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Title: Characterization of Traveling Wave Ion Mobility Separations in Structures for Lossless Ion Manipulations

We report on the development and characterization of a new traveling wave-based Structure for Lossless Ion Manipulations (TW-SLIM) for ion mobility separations (IMS). The TW-SLIM module uses parallel arrays of rf electrodes on two closely spaced surfaces for ion confinement, where the rf electrodes are separated by arrays of short electrodes, and using these TWs can be created to drive ion motion. In this initial work, TWs are created by the dynamic application of dc potentials. The capabilities of the TW-SLIM module for efficient ion confinement, lossless ion transport, and ion mobility separations at different rf and TW parameters are reported. The TW-SLIM module is shown to transmit a wide mass range of ions (m/z 200–2500) utilizing a confining rf waveform (~1 MHz and ~300 V p-p) and low TW amplitudes (<20 V). Additionally, the short TW-SLIM module achieved resolutions comparable to existing commercially available low pressure IMS platforms and an ion mobility peak capacity of ~32 for TW speeds of <210 m/s. TW-SLIM performance was characterized over a wide range of rf and TW parameters and demonstrated robust performance. In conclusion, the combined attributes of the flexible design and low voltage requirements for the TW-SLIM module provide a basismore » for devices capable of much higher resolution and more complex ion manipulations.« less
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  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Biological Sciences Division
Publication Date:
Report Number(s):
Journal ID: ISSN 0003-2700; 48135; 47418; 40072; 24698; 20496; 400412000
Grant/Contract Number:
AC05-76RL01830; P41 GM103493
Accepted Manuscript
Journal Name:
Analytical Chemistry
Additional Journal Information:
Journal Volume: 87; Journal Issue: 22; Journal ID: ISSN 0003-2700
American Chemical Society (ACS)
Research Org:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Org:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23); National Inst. of General Medical Sciences
Country of Publication:
United States
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Ion trajectory simulations; PCB-based SLIM boards; peak capacity; peak generation rate; long ion path length; Environmental Molecular Sciences Laboratory
OSTI Identifier: