Performance and geometry optimization of the ceramic‐based rectilinear ion traps

Wang, Liang; Xu, Fuxing; Ding, Chuan‐Fan

doi:10.1002/rcm.6308

Cited by 28 publications

(36 citation statements)

References 49 publications

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“…163 Chaudhary and coworkers constructed a miniature cylindrical ion trap by punching donut shapes from a sheet of low-temperature co-fired ceramic, laminating the sheets, firing the structure, plating the surface with Ni for adhesion and Au for conductivity via sputtering or evaporation, and finally photolithographically etching the appropriate electrode pattern. Other traps, including those with planar resistive electrodes, 164 a halo ion trap, 120 a rectilinear ion trap, 165 and, most recently, a linear ion trap array with six mass analyzers 144 have been built using metal-coated ceramic materials.…”

Section: Mems and Other Alternative Fabrication Methodsmentioning

confidence: 99%

Miniature and Fieldable Mass Spectrometers: Recent Advances

et al. 2015

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Section: Mems and Other Alternative Fabrication Methodsmentioning

confidence: 99%

Miniature and Fieldable Mass Spectrometers: Recent Advances

et al. 2015

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“…The x and y electrodes were machined via the newest ceramic gold-plating technology. [34][35][36][37] Each electrode was 40 and 5 mm in length and width, respectively. A side electrode and a central electrode with a slit (32 mm × 0.7 mm) were located at the center of the x and y electrodes and used as adjustable electrodes.…”

Section: Lit Mass Analyzermentioning

confidence: 99%

A hand-portable digital linear ion trap mass spectrometer

Xue

Lulu

Huang

et al. 2016

Analyst

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A hand-portable digital linear ion trap mass spectrometer (DLIT-MS) has been developed for VOC analysis. It has a weight of 18 kg with dimensions of 49 cm × 39 cm × 16 cm, and consumes an average power of ca. 60 W. As a result of the introduction of a digital waveform, the DLIT-MS can be driven at a lower voltage (±100 V) to cover a mass range of 30-300 Th with a unit resolution. Compact electronics has been designed to control the DLIT-MS and record mass spectra. The mass drift was reduced after the improvement in electronics to stabilize the digital waveform voltage during the mass scan. Tandem mass spectrometry (MS) has been achieved by using digital asymmetric waveform isolation (DAWI), forward and reverse scan, and collision induced dissociation (CID). The isolation and CID efficiency for methyl salicylate were 83.9% and 81.3%, respectively. A novel buffer gas inlet system was designed to enhance the sensitivity and allow easy and safe use of the instrument. Limits of detection below 1 ppbv were obtained for several mixed gaseous samples.

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“…As previously reported, 38,41,42 tandem mass spectrometry experiments involve several stages including ion injection, ion cooling, ion isolation, collision-induced dissociation, and mass analysis. Ion excitation in both x-and y-directions was performed by turning on the CD4066 switch with a DC voltage of 9 V in the stage of collision-induced dissociation.…”

Section: ■ Results and Discussionmentioning

confidence: 95%

Enhancement of Ion Activation and Collision-Induced Dissociation by Simultaneous Dipolar Excitation of Ions inx- andy-Directions in a Linear Ion Trap

Dang

Xie

et al. 2015

Anal. Chem.

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Collision-induced dissociation (CID) in linear ion traps is usually performed by applying a dipolar alternating current (AC) signal to one pair of electrodes, which results in ion excitation mainly in one direction. In this paper, we report simulation and experimental studies of the ion excitation in two coordinate directions by applying identical dipolar AC signals to two pairs of electrodes simultaneously. Theoretical analysis and simulation results demonstrate that the ion kinetic energy is higher than that using the conventional CID method. Experimental results show that more activation energy (as determined by the intensity ratio of the a4/b4 fragments from the CID of protonated leucine enkephalin) can be deposited into parent ions in this method. The dissociation rate constant in this method was about 3.8 times higher than that in the conventional method under the same experimental condition, at the Mathieu parameter qu (where u = x, y) value of 0.25. The ion fragmentation efficiency is also significantly improved. Compared with the conventional method, the smaller qu value can be used in this method to obtain the same internal energy deposited into ions. Consequently, the "low mass cut-off" is redeemed and more fragment ions can be detected. This excitation method can be implemented easily without changing any experimental parameters.

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Performance and geometry optimization of the ceramic‐based rectilinear ion traps

Cited by 28 publications

References 49 publications

Miniature and Fieldable Mass Spectrometers: Recent Advances

Miniature and Fieldable Mass Spectrometers: Recent Advances

A hand-portable digital linear ion trap mass spectrometer

Enhancement of Ion Activation and Collision-Induced Dissociation by Simultaneous Dipolar Excitation of Ions inx- andy-Directions in a Linear Ion Trap

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