Electrically Induced Liquid–Liquid Phase Transition in a Floating Water Bridge Identified by Refractive Index Variations

Elmar Christof Fuchs*, Jakob Woisetschläger, Adam D. Wexler, René Pecnik, Giuseppe Vitiello

*Korrespondierende/r Autor/in für diese Arbeit

Publikation: Beitrag in einer FachzeitschriftArtikel

Abstract

A horizontal electrohydrodynamic (EHD) liquid bridge (also known as a “floating water bridge”) is a phenomenon that forms when high voltage DC (kV·cm−1) is applied to pure water in two separate beakers. The bridge, a free-floating connection between the beakers, acts as a cylindrical lens and refracts light. Using an interferometric set-up with a line pattern placed in the background of the bridge, the light passing through is split into a horizontally and a vertically polarized component which are both projected into the image space in front of the bridge with a small vertical offset (shear). Apart from a 100 Hz waviness due to a resonance effect between the power supply and vortical structures at the onset of the bridge, spikes with an increased refractive index moving through the bridge were observed. These spikes can be explained by an electrically induced liquid–liquid phase transition in which the vibrational modes of the water molecules couple coherently
Originalspracheenglisch
Aufsatznummer602
Seitenumfang15
FachzeitschriftWater
Jahrgang13
Ausgabenummer5
DOIs
PublikationsstatusVeröffentlicht - 1 Mär 2021

ASJC Scopus subject areas

  • !!Water Science and Technology
  • !!Geography, Planning and Development
  • !!Aquatic Science
  • !!Biochemistry

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