Abstract: An example of a kit includes a flow cell assembly. The flow cell assembly includes a reaction chamber, a temperature controlled flow channel in selective fluid communication with an inlet of the reaction chamber, and a filter positioned in the temperature controlled flow channel. The reaction chamber includes depressions separated by interstitial regions and capture primers attached within each of the depressions. The filter is i) to block concentrated biological sample-polymer complexes generated in the temperature controlled flow channel at a first temperature, and ii) to allow passage of concentrated biological sample and polymer released from the complexes in the temperature controlled flow channel at a second temperature.

Abstract: In an example method, a grafting solution is applied to a patterned substrate using a liquid-phase thin-film deposition technique. The patterned substrate includes a lane surrounded by, or a plurality of depressions separated by interstitial regions; and a polymer in the lane or in each of the plurality of depressions. The polymer is functionalized with a first click reaction moiety. The grafting solution includes a solvent; a polymer matrix material dissolved in the solvent; and primers of a primer set dissolved in the solvent, each of the primers being terminated with a second click reaction moiety. The applied grafting solution is dried. During drying, a solid polymer matrix is formed and at least some of the primers attach to the polymer i) via the first and second click reaction moieties and ii) in at least a portion of the lane or in at least some of the plurality of depressions.

Abstract: An example of an array includes a support, a cross-linked epoxy polyhedral oligomeric silsesquioxane (POSS) resin film on a surface of the support, and a patterned hydrophobic polymer layer on the cross-linked epoxy POSS resin film. The patterned hydrophobic polymer layer defines exposed discrete areas of the cross-linked epoxy POSS resin film, and a polymer coating is attached to the exposed discrete areas. Another example of an array includes a support, a modified epoxy POSS resin film on a surface of the support, and a patterned hydrophobic polymer layer on the modified epoxy POSS resin film. The modified epoxy POSS resin film includes a polymer growth initiation site, and the patterned hydrophobic polymer layer defines exposed discrete areas of the modified epoxy POSS resin film. A polymer brush is attached to the polymer growth initiation site in the exposed discrete areas.

Abstract: An example of a kit includes a flow cell assembly. The flow cell assembly includes a reaction chamber, a temperature controlled flow channel in selective fluid communication with an inlet of the reaction chamber, and a filter positioned in the temperature controlled flow channel. The reaction chamber includes depressions separated by interstitial regions and capture primers attached within each of the depressions. The filter is i) to block concentrated biological sample-polymer complexes generated in the temperature controlled flow channel at a first temperature, and ii) to allow passage of concentrated biological sample and polymer released from the complexes in the temperature controlled flow channel at a second temperature.

Abstract: An example of an array includes a support, a cross-linked epoxy polyhedral oligomeric silsesquioxane (POSS) resin film on a surface of the support, and a patterned hydrophobic polymer layer on the cross-linked epoxy POSS resin film. The patterned hydrophobic polymer layer defines exposed discrete areas of the cross-linked epoxy POSS resin film, and a polymer coating is attached to the exposed discrete areas. Another example of an array includes a support, a modified epoxy POSS resin film on a surface of the support, and a patterned hydrophobic polymer layer on the modified epoxy POSS resin film. The modified epoxy POSS resin film includes a polymer growth initiation site, and the patterned hydrophobic polymer layer defines exposed discrete areas of the modified epoxy POSS resin film. A polymer brush is attached to the polymer growth initiation site in the exposed discrete areas.

Abstract: A flow cell package includes first and second surface-modified patterned wafers and a spacer layer. The first surface-modified patterned wafer includes first depressions separated by first interstitial regions, a first functionalized molecule bound to a first silane or silane derivative in at least some of the first depressions, and a first primer grafted to the first functionalized molecule in the at least some of the first depressions. The second surface-modified patterned wafer includes second depressions separated by second interstitial regions, a second functionalized molecule bound to a second silane or silane derivative in at least some of the second depressions, and a second primer grafted to the second functionalized molecule in the at least some of the second depressions. The spacer layer bonds at least some first interstitial regions to at least some second interstitial regions, and at least partially defines respective fluidic chambers of the flow cell package.

Abstract: A flow cell includes a substrate and a copolymer coating. The copolymer coating includes copolymer chains, each having recurring units of formula (I): and formula (II):. In formula (I), R1 is —H, a halogen, an alkyl, an alkoxy, an alkenyl, an alkynyl, a cycloalkyl, an aryl, a heteroaryl, a heterocycle, or optionally substituted variants thereof; R2 is an azido; each (CH2)p can be optionally substituted; and p is an integer from 1 to 50. In formula (II), each of R3, R3?, R4, R4? is —H, R5, —OR5, —C(O)OR5, —C(O)R5, —OC(O)R5, —C(O)NR6R7, or —NR6R7; R5 is —H, —OH, an alkyl, a cycloalkyl, a hydroxyalkyl, an aryl, a heteroaryl, a heterocycle, or optionally substituted variants thereof; and each of R6 and R7 is —H or an alkyl. Some copolymer chains include at least one alkoxyamine end group.

Abstract: An example of a method includes providing a substrate with an exposed surface comprising a first chemical group, wherein the providing optionally comprises modifying the exposed surface of the substrate to incorporate the first chemical group; reacting the first chemical group with a first reactive group of a functionalized polymer molecule to form a functionalized polymer coating layer covalently bound to the exposed surface of the substrate; grafting a primer to the functionalized polymer coating layer by reacting the primer with a second reactive group of the functionalized polymer coating layer; and forming a water-soluble protective coating on the primer and the functionalized polymer coating layer. Examples of flow cells incorporating examples of the water-soluble protective coating are also disclosed herein.

Abstract: An example of a method includes providing a substrate with an exposed surface comprising a first chemical group, wherein the providing optionally comprises modifying the exposed surface of the substrate to incorporate the first chemical group; reacting the first chemical group with a first reactive group of a functionalized polymer molecule to form a functionalized polymer coating layer covalently bound to the exposed surface of the substrate; grafting a primer to the functionalized polymer coating layer by reacting the primer with a second reactive group of the functionalized polymer coating layer; and forming a water-soluble protective coating on the primer and the functionalized polymer coating layer. Examples of flow cells incorporating examples of the water-soluble protective coating are also disclosed herein.

Abstract: An example of an array includes a support, a cross-linked epoxy polyhedral oligomeric silsesquioxane (POSS) resin film on a surface of the support, and a patterned hydrophobic polymer layer on the cross-linked epoxy POSS resin film. The patterned hydrophobic polymer layer defines exposed discrete areas of the cross-linked epoxy POSS resin film, and a polymer coating is attached to the exposed discrete areas. Another example of an array includes a support, a modified epoxy POSS resin film on a surface of the support, and a patterned hydrophobic polymer layer on the modified epoxy POSS resin film. The modified epoxy POSS resin film includes a polymer growth initiation site, and the patterned hydrophobic polymer layer defines exposed discrete areas of the modified epoxy POSS resin film. A polymer brush is attached to the polymer growth initiation site in the exposed discrete areas.

Abstract: An example of an array includes a support, a cross-linked epoxy polyhedral oligomeric silsesquioxane (POSS) resin film on a surface of the support, and a patterned hydrophobic polymer layer on the cross-linked epoxy POSS resin film. The patterned hydrophobic polymer layer defines exposed discrete areas of the cross-linked epoxy POSS resin film, and a polymer coating is attached to the exposed discrete areas. Another example of an array includes a support, a modified epoxy POSS resin film on a surface of the support, and a patterned hydrophobic polymer layer on the modified epoxy POSS resin film. The modified epoxy POSS resin film includes a polymer growth initiation site, and the patterned hydrophobic polymer layer defines exposed discrete areas of the modified epoxy POSS resin film. A polymer brush is attached to the polymer growth initiation site in the exposed discrete areas.

Abstract: An example of a kit includes a flow cell assembly. The flow cell assembly includes a reaction chamber, a temperature controlled flow channel in selective fluid communication with an inlet of the reaction chamber, and a filter positioned in the temperature controlled flow channel. The reaction chamber includes depressions separated by interstitial regions and capture primers attached within each of the depressions. The filter is i) to block concentrated biological sample-polymer complexes generated in the temperature controlled flow channel at a first temperature, and ii) to allow passage of concentrated biological sample and polymer released from the complexes in the temperature controlled flow channel at a second temperature.

Abstract: A flow cell package includes first and second surface-modified patterned wafers and a spacer layer. The first surface-modified patterned wafer includes first depressions separated by first interstitial regions, a first functionalized molecule bound to a first silane or silane derivative in at least some of the first depressions, and a first primer grafted to the first functionalized molecule in the at least some of the first depressions. The second surface-modified patterned wafer includes second depressions separated by second interstitial regions, a second functionalized molecule bound to a second silane or silane derivative in at least some of the second depressions, and a second primer grafted to the second functionalized molecule in the at least some of the second depressions. The spacer layer bonds at least some first interstitial regions to at least some second interstitial regions, and at least partially defines respective fluidic chambers of the flow cell package.

Abstract: Presented are methods and compositions for spatial detection and analysis of nucleic acids in a tissue sample. The methods can enable the characterization of transcriptomes and/or genomic variations in tissues while preserving spatial information about the tissue.

Abstract: A flow cell package includes first and second surface-modified patterned wafers and a spacer layer. The first surface-modified patterned wafer includes first depressions separated by first interstitial regions, a first functionalized molecule bound to a first silane or silane derivative in at least some of the first depressions, and a first primer grafted to the first functionalized molecule in the at least some of the first depressions. The second surface-modified patterned wafer includes second depressions separated by second interstitial regions, a second functionalized molecule bound to a second silane or silane derivative in at least some of the second depressions, and a second primer grafted to the second functionalized molecule in the at least some of the second depressions. The spacer layer bonds at least some first interstitial regions to at least some second interstitial regions, and at least partially defines respective fluidic chambers of the flow cell package.

Abstract: Presented are methods and compositions for spatial detection and analysis of nucleic acids in a tissue sample. The methods can enable the characterization of transcriptomes and/or genomic variations in tissues while preserving spatial information about the tissue.

Abstract: Embodiments of present application are directed to microfluidic devices and particularly digital micro-plastic fluidic devices that are specifically designed to prevent sample contamination during sample processing, methods of manufacturing the same, and methods to improve sample analysis process by preventing sample contamination.

Abstract: Embodiments of present application are directed to microfluidic devices and particularly digital micro-plastic fluidic devices that are specifically designed to prevent sample contamination during sample processing, methods of manufacturing the same, and methods to improve sample analysis process by preventing sample contamination.

Abstract: An example of a method includes providing a substrate with an exposed surface comprising a first chemical group, wherein the providing optionally comprises modifying the exposed surface of the substrate to incorporate the first chemical group; reacting the first chemical group with a first reactive group of a functionalized polymer molecule to form a functionalized polymer coating layer covalently bound to the exposed surface of the substrate; grafting a primer to the functionalized polymer coating layer by reacting the primer with a second reactive group of the functionalized polymer coating layer; and forming a water-soluble protective coating on the primer and the functionalized polymer coating layer. Examples of flow cells incorporating examples of the water-soluble protective coating are also disclosed herein.

Abstract: Presented are methods and compositions for spatial detection and analysis of nucleic acids in a tissue sample. The methods can enable the characterization of transcriptomes and/or genomic variations in tissues while preserving spatial information about the tissue.