Fabrication and characterization of laser-heated, multiplexed electrospray emitter

文献情報

出版日 2021-03-12

DOI 10.1039/D1AN00264C

インパクトファクター 4.616

著者

Emily R. Groper, Jack A. Barnes, Rory McEwen, Younès Messaddeq, Richard D. Oleschuk

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要旨

We present a one-step fabrication method for a new multiplexed electrospray emitter with nine parallel micronozzles. The nozzles were formed by wet chemical etching of the end of a microstructured silica fiber containing nine 10 μm flow channels. By carefully adjusting the water flow through the channels while etching, we controlled the shape of the conical micronozzles and were able to obtain conditions under which the micronozzles, together with the flow channels, formed optical micro-axicon lenses. When 1064 nm light was guided through the flow channels and focused by the micro-axicon lenses into the Taylor cones, we were able to increase the desolvation of a model analyte and thereby increased the spray current produced by the emitter. This work paves the way towards a rapidly modulated mass-spectrometry source having a greatly enhanced throughput.

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CiteScore: 7.8

自己引用率: 5.6%

年間論文数: 653

Analyst publishes analytical and bioanalytical research that reports premier fundamental discoveries and inventions, and the applications of those discoveries, unconfined by traditional discipline barriers.

Fabrication and characterization of laser-heated, multiplexed electrospray emitter

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