Presented are methods and compositions for using immobilized transposase and a transposon end for generating an immobilized library of 5′-tagged double-stranded target DNA on a surface. The methods are useful for generating 5′- and 3′-tagged DNA fragments for use in a variety of processes, including massively parallel DNA sequencing.

Presented are methods and compositions for using immobilized transposase and a transposon end for generating an immobilized library of 5′-tagged double-stranded target DNA on a surface. The methods are useful for generating 5′- and 3′-tagged DNA fragments for use in a variety of processes, including massively parallel DNA sequencing.

Provided are a vesicular adaptor and a single-chain cyclic library constructed by using the adaptor. The library can be used for RNA sequencing and other sequencing platforms dependent on a single-stranded cyclic library, and has the advantage of high throughput sequencing, high accuracy and simple operations.

Provided are a vesicular adaptor and a single-chain cyclic library constructed by using the adaptor. The library can be used for RNA sequencing and other sequencing platforms dependent on a single-stranded cyclic library, and has the advantage of high throughput sequencing, high accuracy and simple operations.

A high-throughput combinatorial materials experimental apparatus for in-situ synthesis and real-time characterization includes a composition spread device to prepare continuous or discrete composition distribution as precursor of the high-throughput experimental samples library, a low temperature diffusion mixing device to thoroughly mix the composition spread in the thickness direction through diffusion at a relatively low temperature to form an amorphous precursor, and an integrated synthesis-characterization unit for heat treatment of the material library precursor in either a parallel or point-by-point scanning mode at different thermodynamic conditions for phase formation and to characterize features or properties of the materials of interest in an in-situ and real-time manner. The integrated synthesis-characterization unit includes a chamber maintained at desired vacuum and atmosphere, a micro-heating source, an excitation source, a signal collector, and a sample holder.

A high-throughput combinatorial materials experimental apparatus for in-situ synthesis and real-time characterization includes a composition spread device to prepare continuous or discrete composition distribution as precursor of the high-throughput experimental samples library, a low temperature diffusion mixing device to thoroughly mix the composition spread in the thickness direction through diffusion at a relatively low temperature to form an amorphous precursor, and an integrated synthesis-characterization unit for heat treatment of the material library precursor in either a parallel or point-by-point scanning mode at different thermodynamic conditions for phase formation and to characterize features or properties of the materials of interest in an in-situ and real-time manner. The integrated synthesis-characterization unit includes a chamber maintained at desired vacuum and atmosphere, a micro-heating source, an excitation source, a signal collector, and a sample holder.

Disclosed herein are methods for the generation of nucleic acid libraries encoding for gRNA sequences. The gRNAs encoded by methods described herein may be single or double gRNA sequences. Methods described provide for the generation of gRNA libraries, as a DNA precursor or as a RNA transcription product, with improved accuracy and uniformity.

Disclosed herein are methods for the generation of nucleic acid libraries encoding for gRNA sequences. The gRNAs encoded by methods described herein may be single or double gRNA sequences. Methods described provide for the generation of gRNA libraries, as a DNA precursor or as a RNA transcription product, with improved accuracy and uniformity.

Provided herein are compositions, devices, systems and methods for generation and use of biomolecule-based information for storage. Further provided are devices-having addressable electrodes controlling polynucleotide synthesis (deprotection, extension, or cleavage, etc.) The compositions, devices, systems and methods described herein provide improved storage, density, and retrieval of biomolecule-based information.

This application provides a bead with a covalently attached chemical compound and a covalently attached DNA barcode and methods for using such beads. The bead has many substantially identical copies of the chemical compound and many substantially identical copies of the DNA barcode. The compound consists of one or more chemical monomers, where the DNA barcode takes the form of barcode modules, where each module corresponds to and allows identification of a corresponding chemical monomer. The nucleic acid barcode can have a concatenated structure or an orthogonal structure. Provided are method for sequencing the bead-bound nucleic acid barcode, for cleaving the compound from the bead, and for assessing biological activity of the released compound.