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Pacific Northwest National Laboratory

Simulation of electric potentials and ion motion in planar electrode structures for lossless ion manipulations (SLIM).

TitleSimulation of electric potentials and ion motion in planar electrode structures for lossless ion manipulations (SLIM).
Publication TypeJournal Article
Year of Publication2014
AuthorsGarimella SVB, Ibrahim YM, Webb IK, Tolmachev AV, Zhang X, Prost SA, Anderson GA, Smith RD
JournalJ Am Soc Mass Spectrom
Abstract

We report a conceptual study and computational evaluation of novel planar electrode structures for lossless ion manipulations (SLIM). Planar electrode SLIM components were designed that allow for flexible ion confinement, transport, and storage using a combination of radio frequency (rf) and DC fields. Effective potentials can be generated that provide near ideal regions for confining and manipulating ions in the presence of a gas. Ion trajectory simulations using SIMION 8.1 demonstrated the capability for lossless ion motion in these devices over a wide m/z range and a range of electric fields at low pressures (e.g., a few Torr). More complex ion manipulations (e.g., turning ions by 90(o) and dynamically switching selected ion species into orthogonal channels) are also shown feasible. The performance of SLIM devices at ~4 Torr pressure for performing ion mobility-based separations (IMS) is computationally evaluated and compared with initial experimental results, and both are also shown to agree closely with experimental and theoretical IMS performance for a conventional drift tube design.

DOI10.1007/s13361-014-0976-y
Alternate JournalJ. Am. Soc. Mass Spectrom.
PubMed ID25257188
PubMed Central IDPMC4198429
Grant ListP41 GM103493 / GM / NIGMS NIH HHS / United States
P41GM103493 / GM / NIGMS NIH HHS / United States
R21 GM103497 / GM / NIGMS NIH HHS / United States
R21 GM103497 / GM / NIGMS NIH HHS / United States
Area of Research: 
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