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Cantilever biosensor reader using a common-path, holographic optical interferometer
DOI:10.1063/1.3522888.png)
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We demonstrate an optical reader principle aimed at monitoring biologically induced deflections of microcantilevers often used in biosensor systems. The principle is based on a so-called common-path optical interferometer in which the two interfering optical beams are copropagating, which makes the system less sensitive to external disturbances. A detection limit of around 1 nm's deflection is demonstrated. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3522888]
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3.6
论文数:
10.4W
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17.8W
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