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. Author manuscript; available in PMC: 2017 Jun 14.
Published in final edited form as: Anal Chem. 2017 Jan 19;89(3):1972–1977. doi: 10.1021/acs.analchem.6b04500

Figure 1.

Figure 1

(a) Schematic diagram of the SLIM setup used to test the “elevator”. Ions can move on either the straight pass (blue) or through the elevator to a second SLIM level (red). (b) Schematic diagram of the “elevator” SLIM module utilizing two charge collectors for the straight pass (blue) or the “elevator” pass (red). rf parameters of 1.2 MHz and 200 Vp-p were applied to SLIM and to the ring electrodes. A dc gradient of 11 V/ cm was established through SLIM to drive the ions.