Methods and compositions are disclosed relating to the localization of nucleic acids to arrays such as silane-free arrays, and of sequencing the nucleic acids localized thereby.

In an example of the method, a functionalized coating layer is applied in depressions of a patterned flow cell substrate. The depressions are separated by interstitial regions. A primer is grafted to the functionalized coating layer to form a grafted functionalized coating layer in the depressions. A hydrogel is applied on at least the grafted functionalized coating layer.

In an example of the method, a functionalized coating layer is applied in depressions of a patterned flow cell substrate. The depressions are separated by interstitial regions. A primer is grafted to the functionalized coating layer to form a grafted functionalized coating layer in the depressions. A hydrogel is applied on at least the grafted functionalized coating layer.

Methods of producing substrates having selected active chemical regions by employing elements of the substrates in assisting the localization of active chemical groups in desired regions of the substrate. The methods may include optical, chemical and/or mechanical processes for the deposition, removal, activation and/or deactivation of chemical groups in selected regions of the substrate to provide selective active regions of the substrate.

Described are a combinatorial library of DNA molecules that can induce shape changes within specific regions of hydrogels up to centimeter scales. The DNA molecules include polymerizing hairpins, terminating hairpins, reversal strands, and crosslink nucleic acid sequences.

The present disclosure provides a fabrication process that results in creating large arrays of living cells, such as stem cells, which are subsequently exposed to nanoliter quantities of compounds to test the efficacy on cellular metabolism.

A method of synthesizing an oligonucleotide using a nanofluidic device including a plurality of nanopore channels, a plurality of electrodes, and an electrolyte solution, includes coupling a primer to an inner wall of a nanopore channel of the plurality of nanopore channels, the primer having a protecting group. The method also includes applying a voltage to an electrode of the plurality of electrodes that corresponds to the nanopore channel to produce an acid from the electrolyte solution at the electrode. The electrode includes an anode and a cathode disposed at opposite sides of the nanopore channel. The method further includes the acid removing the protecting group from the primer. Moreover, the method includes coupling a nucleotide to the primer with the protecting group removed to form an intermediate product. In addition, the method includes repeating the steps on the intermediate product until the oligonucleotide is synthesized.

There is disclosed a process for in vitro synthesis and assembly of long, gene-length polynucleotides based upon assembly of multiple shorter oligonucleotides synthesized in situ on a microarray platform. Specifically, there is disclosed a process for in situ synthesis of oligonucleotide fragments on a solid phase microarray platform and subsequent, on device assembly of larger polynucleotides composed of a plurality of shorter oligonucleotide fragments.

Methods and compositions are disclosed relating to the localization of nucleic acids to arrays such as silane-free arrays, and of sequencing the nucleic acids localized thereby.

There is disclosed a process for in vitro synthesis and assembly of long, gene-length polynucleotides based upon assembly of multiple shorter oligonucleotides synthesized in situ on a microarray platform. Specifically, there is disclosed a process for in situ synthesis of oligonucleotide fragments on a solid phase microarray platform and subsequent, on device assembly of larger polynucleotides composed of a plurality of shorter oligonucleotide fragments.