摘要:
Methods of producing nucleic acid arrays using an in situ nucleic acid synthesis protocol are provided, where the in situ nucleic acid synthesis protocol includes a plurality of cycles, each of which includes: (I) a monomer attachment step; and (II) a functional group generation step, the latter of which may include: (a) oxidation and (b) deblocking substeps, and optionally a capping substep. A feature of the subject methods is that, following deblock of the surface, the deblocking fluid is displaced or purged from the surface using a fluid of different density, e.g., an oxidization fluid or wash fluid. Also provided are the arrays produced using the subject methods, as well as methods for use of the arrays and kits that include the same.
摘要:
Methods of producing nucleic acid arrays using an in situ nucleic acid synthesis protocol are provided, where the in situ nucleic acid synthesis protocol includes a plurality of cycles, each of which includes: (I) a monomer attachment step; and (II) a functional group generation step, the latter of which may include: (a) oxidation and (b) deblocking substeps, and optionally a capping substep. A feature of the subject methods is that, following deblock of the surface, the deblocking fluid is displaced from the surface using a lower density wash fluid. Also provided are the arrays produced using the subject methods, as well as methods for use of the arrays and kits that include the same.
摘要:
Apparatus and methods are disclosed for controlling flow of fluid inside a chamber. A device comprises a chamber comprising at least one wall, a first opening for introducing a fluid into the interior of the chamber, and a second opening opposite the first opening. The at least one wall of the chamber is designed to provide a contracting section, a section having substantially constant cross-sectional area and a diffusing section through the chamber from the first opening to the second opening. The device may be employed as a gas outlet in a reaction chamber for conducting reactions where it is desired to control the internal atmosphere of the reaction chamber. The apparatus may be employed in the manufacture of biopolymers on the surface of a support such as an array of biopolymer features on the support. Also disclosed is a holding element for a support wherein the holding element is a low drag body.
摘要:
Apparatus and methods are disclosed for storing a plurality of supports having a plurality of chemical compounds bound to the surfaces of the supports. In the apparatus, a mechanism for diffusively introducing pressurized gas into the apparatus is in fluid communication with an outlet element comprising a plurality of openings. A holding chamber for the supports is in fluid communication with the outlet element. The outlet element and the holding chamber are disposed such that gas flow through the chamber is substantially uniform and unidirectional. The holding chamber comprises an opening sufficient to permit movement of the supports to and from the holding chamber and comprises a plurality of holding elements for holding the supports.
摘要:
A system for monitoring water concentration in gaseous sample is disclosed. It is readily applicable in the synthesis of biopolymer arrays/microarrays involving the use of water-sensitive reagents. A flow cell is provided in which a capacitance sensor is placed separate from a production or synthesis environment. Sample and dry gas may be provided to the flow cell via conduits and valves or a manifold system. Dry gas, such as N2, is used to dry the sensor or simply to maintain it in a dried condition. The same gas may be used to drive an optional venturi pump to draw sample for measurement into the cell from the synthesis environment.
摘要:
Methods and apparatus are disclosed for preparing an array of polymeric compounds on a substrate. Drops of polymer subunits are dispensed to a surface of a substrate from two or more drop dispensing modules wherein each module comprises dispensers for dispensing a respective polymer-forming reagent. At least two of the modules and a substrate are brought into drop dispensing relationship in at least one step prior to conducting the step of preparing the surface for repeating the drop-dispensing step. Next, the surface is subjected to reagents to prepare the surface for repeating the drop-dispensing step. The above steps are repeated for a sufficient number of cycles to prepare the array of polymeric compounds.
摘要:
Flow cell devices and methods for using the devices are disclosed. In one aspect, the flow cell devices are used to expose substrate surfaces comprising biopolymers or monomers to a desired fluid. Workstations are also provided including a flow cell device and one or more station(s) for processing a substrate, such as one or more of a printer, reaction chamber, wash chamber, and scanner. Computer program products for implementing functions of the devices and workstations and for performing the methods are also disclosed.
摘要:
A method, a system, and a computer-readable medium storing a program for determining array quality during in-situ manufacturing of an array includes determining an average feature coverage fraction of the array, determining a background area fraction of the array, measuring a contact angle of the background, and determining the array quality based upon the measured, feature contact angle.
摘要:
Methods of producing nucleic acid arrays using an in situ nucleic acid synthesis protocol are provided. Embodiments include a functional group generation step performed by flowing a plurality of different fluids across the surface of a substrate in a manner such that any given lower density fluid is always above any given higher density fluid of the plurality. Also provided are the arrays produced using the subject methods, methods for use of the arrays, and devices for use in practicing the subject methods.
摘要:
The invention provides methods for manufacturing a chemical array reader calibration device. Embodiments include dispensing a volume of fluorescent dye coating composition from a pulse jet fluid deposition device onto a surface of a substrate to coat the surface with the fluorescent dye coating composition. Also provided are chemical array reader calibration devices and methods of using the subject chemical array reader calibration devices to calibrate a chemical array reader. Also provided are kits that include a chemical array reader calibration device.