Browsing by Author "Moeller, Th. B."

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Taylor cone and electrospraying at a free surface of superfluid helium charged from below
(2017-05-19)
Moroshkin, P.
;
Leiderer, P.
;
Moeller, Th. B.
;
Kono, K.
;
物理研究所
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.
Trapping of metallic nanoparticles under the free surface of superfluid helium in a static electric field
(2019-07-01)
Moroshkin, P.
;
Leiderer, P.
;
Moeller, Th. B.
;
Kono, K.
;
國際半導體學院
Electrically charged metallic microparticles and nanoparticles have been trapped under a free surface of superfluid He-4 in a vertical static electric field. We report the details of the trapping technique and the observed dynamics of the trapped particles moving along the surface and driven by surface waves, by a static horizontal electric field, and by a thermal counterflow within the surface layer of liquid He.