+

+

+

+

Solvent evaporation

+

Coulomb fission

+

+

+

Power supply

+ve

-ve

Spraying nozzle

Taylor cone

Analyte molecule

Charged parent droplet

Charged droplet at the Rayleigh limit

Charged progeny droplets

Naked charged analyte

e⁻

+

+

+

+

+

+

+

+

+