Abstract: An example of a flow cell includes a substrate; a plurality of reactive regions spatially separated from one another across the substrate; and a plurality of independently removable coatings respectively positioned over each of the plurality of reactive regions. Each of the plurality of reactive regions includes a polymeric hydrogel layer; and a reactive entity attached to the polymeric hydrogel layer. At least one of the independently removable coatings is a gas-dissolvable coating.

Abstract: An example of a flow cell includes a substrate; a plurality of reactive regions spatially separated from one another across the substrate; and a plurality of independently removable coatings respectively positioned over each of the plurality of reactive regions. Each of the plurality of reactive regions includes a polymeric hydrogel layer; and a reactive entity attached to the polymeric hydrogel layer. At least one of the independently removable coatings is a composite that includes a thermo-responsive polymer and a photo-thermal additive.

Abstract: Materials and methods for preparing nucleic acid libraries for next-generation sequencing are described herein. A variety of approaches are described relating to the use of unique molecular identifiers with transposon-based technology in the preparation of sequencing libraries. Also described herein are sequencing materials and methods for identifying and correcting amplification and sequencing errors.

Abstract: An example of a flow cell includes a substrate having depressions separated by interstitial regions. First and second primers are immobilized within the depressions. First transposome complexes are immobilized within the depressions, and the first transposome complexes include a first amplification domain. Second transposome complexes are also immobilized within the depressions, and the second transposome complexes include a second amplification domain. Some of the first transposome complexes, or some of the second transposome complexes, or some of both of the first and second transposome complexes include a modification to reduce tagmentation efficiency.

Abstract: A variety of different types of targeted transposome complexes are described herein that may be used to mediate sequence-specific targeted transposition of nucleic acids.

Abstract: In the examples set forth herein, nucleic acid extraction materials are capable of selectively extracting cell free nucleic acids, including cell free DNA, directly from whole blood samples or plasma. Also included are methods of making and using the nucleic acid extraction materials. One example of a nucleic acid extraction material includes a substrate. This example of the nucleic acid extraction material also includes a polycation bonded to at least a portion of a surface of the substrate. In this example, the polycation consists of a polymer of a quaternized monomer selected from the group consisting of a quaternized 1-vinylimidazole monomer and a quaternized dimethylaminoethyl methacrylate monomer, or a copolymer of a neutral monomer and the quaternized monomer.

Abstract: It is an object of the present invention to achieve rapid surface patterning of biomolecules within microfluidic devices with high reproducibility. In this work, we present a new means of creating micro- and nano-patterns of aminosilanes within microfluidic devices via an aqueous based microcontact printing technique. To minimize the diffusion of molecules into the PDMS stamp, we use water as the inking solvent and enforce short incubation and contact times during the printing process to preserve the pre-defined resolution of patterned features. These patterns then serve as the building block to couple multiple biomolecules in solution onto a single surface for subsequent bioassays.

Abstract: An example of a nucleic acid extraction material includes a substrate. The nucleic acid extraction material also includes a polycation bonded to at least a portion of a surface of the substrate. The polycation consists of a polymer of a quaternized monomer selected from the group consisting of a quaternized 1-vinylimidazole monomer and a quaternized dimethylaminoethyl methacrylate monomer, or a copolymer of a neutral monomer and the quaternized monomer.

Abstract: It is an object of the present invention to achieve rapid surface patterning of biomolecules within microfluidic devices with high reproducibility. In this work, we present a new means of creating micro- and nano-patterns of aminosilanes within microfluidic devices via an aqueous based microcontact printing technique. To minimize the diffusion of molecules into the PDMS stamp, we use water as the inking solvent and enforce short incubation and contact times during the printing process to preserve the predefined resolution of patterned features. These patterns then serve as the building block to couple multiple biomolecules in solution onto a single surface for subsequent bioassays.