Devices and methods for de novo synthesis of large and highly accurate libraries of oligonucleic acids are provided herein. Devices include structures having a main channel and microchannels, where the microchannels have a high surface area to volume ratio. Devices disclosed herein provide for de novo synthesis of oligonucleic acids having a low error rate.

The present disclosure is directed to a device (100) comprising a sampling part (110), wherein the sampling part (110) comprises an array of capture zones (112) for sampling liquid volumes between tens of microliters and femtoliters, wherein some or all of the capture zones (112) contain a sponge-like material. Also disclosed are a method for the preparation of such a device and a method for the detection and determination of the presence, concentration and/or properties of an analyte by contacting a liquid sample with such a device.

Lateral loading methods of use in high-throughput methods for screening large populations of variant proteins are provided. The methods utilize a flow cell encompassing large-scale arrays of microcapillaries, where each microcapillary comprises a solution containing a variant protein, an immobilized target molecule, and a reporter element. Immobilized target molecules may include any molecule of interest, including proteins, nucleic acids, carbohydrates, and other biomolecules.

There is provided a method of charging an array of micro-capillaries. The micro-capillaries have at least one end that is open for fluid communication. The method includes the steps of: (a) filling the array of micro-capillaries with an assay liquid; (b) controllably evaporating at least some of the assay liquid to remove it from the micro-capillary and create a void space in each of the capillaries between the assay liquid and the open end; and (c) filling the void space with a liquid that is immiscible with said assay liquid. There is also provided a use of the disclosed method and a device for charging an array of micro-capillaries.

Provided is a sample support body that includes a substrate, an ionization substrate, and a support. The ionization substrate has a plurality of measurement regions for dropping a sample on a second surface. A plurality of through-holes that open in a first surface and the second surface are formed at least in the measurement regions of the ionization substrate. A conductive layer is provided on peripheral edges of the through-holes at least on the second surface. The support has a first support provided on peripheral edges of the measurement regions on the first surface to separate the plurality of measurement regions when viewed in the direction in which the substrate and the ionization substrate face each other.

Devices and methods for de novo synthesis of large and highly accurate libraries of oligonucleic acids are provided herein. Devices include structures having a main channel and microchannels, where the microchannels have a high surface area to volume ratio. Devices disclosed herein provide for de novo synthesis of oligonucleic acids having a low error rate.

Methods of loading a molecule of interest into a sample well are provided. In some aspects, methods of loading a molecule of interest into a sample well involve loading a molecule of interest into a sample well in the presence of a crowding agent and/or a condensing agent. In some aspects, methods of loading a sequencing template into a sample well are provided.

A blood sample collection and/or storage device includes a two-piece housing that encompasses a port at which a fingertip blood sample is collected. After the sample is taken, the two-piece housing is moved to a closed position to protect the sample for storage and optionally process the sample within the housing. The housing may also be opened to access the stored sample for further processing.

The present invention provides a sample extraction device, comprising an extraction table and an operating and moving module. The operating and moving module comprises a first horizontal movement module, a first vertical movement module, and a suction module. The suction module is provided on a supporting frame of the first horizontal movement module, and comprises a second vertical movement module and an injector, the second vertical movement module is configured to move vertically with respect to the extraction table, the injector has an airtight cylinder and a piston rod, and the airtight cylinder is connected to the gas delivery tube; wherein the second vertical movement module moves vertically to push or pull the airtight cylinder or the piston rod, in order for the injector to generate positive or negative pressure. The sample extraction device of the present invention can reduce the space required for operation substantially.

High-throughput methods for screening large populations of variant proteins are provided. The methods utilize large-scale arrays of microcapillaries, where each microcapillary comprises a solution containing a variant protein, an immobilized target molecule, and a reporter element. Immobilized target molecules may include any molecule of interest, including proteins, nucleic acids, carbohydrates, and other biomolecules. The association of a variant protein with a molecular target is assessed by measuring a signal from the reporter element. The contents of microcapillaries identified in the assays as containing variant proteins of interest can be isolated, and cells expressing the variant proteins of interest can be characterized. Also provided are systems for performing the disclosed screening methods.