Details
| Original language | English |
|---|---|
| Pages (from-to) | 1813-1823 |
| Number of pages | 11 |
| Journal | Journal of the American Society for Mass Spectrometry |
| Volume | 30 |
| Issue number | 9 |
| Early online date | 28 May 2019 |
| Publication status | Published - 1 Sept 2019 |
Abstract
Keywords
- Electrodynamic ion funnel, Low m/z ratio, Low parasitic capacitance, Printed circuit board, Rectangular ion funnel
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
- Structural Biology
- Chemistry(all)
- Spectroscopy
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In: Journal of the American Society for Mass Spectrometry, Vol. 30, No. 9, 01.09.2019, p. 1813-1823.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - A Simple Printed Circuit Board–Based Ion Funnel for Focusing Low m/z Ratio Ions with High Kinetic Energies at Elevated Pressure
AU - Schlottmann, Florian
AU - Allers, Maria
AU - Kirk, Ansgar T.
AU - Bohnhorst, Alexander
AU - Zimmermann, Stefan
N1 - Funding information: This work was funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – ZI 1288/8-1.
PY - 2019/9/1
Y1 - 2019/9/1
N2 - Ion funnels are one of the key components for transferring ions from higher pressure into the vacuum. Typically, ion funnels are constructed of several different plate ring electrodes with a decreasing inner diameter where radio frequency (RF) voltages and electric DC fields are applied to the electrodes to focus and transport ion clouds. In this work, we developed and investigated a simple and low-cost ion funnel design that is based on standard printed circuit boards (PCB) with integrated planar electrodes including the signal distribution network. This ion funnel is capable of withstanding high electric fields with superimposed RF voltages due to its buried capacitors. To evaluate the ion focusing efficiency of the ion funnel, we simulated the movement of ions inside this funnel and experimentally evaluated the ion transfer. Our simulations show that a rectangular ion funnel like the PCB ion funnel has similar performance compared with conventional stacked ring funnels. Due to the hundredfold lower parasitic capacitance between the planar electrodes compared with conventional ion funnels, high RF voltage amplitudes up to 195 V and reduced electric DC field strengths up to 100 Td can be reached at a frequency of about 5 MHz. Thus, the funnel is appropriate to focus light ions at elevated pressures up to 20 mbar.
AB - Ion funnels are one of the key components for transferring ions from higher pressure into the vacuum. Typically, ion funnels are constructed of several different plate ring electrodes with a decreasing inner diameter where radio frequency (RF) voltages and electric DC fields are applied to the electrodes to focus and transport ion clouds. In this work, we developed and investigated a simple and low-cost ion funnel design that is based on standard printed circuit boards (PCB) with integrated planar electrodes including the signal distribution network. This ion funnel is capable of withstanding high electric fields with superimposed RF voltages due to its buried capacitors. To evaluate the ion focusing efficiency of the ion funnel, we simulated the movement of ions inside this funnel and experimentally evaluated the ion transfer. Our simulations show that a rectangular ion funnel like the PCB ion funnel has similar performance compared with conventional stacked ring funnels. Due to the hundredfold lower parasitic capacitance between the planar electrodes compared with conventional ion funnels, high RF voltage amplitudes up to 195 V and reduced electric DC field strengths up to 100 Td can be reached at a frequency of about 5 MHz. Thus, the funnel is appropriate to focus light ions at elevated pressures up to 20 mbar.
KW - Electrodynamic ion funnel
KW - Low m/z ratio
KW - Low parasitic capacitance
KW - Printed circuit board
KW - Rectangular ion funnel
UR - http://www.scopus.com/inward/record.url?scp=85066490724&partnerID=8YFLogxK
U2 - 10.15488/10988
DO - 10.15488/10988
M3 - Article
C2 - 31140080
AN - SCOPUS:85066490724
VL - 30
SP - 1813
EP - 1823
JO - Journal of the American Society for Mass Spectrometry
JF - Journal of the American Society for Mass Spectrometry
SN - 1044-0305
IS - 9
ER -