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Method for trapping and manipulating nanoscale objects in solution
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/content/aip/journal/apl/86/9/10.1063/1.1872220
2005-02-25
2014-10-23

Abstract

We present a device that allows a user to trap a single nanoscale object in solution at ambient temperature, and then to position the trapped object with nanoscale resolution. This anti-Brownian electrophoretic trap (ABEL trap) works by monitoring the Brownian motion of the particle (via fluorescence microscopy), and then applying a feedback voltage to the solution so that the electrophoretic drift exactly cancels the Brownian motion. The ABEL trap works on any object that can be imaged optically and that acquires a charge in water. The ABEL trap is noninvasive, is gentle enough to handle biological molecules, and can trap objects far smaller than can be trapped with laser tweezers. Our proof-of-principle device can trap fluorescent polystyrene nanospheres with diameters down to .

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Scitation: Method for trapping and manipulating nanoscale objects in solution
http://aip.metastore.ingenta.com/content/aip/journal/apl/86/9/10.1063/1.1872220
10.1063/1.1872220
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