Sensing biomolecules using scanning probe with twin-nanopore to detect a change in the magnitude of the current through the second nanopore
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United States of America Patent
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May 5, 2015
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Aug 21, 2012
filing date -
Aug 21, 2012
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Abstract
A mechanism is provided for sensing molecules. A twin-nanopore probe includes a first channel and a second channel. A first pressure-controlled reservoir is connected to the first channel to generate a positive pressure. A second pressure-controlled reservoir is connected to the second channel to generate a negative pressure. A container includes ionic solvent with molecules, and a tip of the twin-nanopore probe is submerged in the container of the ionic fluid with the molecules. The first channel, the second channel, the first pressure-controlled reservoir, and the second pressure-controlled reservoir are filled with the ionic fluid. The first pressure-controlled reservoir drives the ionic fluid out of the first channel and the second pressure-controlled reservoir draws in the ionic fluid with the molecules and solvent through the second channel. A change in magnitude of ionic current through the second nanopore of twin-nanopore probe is detected when molecules pass through the second nanopore.
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