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Jae Hyun Park, Weihua Guan, Mark A. Reed and Predrag S. Krstić Tunable Aqueous Virtual Micropore Small 8

Version of Record online: 23 JAN 2012 | DOI: 10.1002/smll.201101739

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Charged microparticles in an aqueous environment are trapped in microsized tunable aqueous virtual pores (AVP) formed by quadrupole electric fields of a linear Paul microtrap. The AVP is controlled by the electrophoretic and dielectrophoretic forces, and its main advantage over a physical nanopore is relaxation of critical dimension control, which simplifies device fabrication. The radial dimension of the desired trapping region could be significantly smaller than the actual fabricated dimensions.

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