Devices and methods for determining the length of biopolymers and distances between probes bound thereto
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United States of America Patent
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Sep 11, 2012
Grant Date -
Apr 1, 2010
app pub date -
Sep 3, 2009
filing date -
Sep 3, 2008
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Abstract
Devices and methods for detecting the length of analytes and/or sequencing analytes are provided in which two or more electrical signals are obtained as an analyte traverses a fluidic channel. Detection of the relative position of probes hybridized to a biopolymer and/or the length of the analyte (e.g., a biopolymer) does not rely on the absolute time between detection events of a given electrical signal to determine a distance associated with the biopolymer. Instead, multiple signals are obtained (e.g., as functions of time) corresponding to a plurality of detector volumes at known locations along a fluidic channel through which the biopolymer passes, and the distances are determined from the multiple signals.
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