Stability of an aqueous quadrupole micro-trap

The recently demonstrated functionality of an aqueous quadrupole micro- or nano-trap opens a new avenue for applications of Paul traps, like confinement of a charged biomolecule which requires a water environment for its chemical stability. Besides the strong viscosity forces, the motion of a charge...

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Bibliographic Details
Published inJournal of physics. Condensed matter Vol. 24; no. 16; pp. 164208 - 8
Main Authors Park, Jae Hyun, Krsti, Predrag S
Format Journal Article
LanguageEnglish
Published England IOP Publishing 25.04.2012
Subjects
Charged particles
Charging
Condensed matter
Confinement
Electrophoresis - methods
Microtechnology - methods
Nanostructure
Quadrupoles
Stability
Viscosity
Water - chemistry
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Summary:The recently demonstrated functionality of an aqueous quadrupole micro- or nano-trap opens a new avenue for applications of Paul traps, like confinement of a charged biomolecule which requires a water environment for its chemical stability. Besides the strong viscosity forces, the motion of a charged particle in the aqueous trap is subject to dielectrophoretic and electrophoretic forces. In this study, we describe the general conditions for stability of a charged particle in an aqueous quadrupole trap. We find that for typical micro-trap parameters, the effects of both dielectrophoresis and electrophoresis significantly influence the trap stability. In particular, an aqueous quadrupole trap could play the role of a synthetic virtual nanopore for the third generation of DNA sequencing technology.
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USDOE
AC05-00OR22725
ISSN:0953-8984
1361-648X
1361-648X
DOI:10.1088/0953-8984/24/16/164208