An objective lens is used for DNA sequencing. An example system includes a flow cell, the objective lens, and a camera. Light from the flow cell is imaged by the camera through the objective lens. The objective lens can provide a long working distance; a flat field curvature; a high numerical aperture; and/or a wide field of view.

The present disclosure relates to methods and systems for partition-free quantification of molecules. The methods and systems provided allow a sample to be amplified such that discrete amplification spots can be analyzed to quantify the number of molecules without requiring physical partitions in order to separate the amplification spots.

The present disclosure relates to methods and systems for partition-free quantification of molecules. The methods and systems provided allow a sample to be amplified such that discrete amplification spots can be analyzed to quantify the number of molecules without requiring physical partitions in order to separate the amplification spots.

A multiplexed polymerase chain reaction (PCR) DNA detection system and a method for DNA detection within the PCR system are provided. The PCR DNA detection system includes a color charge-coupled device (CCD) camera, fluorophore-quencher probes and an imaging chamber. The fluorophore-quencher probes are selected in response to fluorophores quenched by the fluorophore-quencher probes corresponding to three selected primary colors and peak channel responses of the CCD camera such that emission profiles of the fluorophores substantially match the three selected primary colors and peak emission profiles of the fluorophores correspond to the peak RGB channel responses of the CCD camera. A DNA sample and the fluorophore-quencher probes are located within the imaging chamber. The color CCD camera is focused on the imaging chamber for simultaneous detection of up to three targets from fluorescence of the DNA sample and the fluorophore-quencher probes.

A multiplexed polymerase chain reaction (PCR) DNA detection system and a method for DNA detection within the PCR system are provided. The PCR DNA detection system includes a color charge-coupled device (CCD) camera, fluorophore-quencher probes and an imaging chamber. The fluorophore-quencher probes are selected in response to fluorophores quenched by the fluorophore-quencher probes corresponding to three selected primary colors and peak channel responses of the CCD camera such that emission profiles of the fluorophores substantially match the three selected primary colors and peak emission profiles of the fluorophores correspond to the peak RGB channel responses of the CCD camera. A DNA sample and the fluorophore-quencher probes are located within the imaging chamber. The color CCD camera is focused on the imaging chamber for simultaneous detection of up to three targets from fluorescence of the DNA sample and the fluorophore-quencher probes.

Nucleic acid sequencing methods and systems, the systems including nanochannel chip including: a nanochannel formed in an upper surface of the nanochannel chip and; a roof covering the nanochannel and comprising nanopores and a field enhancement structure; and a barrier disposed in the nanochannel. The method including: introducing a buffer solution including long-chain nucleic acids to the nanochannel chip; applying a voltage potential across the nanochannel chip to drive the nucleic acids through the nanochannel, towards the barrier, and to translocate the nucleic acids through nanopores adjacent to the barrier, such that bases of each of the nucleic acids pass through the field enhancement structure one base at a time and emerge onto an upper surface of the roof; detecting the Raman spectra of the bases of the nucleic acids as each base passes through the electromagnetic-field enhancement structure; and sequencing the nucleic acids based on the detected Raman spectra.

The present invention concerns processes for barcoding nucleic acids from single cells and processes for genotyping single cells having a phenotype of interest.

The present invention concerns processes for barcoding nucleic acids from single cells and processes for genotyping single cells having a phenotype of interest.

An objective lens is used for DNA sequencing. An example system includes a flow cell, the objective lens, and a camera. Light from the flow cell is imaged by the camera through the objective lens. The objective lens can provide a long working distance; a flat field curvature; a high numerical aperture; and/or a wide field of view.

An objective lens is used for DNA sequencing. An example system includes a flow cell, the objective lens, and a camera. Light from the flow cell is imaged by the camera through the objective lens. The objective lens can provide a long working distance; a flat field curvature; a high numerical aperture; and/or a wide field of view.