摘要:
The invention features methods of making devices, or “platens”, having a high-density array of through-holes, as well as methods of cleaning and refurbishing the surfaces of the platens. The invention further features methods of making high-density arrays of chemical, biochemical, and biological compounds, having many advantages over conventional, lower-density arrays. The invention includes methods by which many physical, chemical or biological transformations can be implemented in serial or in parallel within each addressable through-hole of the devices. Additionally, the invention includes methods of analyzing the contents of the array, including assaying of physical properties of the samples.
摘要:
A method and an array filling system for loading a plurality of disparate sample containers, the sample containers comprising an integral structure. Each receptacle is characterized by a hydrophilic surface, and the receptacles are separated by a hydrophobic surface. The system has a liquid transfer device capable of holding liquid and adapted for motion to cause sequential communication of liquid held in the liquid transfer device with successive receptacles of the array by dragging the liquid across the hydrophobic surface.
摘要:
A multi-port liquid bridge (1) adds aqueous phase droplets (10) in an enveloping oil phase carrier liquid (11) to a draft channel (4, 6). A chamber (3) links four ports, and it is permanently full of oil (11) when in use. Oil phase is fed in a draft flow from an inlet port (4) and exits through a draft exit port (6) and a compensating flow port (7). The oil carrier and the sample droplets (3) (“aqueous phase”) flow through the inlet port (5) with an equivalent fluid flow subtracted through the compensating port (7). The ports of the bridge (1) are formed by the ends of capillaries held in position in plastics housings. The phases are density matched to create an environment where gravitational forces are negligible. This results in droplets (10) adopting spherical forms when suspended from capillary tube tips. Furthermore, the equality of mass flow is equal to the equality of volume flow. The phase of the inlet flow (from the droplet inlet port (5) and the draft inlet port (4) is used to determine the outlet port (6) flow phase.
摘要:
A method and an array filling system for loading a plurality of disparate sample containers, the sample containers comprising an integral structure. Each receptacle is characterized by a hydrophilic surface, and the receptacles are separated by a hydrophobic surface. The system has a liquid transfer device capable of holding liquid and adapted for motion to cause sequential communication of liquid held in the liquid transfer device with successive receptacles of the array by dragging the liquid across the hydrophobic surface.
摘要:
A method of developing a new coating having a desired performance characteristic with regard to a property of a coating is provided. The method includes the steps of: a) providing an array of coating wells, each well configured for receiving a coating material having a known parameter; b) placing a coating material having the known parameter in each coating well, varying the parameter so as to provide a plurality of coating material having different parameter values in a plurality of coating wells; c) correlating the value of the parameter for the coatings deposited in each of the plurality of coating wells with the position of the coating well in the array, whereby a parameter value is associated with each coating well position in the array; d) applying a coating leveling force to the array of coating wells to level the coating material in the coating wells; e) testing the coatings in the array to analyze the relationship between the position in the array and performance with regard to the property of the coating material, whereby the value of the parameter can be correlated to the performance of the coating with regard to the property of the coating. Optionally, the coatings in the array may be dried while the leveling force is applied. The above combinatorial, high-throughput method of screening candidate coat materials results in a substantial increase in the discovery rate of new coating materials. The moisture barrier characteristics of a film may be determined by providing a vapor sensitive color changing layer, with the film to be measured overlying the vapor sensitive layer, exposing the film to the vapor, and subsequently measuring the color changes.
摘要:
System and method for providing a sample preparing arrangement (10) submergible in a liquid medium that includes a carrier structure (11) having at least one cavity (12) therein and that is in communication with an arrangement (13) for controllable generation of a magnetic field through influence of a control signal. The sample preparing arrangement includes a magnetic covering structure (14) for covering and/or uncovering the cavity in operative interaction with the magnetic field.
摘要:
The present invention is drawn to the generation of micropatterns of biomolecules and cells on standard laboratory materials through selective ablation of a physisorbed biomolecule with oxygen plasma. In certain embodiments, oxygen plasma is able to ablate selectively physisorbed layers of biomolecules (e.g., type-I collagen, fibronectin, laminin, and Matrigel) along complex non-linear paths which are difficult or impossible to pattern using alternative methods. In addition, certain embodiments of the present invention relate to the micropatterning of multiple cell types on curved surfaces, multiwell plates, and flat bottom flasks. The invention also features kits for use with the subject methods.
摘要:
A system for automated high-pressure synthesis and more particularly a high-pressure reactor assembly comprises a reaction block and a pressure manifold for the introduction of pressure to the reaction wells of a reaction block. The reactor includes one or more pressure resistant reaction wells or vessels disposed in the reaction block.
摘要:
An electrochemical apparatus 1 permits electric-field-assisted fluidic assembly of objects 2 on a patterned silicon substrate 11 by means of electrical addressing. Charged objects 2 such as beads and live cells are moved electrokinetically, like as in electrophoresis, through a solution, typically water 3, towards a micro-patterned charged semiconductor electrode, such as a silicon electrode 11 patterned with silicon dioxide, silicon nitride or agarose gel. The charged objects 2 are thus localized to and assembled, most typically into arrays of multiple or single particles, in accordance with the patterning of the electrode 11. Correlating with theoretical predictions, negatively charged polystyrene beads of 20 μm diameter, or live mammalian cells of 20-30 μm diameter, can be assembled and disassembled on 100 μm feature size micro-patterned substrates by means of electrical addressing. The apparatus 1 has applications in creation of active cellular arrays for cell biology research, drug discovery and tissue engineering.
摘要:
Systems and methods are described that allow the high-throughput preparation, processing, and study of arrays of samples, each of which comprises at least one compound. Particular embodiments of the invention allow a large number of experiments to be performed in parallel on samples that comprised of one or more compounds on the milligram or microgram quantities of compounds. Other embodiments of the invention encompass methods and devices for the rapid screening of the results of such experiments, as well as methods and devices for rapidly determining whether or not similarities exist among groups of samples in an array. Particular embodiments of the invention encompass methods and devices for the high-throughput preparation of different forms of compounds (e.g., different crystalline forms), for the discovery of new forms of old compounds, and for the discovery of new methods of producing such forms. Embodiments of the invention also allow for the high-throughput determination of how specific compounds or forms of compounds behave when exposed to other chemicals or environmental conditions.