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Related Experiment Video

Updated: Feb 1, 2026

Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps

Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps

Published on: August 17, 2017

A Microscale Planar Linear Ion Trap Mass Spectrometer.

Trevor K Decker¹, Yajun Zheng¹, Aaron J Ruben¹

¹Brigham Young University, Provo, UT, USA.

Journal of the American Society for Mass Spectrometry

|December 14, 2018

Summary

This summary is machine-generated.

Miniaturized planar linear ion traps (PLITs) offer reduced power consumption for mass spectrometry. This microscale PLIT demonstrates comparable resolution to larger versions while using significantly less power.

Keywords:

Instrumentation Ion trap miniaturization Ion traps Mass spectrometry

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Area of Science:

Analytical Chemistry
Instrument Science

Background:

Planar linear ion traps (PLITs) are miniaturized versions of 2D linear quadrupole ion traps.
PLITs utilize lithographically patterned electrodes on dielectric substrates.

Purpose of the Study:

To present a successfully miniaturized microscale PLIT.
To demonstrate the scaling principles and power-mass tradeoffs in ion trap mass spectrometers.

Main Methods:

Miniaturization of a PLIT from a 2.5 mm radius to an 800 μm radius.
Mathematical analysis of ion trap scaling, including RF power and pseudopotential well depth.
Experimental verification using toluene/deuterated toluene and isobutylbenzene.

Main Results:

The microscale PLIT achieved resolutions of approximately 1.5 Da at 5.4 × 10⁻³ Torr.
Maintained resolutions between 2.3 and 2.7 Da at pressures up to 42 × 10⁻³ Torr.
Consumed 1/100th of the time-average power of the original PLIT, with a reduced potential well depth.

Conclusions:

The microscale PLIT retains useful resolution while significantly reducing power consumption.
Scaling principles demonstrate a tradeoff between RF power and pseudopotential well depth.
This miniaturized PLIT is a promising development for portable mass spectrometry applications.