Taylor cone and electrospraying at a free surface of superfluid helium charged from below.

Moroshkin, P; Leiderer, P; Möller, Th B; Kono, K · Phys Rev E · 2017

basic_science · Level V

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Abstract

Electrically charged metallic micro- and nanoparticles are trapped under a free surface of superfluid He in a vertical static electric field. We observe a static deformation of the charged liquid surface in the form of a Taylor cone and the emission of a charged liquid helium jet (electrospray). Our numeric calculations reproduce the static shape of the cone.