Control Of Screening Of A Charged Particle In Electrolytic Aqueous Paul Trap
- Physics Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831-6372 (United States)
Individual charged particles could be trapped and confined by the combined radio-frequency and DC quadrupole electric field of an aqueous Paul trap. Viscosity of water improves confinement and extends the range of the trap parameters which characterize the stability of the trap. Electrolyte, if present in aqueous solution, may screen the charged particle and thus partially or fully suppress electrophoretic interaction with the applied filed, possibly reducing it to a generally much weaker dielectrophoretic interaction with an induced dipole. Applying molecular dynamics simulation we show that the quadrupole field has a different effect at the electrolyte ions and at much heavier charged particle, effectively eliminating the screening by electrolyte ions and reinstating the electrophoretic confinement.
- OSTI ID:
- 21513346
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1336; ISSN APCPCS; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
AQUEOUS SOLUTIONS
BROWNIAN MOVEMENT
CALCULATION METHODS
CARBON
CHARGED PARTICLES
DIPOLES
DISPERSIONS
ELECTRIC FIELDS
ELECTROLYTES
ELECTROMAGNETIC RADIATION
ELECTROPHORESIS
ELEMENTS
FULLERENES
HOMOGENEOUS MIXTURES
HYDROGEN COMPOUNDS
INTERACTIONS
IONS
MIXTURES
MOLECULAR DYNAMICS METHOD
MULTIPOLES
NONMETALS
OXYGEN COMPOUNDS
PARTICLES
RADIATIONS
RADIOWAVE RADIATION
SCREENING
SCREENS
SIMULATION
SOLUTIONS
STABILITY
TRAPS
VISCOSITY
WATER