Symposium Sessions (Day1, Day2, Day3)
Basic Sessions (Day1, Day2, Day3)
Young Researchers' Sessions (Day1, Day2, Day3)
Poster Presentations
- Day 2, May 16（Tue.） Room P (Foyer, Room 1004-1007)
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2P-53 PDF
Feedback control of electrospray ionization by real-time measurement of Taylor cone apex angle and spray current
In the electrospray ionization (ESI), a conical-charged droplet (also called a Taylor cone) is generated at the tip of the emitter capillary. Depending on the flow rate and the physical parameter of the liquid, and the emitter voltage, the electrospray can be operated in the pulsation, cone-jet, or multi-jet modes. In the cone-jet mode, the shape of the Taylor cone also changes with the variation of the voltage. Ideally, the stable cone-jet state should always be maintained. In practice however, small fluctuations such as changes in the conductivity and surface tension of the solvent, atmospheric changes, and deviations in experimental conditions can disrupt the cone-jet state, causing the ESI to become unstable.
To solve this problem, we have developed a feedback control for ESI by real-time measurement of the Taylor cone apex angle and spray current to maintain the electrospray under the cone-jet mode.