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Abstract
The present invention is directed to systems, devices and methods for identifying biopolymers, such as strands of DNA, as they pass through a constriction such as a carbon nanotube nanopore. More particularly, the invention is directed to such systems, devices and methods in which a newly translocated portion of the iopolymer forms a temporary electrical circuit between the nanotube nanopore and a second electrode, which may also be a nanotube. Further, the invention is directed to such systems, devices and methods in which the constriction is provided with a transnaionilized unit which, together with a newly translocated portion of the biopolymer, forms a temporary electrical circuit that can be used to characterize the portion of the biopolymer.
4 Citations
28 Claims
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1-17. -17. (canceled)
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18. A method of sequencing a target molecule, the method comprising:
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providing an apparatus including; a substrate; a first electrode passing through at least a portion of the substrate, the first electrode including a nanopore and configured to permit the translocation of a target molecule therethrough, the first nanotube including a first recognition element connected to an end thereof; a second electrode supported by the substrate and disposed in a fixed relationship with respect to said first electrode, the second electrode forming a first gap with the first electrode, the second electrode including a second recognition element connected to an end thereof; and an electrical circuit configured to detect, upon passage of the target molecule past said gap, an electrical current between the first electrode and the second electrode; and a first chamber and a second chamber, the first chamber being located on a first side of the device and the second chamber being located on a second side of the device; introducing a target molecule into the second chamber; electrophoresing the target molecule so that it translocates through the nanopore; and detecting an electrical current passing through the first electrode, the first recognition element, the target molecule, the second recognition element, and the second electrode. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification