162 results about "Liquid cell" patented technology

The invention provides a liquid cell for an atomic force microscope. The liquid cell includes a liquid cell housing with an internal cavity to contain a fluid, a plurality of conductive feedthroughs traversing the liquid cell housing between the internal cavity and a dry side of the liquid cell, a cantilevered probe coupled to the liquid cell housing, and a piezoelectric drive element disposed on the cantilevered probe. The cantilevered probe is actuated when a drive voltage is applied to the piezoelectric drive element through at least one of the conductive feedthroughs. A method of imaging an object in a liquid medium and a method of sensing a target species with the liquid cell are also disclosed.

A liquid crystal display includes a liquid crystal cell including a first transparent substrate and a second substrate, and a reflector attached to the outer surface of the first transparent substrate with a bonding layer therebetween. A first retarder is disposed on the outer surface of the second transparent substrate, a second retarder is disposed on the first retarder, and a polarizer is disposed on the second retarder. The reflector includes a resin substrate having an irregular surface and a metal reflection layer also having an irregular surface that corresponds to the irregular surface of the reflector. The reflector is attached to the liquid cell so that the metal reflector layer faces the first transparent substrate.

A zoom lens is disclosed having a zoom ratio larger than four with a field of view at the short focal length position larger than 85 degrees and with a minimal number of moving groups. The zoom lens utilizes a compound zoom structure comprising an NP or NPP zoom kernel followed by a P or PP zoom relay, with only two or three moving groups that can be used for both zooming, focusing and athermalization. An overall compact package size is achieved by the use of prisms to fold the optical path in strategic locations. An optional variable power liquid cell can provide close focusing with little or no focus breathing.

A radiation sensing method and device that is used to measure physical properties of materials over a wide dynamic range. The sensor (20) comprises multiple radiation sources and multiple detectors at multiple separation distances. The detected signals from the different sources are separated and then combined mathematically in a manner such that the combination is self-compensated for both component drift and changes in radiation coupling efficiency between the source or detector and the material of interest. In a preferred embodiment, the biomass in a liquid cell culture (54) is measured with high accuracy over a wide dynamic range using optical wavelength radiation. The measurement can be made with the sensor external to the liquid culture container in a manner that is compensated for the thickness of the container window (50).

This invention relates to body liquid cell olefin slice making process, which comprises pre-processing, decenter deposition and fixing dehydrate wax impregnation, burying, slicing and HE dying and sealing. The invention works together with daily work with clear background of HE and immune organization dying without dark background of agar burying and processing the molecule burying and improves the accuracy of the body liquid cell diagnose.

A tunable optical component includes comprises a plurality of individual tunable liquid cells regularly arranged and integrated to at least one cell structure forming an array on the supporting substrate. A single liquid cell comprises several integrated cell walls, the cell walls projecting away from the supporting substrate and having a closed base area and an open cell surface at the cell wall edges. The liquid cell is filled with at least two liquids or fluids to provide at least one tunable interface area for varying the optical characteristic of the liquid cell.

The invention discloses a bottle arranging method and a bottle arranging machine thereof; a pump (201) is used for pumping liquid at the tail part of a liquid cell (200), a conveying pipe is used for conveying the liquid to the front end of the liquid cell for forming circular flowing stable liquid flow in the liquid cell; open-ended glass bottles (800) to be arranged are randomly arranged in theliquid cell; after the glass bottles are poured with certain amount of liquid, bottle openings automatically face up and lead the bottles to float on the liquid, the bottles are carried by the liquidflow to a track lane mechanism (300) and automatically array orderly into a plurality of lines; a bottle raising mechanism (400) raises the bottles from the front end of the track lane mechanism lineby line and carries the bottles to a liquid poring mechanism; the liquid in the bottle is poured out; the glass bottles are reversed to enable the bottle opening to turn vertically or obliquely upwards and vertically fall on a transitional board so as to be linked up with the next working procedure. As stable liquid flow is adopted, the glass bottles can stably float and the liquid pouring is more stable, thus better ensuring the bottle openings to vertically turn upward and float, reducing sinking, avoiding disordered collision of the glass bottles as well as reducing damage; moreover, the labor intensity and the cost are greatly reduced and the efficiency is improved.

The invention discloses a simple thin liquid-based cytology examine method applied for the gynecological examination, the cervical cancer general examine and the cervical cancer preceding lesion of selected crowd, the steps including: using the cervical cells brush and the scraper to collect samples, put samples in the liquid-based cell preservation solution, add base liquid cell processing solution, oscillate, centrifugally separate, take and discard the supernatant samples liquid, using adding samples gun to assimilate sediment samples, smear, sheet drying, using 95% ethanol marinate or spray for fixed, washing and dyeing. The invention has simple method, small steps, high positive detection rate, low misdiagnosis rate, low cost, and it can effectively eliminate the red blood cells, mucus and other interference components from the cervical cytology detection specimens, with good sheet-producing result.

A nanofiber adsorption based array solid-phase extraction device relates to an extraction device applied to quick enrichment and purification pretreatment of micro and trace samples of biomedical complicated samples, environmental samples, toxicants and pollutants. The nanofiber adsorption based array solid-phase extraction device comprises five layers from bottom to top; the lowermost is a base on which a waste liquid cell (9) capable of being conveniently taken out is arranged; a receiving tube support (8) is arranged above the waste liquid cell (9); a fixed solid-phase extraction small-column support (7) is arranged above the receiving tube support (8); a layer of fixed tube inserting rack (6) is arranged above the fixed solid-phase extraction small-column support (7); one end of the tube inserting rack (6) is provided with a connecting shaft (4) which is sleeved with a pressplate (5) capable of sliding vertically and rotating laterally; an injector (3) is fixed on the tube inserting rack (6); a push rod end of the injector (3) is connected with the pressplate (5); the front end of the injector (3) is provided with an extraction small column (10); a small test tube (11) is positioned on the receiving tube support (8); and the front end of the extraction small column (10) passes through the solid-phase extraction small-column support (7) and is positioned at an opening end of the small test tube (11).

The present invention relates to a microflow control chip and its preparation method. Said method includes the following steps: selecting glass component, adding proper quantity of photosensitizer and crystal nucleus agent, high-temperature melting, drawing or pouring to obtain sheet material, grinding and polishing to obtain glass sheet, making the glass sheet successively undergo the processes of optical irradiation, high temperature and acid corrosion treatment so as to obtain the glass chip with microflow channel, liquid cell, high-pressure isolation structure and hole array for integrating electrodes; utilizing plasma chemical gas-phase deposition method, hot wire chemical gas-phase deposition method or high-temperature cracking method to respectively integrate nano carbon tube working electrode, reference electrode and electrophoretic separation electrode in the correspondent holes and packaging so as to obtain the invented microflow control chip.

The invention discloses a device and method for detecting the no reflection objects in liquid using backward stimulated Brillouin scattering. The device comprises a single longitudinal mode laser, reflector M1, 1/2 wave plate, glan prism, faraday 45 degree activizer, reflector M2, divergent lens, convergent lens, liquid cell containing the objects to be detected and photo detector. The laser from the single longitudinal mode laser converges in the liquid cell by the above system. When the light intensity of the convergence point reaches to the threshold of the stimulates Brillouin scattering, the backward stimulated Brillouin scattering is generated and returns at the original path, and output at the reflection port of the glan prism and received using the photo detector. When there is object at the laser convergence point in liquid, the laser is blocked and the backward stimulated Brillouin scattering is not generated, therefore there is no signal to output. The presentation of the object in liquid and the depth thereof can be detected by detecting whether there is backward stimulated Brillouin scattering signal or not at different depth of laser converging.

The colloidal polymer electrolyte system consists of acrylate monomer and its derivative 100 (in weight portions, the same below) including that with functional group 0.4-10; electrolyte liquid 300-1900; initiator 0.2-4 and crosslinking agent 0-5. One of preparation process incldues mixing the components, liquid state filling, polymerizing in the cell chamber to form colloidal polymer electrolyte. The other preparation process includes polymerizing acrylate monomer and its derivative, dissolving the polymer in electrolyte liquid, adding crosslinking agent to mix homogeneously, filling into cell chamber and crosslinking inside the cell chamber to form colloidal polymer electrolyte. The present invention is easy to operate and high in safety, and the prepared electrolyte has excellent comprehensive performance.

Liquid lens cells are used in a variable power optical system. In one embodiment, a stop is located between a first lens group comprising at least a first liquid lens cell and a second lens group comprising at least a second liquid lens cell. In one embodiment, a liquid lens cell controls an incident angle of light rays on an image surface.

The invention discloses a liquid negative electrode glow discharge atomizer which comprises a metal positive electrode connected with a positive electrode of a high-voltage power supply, a graphite stick connected with a negative electrode of the high-voltage power supply, a liquid cell, a sample injection unit and a waste liquid discharging unit, wherein the graphite stick is fixed on the liquid cell; the sample injection unit comprises a sample injection pipe; the top end of the sample injection pipe is positioned deadly under the lower end of the metal positive electrode; a solution in the sample injection unit escapes from the top end of the sample injection pipe; the liquid discharging unit comprises a liquid discharging pipe; the top end of the liquid discharging pipe and the bottom of the liquid cell are positioned on the same horizontal plane.

A well has a pair of side surfaces, and one of the side surfaces is in contact with a compartment of a first channel with a gas-permeable membrane being interposed therebetween and the other side surface is in contact with a compartment of a second channel with a gas-permeable membrane being interposed therebetween. The well is filled with a liquid cell culture medium, and in such a state, a high-concentration gas and a low-concentration gas, which are different in the concentration of a specific component from each other, are allowed to flow through the first and second channels, respectively, to form a concentration distribution of the specific component in the well.

An electrochemical cell apparatus is disclosed where the cell has a chamber for containing an electrolyte. The chamber is situated between a bottom and a top substrate. One or more bottom windows are in the bottom substrate and one or more top windows are in the top substrate. Each window has a window cover facing the chamber. The top window and bottom window each have a portion in alignment so that an electron beam passes through both respective portions. A spacer is deposited between the top and bottom substrate and forming walls surrounding the chamber. Two or more electrodes, each having an interior portion that is within the chamber and electrically continuous with an exterior portion external to the chamber, are located on the chamber side of the bottom substrate.

The invention discloses a method for preserving and transporting immune cells and belongs to the technical field of biology. The method comprises the following steps of collecting peripheral blood or umbilical cord blood, and conducting dilution, so that cell suspension is obtained; adding a separating medium containing trehalose, ultra-low-viscosity sodium alginate and amino acid into a centrifuge tube, laying the cell suspension flat on the separating medium, conducting centrifugation, absorbing upper layer blood plasma for use, and absorbing albuginea layer cells, so that lymphocyte is obtained; mixing the lymphocyte with a cryopreservation solution in the same proportion, and placing the mixture into a cell cryopreservation tube; conducting cryopreservation; after the lymphocyte thaws, moving the liquid cell suspension into a centrifuge tube containing normal saline with the temperature ranging from 4 DEG C to 8 DEG C, mixing the mixture uniformly, and conducting centrifugation; adding preserving fluid containing trehalose with the concentration being 2% to the lymphocyte; moving the mixture into a sterile tube or a transfer bag for transfer. According to the method, raw materials meeting the intravenous injection level bulk pharmaceutical chemical standards are selected for all stages from separation to cryopreservation and then to preservation and transportation, uncertainty of the raw materials is low, and safety is high.

The current invention concerns a method for determining the presence of a (pre)cancerous cell in a liquid cell sample, comprising the steps of: —suspending and preserving a cell sample obtained from a subject in a sample vial comprising a liquid medium, said liquid medium comprises means for labeling cells or epitope(s) on or in said cells; —obtaining data from said labelled liquid cell sample; and —determining the presence of said (pre)cancerous cells based on said obtained data; characterized in that said data comprises morphological data and biomarker data. In a further aspect, the invention relates to a liquid medium for fixing, preserving and labeling cells in a cell sample and a sample vial specifically designed to be used in conjunction with the current method.

The invention is directed to a scanned probe microscope including one plate allowing for tip scanning and the other allowing for sample scanning, with the optical axis of the scanned probe microscope being free to permit incorporation into standard optical microscopes. The top plate can be hinged onto the bottom plate, or the top plate can simply be placed on the bottom plate and a rough approach is caused by a dc motor or other mechanism which will enable the two flat plate scanners to have a large z range. In another embodiment, the microscope includes three plates which allow sample scanning, tip scanning and two tips to be operational at the same time.

A microscope in accordance with the invention may use a liquid cell, may use a near-field optical element made of silicon cantilever technology, or may use an apertureless probe for apertureless near-field scanning optical microscopy.

The microscope may use a tuning fork for feedback in any combination of geometries of tip, sample and tuning fork and with or without gluing of the tip to the tuning fork and with control of tip attachment or near-attachment to the tuning fork. The control of tip attachment to the tuning fork may be based on near zero backlash movement technology, and the tuning fork can be used in non-contact, contact and intermittent contact modes of operation. A fiber based feedback system may use either straight or cantilevered fibers, and the detection of signals may be based on amplitude, phase, wavelength or other optical parameters that can be used to monitor the movement of an SPM sensor.