Open AccessIon Trapping, Storage, and Ejection in Structures for Lossless Ion Manipulations
Author(s) -
Xinyu Zhang,
Sandilya Garimella,
Spencer Prost,
Ian Webb,
Tsung Chi Chen,
Keqi Tang,
Aleksey V. Tolmachev,
Randolph V. Norheim,
Erin Baker,
Gordon A. Anderson,
Yehia Ibrahim,
Richard Smith
Publication year - 2015
Publication title -
analytical chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.117
H-Index - 332
eISSN - 1520-6882
pISSN - 0003-2700
DOI - 10.1021/acs.analchem.5b00214
Subject(s) - ion , chemistry , electrode , trapping , ion trapping , voltage , torr , optoelectronics , atomic physics , analytical chemistry (journal) , ion trap , electrical engineering , materials science , physics , ecology , organic chemistry , chromatography , biology , engineering , thermodynamics
A new Structures for Lossless Ion Manipulations (SLIM) module, having electrode arrays patterned on a pair of parallel printed circuit boards (PCB), was constructed and utilized to investigate capabilities for ion trapping at a pressure of 4 Torr. Positive ions were confined by application of RF voltages to a series of inner rung electrodes with alternating phase on adjacent electrodes, in conjunction with positive DC potentials on surrounding guard electrodes on each PCB. An axial DC field was also introduced by stepwise varying the DC potentials applied to the inner rung electrodes to control the ion transport and accumulation inside the ion trapping region. We show that ions can be trapped and accumulated with up to 100% efficiency, stored for at least 5 h with no significant losses, and then could be rapidly ejected from the SLIM trap. The present results provide a foundation for the development of much more complex SLIM devices that facilitate extended ion manipulations.