Abstract: A method for making on-flow cell three-dimensional polymer structures includes loading a polymer precursor solution onto a flow cell. The polymer precursor solution includes a monomer, a crosslinker, and a photoinitiator. The flow cell includes at least one channel for receiving the polymer precursor solution. The at least one channel has an upper interior surface and a lower interior surface. The method further includes illuminating the polymer precursor solution through a patterned photomask using a light at a wavelength sufficient to activate the photoinitiator. Activation of the photoinitiator polymerizes at least some of the polymer precursor solution underneath apertures in the patterned photomask and forms three-dimensional polymer structures that extend from the upper interior surface to the lower interior surface of the at least one channel.

Abstract: In an example, a target material is immobilized on two opposed sequencing surfaces of a flow cell using first and second fluids. The first fluid has a density less than a target material density and the second fluid has a density greater than the target material density; or the second fluid has a density less than the target material density and the first fluid has a density greater than the target material density. The first fluid (including the target material) is introduced into the flow cell, whereby at least some of the target material becomes immobilized by capture sites on one of the sequencing surfaces. The first fluid and non-immobilized target material are removed. The second fluid (including target material) is introduced into the flow cell, whereby at least some of the target material becomes immobilized by capture sites on another of the sequencing surfaces.

Abstract: A flow cell includes a support and a heteropolymer attached to the support. The heteropolymer includes an acrylamide monomer including an attachment group to react with a functional group attached to a primer, and a monomer including a stimuli-responsive functional group. The monomer including the stimuli-responsive functional group may be pH-responsive, temperature-responsive, saccharide-responsive, nucleophile-responsive, and/or salt-responsive.

Abstract: In an example, a target material is immobilized on two opposed sequencing surfaces of a flow cell using first and second fluids. The first fluid has a density less than a target material density and the second fluid has a density greater than the target material density; or the second fluid has a density less than the target material density and the first fluid has a density greater than the target material density. The first fluid (including the target material) is introduced into the flow cell, whereby at least some of the target material becomes immobilized by capture sites on one of the sequencing surfaces. The first fluid and non-immobilized target material are removed. The second fluid (including target material) is introduced into the flow cell, whereby at least some of the target material becomes immobilized by capture sites on another of the sequencing surfaces.

Abstract: Embodiments of the present disclosure relate to methods of capturing library DNA complexes to the patterned surface of the solid support for sequencing. The methods described herein improve the monoclonality of clusters and sequencing data quality and read length.

Abstract: A flow cell includes a support and a heteropolymer attached to the support. The heteropolymer includes an acrylamide monomer including an attachment group to react with a functional group attached to a primer, and a monomer including a stimuli-responsive functional group. The monomer including the stimuli-responsive functional group may be pH-responsive, temperature-responsive, saccharide-responsive, nucleophile-responsive, and/or salt-responsive.

Abstract: In some examples, a hybrid particle for use in capturing a polynucleotide may include a scaffold molecule including a seeding primer and a plurality of first moieties, and a nanoparticle including a plurality of second moieties. The scaffold molecule is coupled to the nanoparticle via interactions between the plurality of first moieties and the plurality of second moieties.

Abstract: An example of a flow cell includes a substrate, a plurality of chambers defined on or in the substrate, and a plurality of depressions defined in the substrate and within a perimeter of each of the plurality of chambers. The depressions are separated by interstitial regions. Primers are attached within each of the plurality of depressions, and a capture site is located within each of the plurality of chambers.

Abstract: An example primer set includes first and second nuclease resistant primers. The first nuclease resistant primer includes a first sequence; a first cleavage site attached at a 3? end of the first sequence; and a first nuclease resistant modification incorporated between the first sequence and the first cleavage site. The second nuclease resistant primer includes a second sequence that is different from the first sequence; a second nuclease resistant modification incorporated at a 3? end of the second sequence; and a second cleavage site attached between the second sequence and the second nuclease resistant modification. The second cleavage site is different from the first cleavage site.

Abstract: The present disclosure is generally directed to strategies for spatial multiomics via target nucleic acid capture and amplification.

Abstract: An example of a flow cell includes a substrate, a plurality of chambers defined on or in the substrate, and a plurality of depressions defined in the substrate and within a perimeter of each of the plurality of chambers. The depressions are separated by interstitial regions. Primers are attached within each of the plurality of depressions, and a capture site is located within each of the plurality of chambers.

Abstract: An example of a functionalized plasmonic nanostructure includes a plasmonic nanostructure core; a polymeric hydrogel attached to the plasmonic nanostructure core, the polymeric hydrogel having a thickness ranging from about 10 nm to about 200 nm; and a plurality of primers attached to side chains or arms of the polymeric hydrogel, wherein at least some of the plurality of primers are attached to the polymeric hydrogel at different distances from the plasmonic nanostructure core.

Abstract: In some examples, a structure is contacted with polynucleotides having a variety of lengths and each including first and second adapters. The structure includes a substrate including first and second regions spaced apart from one another by a gap of at least 100 nm, a first set of capture primers coupled to the first region of the substrate, and a second set of capture primers coupled to the second region of the substrate. The first adapter of the polynucleotide is hybridized to a capture primer of the first set of capture primers. Based on that polynucleotide being sufficiently long to bridge the gap, it is amplified using the first and second sets of capture primers. Based upon that polynucleotide being insufficiently long to bridge the gap, it is not amplified. Optionally, a wall may be disposed in the gap.

Abstract: The present disclosure is directed to decoupling library capture (template seeding) from cluster generation to optimise both processes. This is achieved by introducing orthogonality between the seeding and clustering primer.

Abstract: The present disclosure is generally directed to strategies for template capture and amplification during sequencing.

Abstract: An example of a nucleic acid sequencing component includes a support. A glycolipid bi-layer is attached to at least a portion of the support. First and second primers are respectively attached to the glycolipid bi-layer. In one example, the support is a substrate of a flow cell. In another example, the support is a core nanostructure that can be introduced into a flow cell.

Abstract: A composition for capturing target polynucleotides at a surface of a substrate is provided. The composition may include a plurality of capture primers coupled to the surface of the substrate and including modified nucleic acids; and a plurality of orthogonal capture primers coupled to the surface of the substrate and including modified nucleic acids. The modified nucleic acids of the capture primers may include locked nucleic acid (LNA), peptide nucleic acid (PNA), or super T. The modified nucleic acids of the orthogonal capture primers may include locked nucleic acid (LNA), peptide nucleic acid (PNA), or super T.

Abstract: A co-polymer includes a plurality of a first monomer including a terminal functional group that is to attach to at least two different primers; a plurality of a second monomer including a second functional group that is different from the terminal functional group, and that is selected from the group consisting of a phenyl group, methoxy propyl, glycosyl, vinyl pyrrolidone, and an imidazole group; and a plurality of a third monomer that is different from the first and second monomers. This co-polymer may be used in a flow cell, and may enhance the clustering efficiency and kinetics.

Abstract: A flow cell includes a support and a heteropolymer attached to the support. The heteropolymer includes an acrylamide monomer including an attachment group to react with a functional group attached to a primer, and a monomer including a stimuli-responsive functional group. The monomer including the stimuli-responsive functional group may be pH-responsive, temperature-responsive, saccharide-responsive, nucleophile-responsive, and/or salt-responsive.

Abstract: An example of a flow cell includes a substrate, a plurality of chambers defined on or in the substrate, and a plurality of depressions defined in the substrate and within a perimeter of each of the plurality of chambers. The depressions are separated by interstitial regions. Primers are attached within each of the plurality of depressions, and a capture site is located within each of the plurality of chambers.