant invention is the most adapted for fabrication at the micro and nanotechnology realms. Furthermore it provides less costly and greater ease of manufacture from the nano-to the macro-realm.

The invention provides an atomic force microscope probe based on structures of a carbon nano tube and a planar wave guide, belonging to the technical field of micronano. The atomic force microscope probe comprises a probe substrate platform compatible with the atomic force microscope, a planar wave guide attached to the surface of the probe substrate platform and a carbon nano tube as a probe point. when in use, the planar waveguide structure is connected to a high-frequency (microwave) measuring instrument, and the whole probe is arranged to the atomic force microscope (AFM) and is scanned or positioned by the standard operation of the AFM, so that the surface topography of a measuring sample can be measured and the high-frequency characteristics of the measuring sample can be synchronously measured in situ. Particularly, the high-frequency (microwave) transmission with small signal loss can be carried out by using the planar waveguide; the carbon nanotube as the probe point has excellent high-frequency transmission property and the mechanical property; the diameter of the carbon nanotube can be adjusted by controlling growth conditions; in addition, the invention is suitable for high-precision and high-frequency (high-frequency) measurement.

The invention belongs to the technical field of test of optical precise imaging, and relates to a laser stimulated emission depletion (STED) and three-dimensional superresolving spectral pupil differential confocal imaging method and device. The method and device are characterized in that the spectral pupil laser differential confocal detecting technology and the laser STED imaging technology are organically integrated, the characteristics of high resolution and high scatter suppression of the spectral pupil laser differential confocal detecting technology are integrated, the laser differential confocal technology is performed to improve the axial resolution capacity, the STED technology is performed to improve the transverse resolution capacity, and as a result, the spatial resolution capacity of the system and the resistance to sample scattering can be improved. The device comprises an excitation laser system, a first dichroic mirror, a quarter-wave plate, a measuring objective lens, a sample, a scanning workbench, a quenching laser system, a beam-shaping system, a second dichroic mirror, a spectral pupil differential confocal detecting system and a data processing module. The method and device have an extensive application prospect in the micro-nano technical field with the high spatial resolution and high scattering sample suppression three-dimensional superresolving imaging and detecting capacities.

The invention belongs to the technical field of optical precise imaging test, and relates to a laser stimulated emission depletion (STED) and three-dimensional superresolving differential confocal imaging method and device. The method and device are characterized in that the laser differential confocal detecting technology and the laser STED imaging technology are organically integrated, the laser differential confocal technology is performed to improve the axial resolution capacity, and while the STED technology is performed to improve the transverse solution capacity, so that the spatial resolution capacity of the system can be improved. The device comprises an excitation laser system, a first dichroic mirror, a quarter-wave plate, an objective lens, a sample, a scanning workbench, a quenching laser system, a beam shaping system, a second dichroic mirror, a differential confocal detecting system and a data processing system. The method and device have an extensive application prospect in the micro-nano technical field with the high spatial resolution three-dimensional superresolving imaging and detecting capacities.

The invention relates to a method for rapidly corroding and patterning an indium tin oxide (ITO) surface by using an electrochemical technology, belonging to the fields of electrochemistry and micro-nanotechnologies. Aiming at the problem of the traditional ITO-corroding method, the method for rapidly corroding and patterning the indium tin oxide surface by using the electrochemical technology, provided by the invention, comprises the steps as follows: (1) washing the ITO surface; (2) pressing a used photoresist into a protective film on an ITO substrate by using a plastic-envelop machine, directly placing a mask of a used pattern, performing ultraviolet exposure and developing, and forming and washing to form a needed pattern; (3) corroding exposed ITO part of the photoresist on the ITO surface with diluted hydrochloric acid as a corrosive liquid by using cyclic voltammetry or chronoamperometry and the electrochemical technology; and (4) washing an electrochemically corroded ITO glass sheet by using an alkali solution, removing a protective photoresist film; and drying by using N2 to obtain a patterned ITO surface. The method for rapidly corroding and patterning the indium tin oxide surface by using the electrochemical technology has the advantages of simplicity in operation, high speed, good corrosive effect, clearness of borders, low cost and the like.

The invention relates to a laser implantation preparation method for a multi-dimensional continuous fine structure, and belongs to the fields of surface fine structure processing and micro / nano technologies. Through 3D printing type scan feeding of a movable three-dimensional fine platform in combination with repeated irradiation of laser light, a multi-layer fine structure is prepared on a substrate by continuously supplementing a suspension containing fine particles. According to the method, a multi-layer fine structure of the same material and a multi-layer fine structure of different materials can be prepared on the substrate. Through adoption of the method, the bonding strength among layers of an implanted fine structure can be enhanced, and the bonding strength and appearance of the implanted structure can be improved. In the method, laser light does not directly act on a target material, so that melting and vaporization of the target material are avoided, and the repeating accuracy of a scanning track can be ensured.

The invention discloses an entire-column preparation method of a nano-particle stabled Pickering emulsion based packing and relates to the technical field of analytical detection and micro-nano, in particular to a preparation method of an entire column with an aim to mainly solve problems that existing packings of the entire column are different in hydrophilic-hydrophobic properties and cannot be separated from molecules different in enrichment hydrophilicities. The method includes: 1), preparing a nano-particle stabled Pickering emulsion; 2), pretreating the entire column; 3), filling the Pickering in the entire column; 4), eluting the entire column to obtain the entire column of the nano-particle stabled Pickering emulsion based packing. The method has the advantages of rapidness, high efficiency, convenience, low cost and environment friendliness, and meanwhile, the packing can be prepared in large quantities and reused; the entire-column preparation method of the nano-particle stabled Pickering emulsion based packing can be acquired.

A medicine-carrying chitosan / sodium alginate slow-release microparticle algistat is disclosed, including slow-release microparticles and a carboxylic acid type active allelochemical embedded in the microparticles. The slow-release microparticles are formed from sodium alginate polyanion and chitosan amino cations through ion crosslinking reaction. Through combination of micro-nano techniques, chitosan and sodium alginate are adopted as carrier materials to embed the carboxylic acid type algae suppression active substance to prepare the slow-release microparticle algistat having a small particle size. The algistat is not liable to expand or sink, can prolong Microcystis aeruginosa suppressing time of the carboxylic acid type active allelochemical in water bodies, can reduce the cost, and can effectively solves a problem that direct addition of the carboxylic acid type active allelochemical into a water body has defects of large active substance dosage, easy loss, incapability of reaching an algae suppression concentration, and the like. The adopted chitosan and the sodium alginate are natural nontoxic biodegradable polymer materials good in biocompatibility, and can effectively avoid secondary pollution in algae suppression processes. The algistat can be widely applied for natural water bodies such as ponds, reservoirs and lakes.

A medicine-carrying chitosan slow-release microparticle algistat and a preparing method thereof are disclosed. The algistat includes slow-release microparticles and a carboxylic acid type active allelochemical embedded in the microparticles. The slow-release microparticles are formed from chitosan amino cations and sodium tripolyphosphate polyanion through ion crosslinking reaction. Through combination of micro-nano techniques, chitosan and sodium tripolyphosphate are adopted as carrier materials to embed the carboxylic acid type algae suppression active substance to prepare the slow-release microparticle algistat which has a small particle size and which is not liable to expand or sink. The Microcystis aeruginosa suppressing time of the carboxylic acid type active allelochemical in waterbodies is prolonged, the cost is reduced, and a problem that direct addition of the carboxylic acid type active allelochemical into a water body has defects of large active substance dosage, easy loss, incapability of reaching an algae suppression concentration, and the like can be effectively solved. The adopted chitosan and the sodium tripolyphosphate are natural nontoxic biodegradable polymer materials good in biocompatibility, and can effectively avoid secondary pollution in algae suppression processes. The algistat can be widely applied for natural water bodies such as ponds, reservoirs and lakes.

The invention belongs to the research field of the optical fiber micro-nanotechnology, in particular to an optical-driven vibration motor device capable of stably changing the position and the vibration frequency of absorbent particles. The device comprises an optical tweezers system consisting of a first optical fiber light source, a second optical fiber light source, an optical fiber wavelengthdivision multiplexer and a single-mode optical fiber, and the optical tweezers system, an absorbent black sphere and liquid form the optical-driven vibration motor device. Two kinds of photophoretic forces are used to play an optical driving role on the absorbent particles, the absorbent black sphere can be stably captured in a non-contact mode, and the position and the vibration frequency of theabsorbent black sphere driven by the optical-driven vibration motor can be controlled. The position and the vibration frequency of absorbent particles can be changed and driven at the same time through changing the power of two light sources; the position of the device is accurately controlled and the structure is simple; the absorbent particles in the liquid background can be easily optically driven; and the adopted device is low in price, the making method is simple, and the device is suitable for being promoted in the field of biomedicine.