The invention proposes a device for analyzing nucleic acid molecules (M), comprising: a bead (20), on which one molecule can be anchored at one end, a surface (520), on which the molecule can be anchored at the other end, an actuator (30), adapted to cause the bead to move relative to said surface in one direction, a sensor (50), adapted to measure a distance between the bead and the surface, the device further comprising a well (11), having an axis (X-X) extending along the direction of motion of the bead and a bottom (110) formed by said surface, said well being filled with electrically conductive solution (40), and receiving the bead, the sensor being adapted to measure an impedance of the well, depending on a distance between the bead and the surface, to determine, the distance between the bead and the surface.

Methods of controlling biological processes by altering the electric field gradient in a test chamber are disclosed. A portion of a surface of the test chamber is attached to at least one immobilized component of the biological process. Microfluidic devices capable of same are also disclosed.

Methods of controlling biological processes by altering the electric field gradient in a test chamber are disclosed. A portion of a surface of the test chamber is attached to at least one immobilized component of the biological process. Microfluidic devices capable of same are also disclosed.

A kit includes an array of charge sensors attached to a solid-phase substrate , wherein individual charge sensors in the array respectively comprise a channel and a polymerase and are located at different addressable locations on the solid-phase substrate; and a liquid comprising a plurality of different nucleic acids, each of the different nucleic acids including a unique label to be detected by a charge sensor of the array.

A kit includes an array of charge sensors attached to a solid-phase substrate , wherein individual charge sensors in the array respectively comprise a channel and a polymerase and are located at different addressable locations on the solid-phase substrate; and a liquid comprising a plurality of different nucleic acids, each of the different nucleic acids including a unique label to be detected by a charge sensor of the array.

Devices and methods that can detect and control an individual polymer in a mixture is acted upon by another compound, for example, an enzyme, in a nanopore are provided. The devices and methods also determine (>50 Hz) the nucleotide base sequence of a polynucleotide under feedback control or using signals generated by the interactions between the polynucleotide and the nanopore. The invention is of particular use in the fields of molecular biology, structural biology, cell biology, molecular switches, molecular circuits, and molecular computational devices, and the manufacture thereof.

Devices and methods that can detect and control an individual polymer in a mixture is acted upon by another compound, for example, an enzyme, in a nanopore are provided. The devices and methods also determine (>50 Hz) the nucleotide base sequence of a polynucleotide under feedback control or using signals generated by the interactions between the polynucleotide and the nanopore. The invention is of particular use in the fields of molecular biology, structural biology, cell biology, molecular switches, molecular circuits, and molecular computational devices, and the manufacture thereof.

A device for extracting a nucleic acid from a sample liquid includes a heating element configured to be connected to an extraction nucleic acid. The extraction nucleic acid is at least partly complementary to the nucleic acid to be extracted from the sample liquid. The heating element is heatable to a temperature that is equal to or higher than a denaturing temperature of the nucleic acid bound to the extraction nucleic acid.

A device for extracting a nucleic acid from a sample liquid includes a heating element configured to be connected to an extraction nucleic acid. The extraction nucleic acid is at least partly complementary to the nucleic acid to be extracted from the sample liquid. The heating element is heatable to a temperature that is equal to or higher than a denaturing temperature of the nucleic acid bound to the extraction nucleic acid.

The present invention provides methods for increasing polymerase processivity. In some aspects the invention includes providing a polymerase-nucleic acid complex having a nucleic acid comprising a template strand, and the template strand is entrapped in the polymerase through anchors that are covalently connected to each other across the nucleic acid binding cleft of the polymerase. In some cases the anchors comprise cysteines.