2023/05/24 by Ximo Gallud, Gallud, Ximo, Paulo Lozano +1
Chemistry · Engineering · #Applied Physics (physics.app-ph) #Electrohydrodynamics and Fluid Dynamics #FOS: Physical sciences #Mass Spectrometry Techniques and Applications #Microfluidic and Capillary Electrophoresis Applications
paper · pdf · doi:10.48550/arxiv.2305.14714
openalex publication_date 2023/05/24 · openalex created_date 2023/05/27 · openalex updated_date 2026/07/28
Electrohydrodynamic modeling and experimental observations indicate that the ion evaporation current emitted by passively-fed electrospray sources is independent of the electrical conductivity of the ionic liquid. This contrasts with cone-jet electrosprays, in which current depends on conductivity at fixed flow rates. The current in the pure ionic regime is controlled by the bias voltage and flow impedance, where a low viscosity is key for its enhancement. In addition to clarifying the role of electric conductivity in ionic liquid ion sources, this observation provides guidance to the selection of liquid properties for a particular application.