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Fluid Ferroelectric Filaments.

Marcell T Máthé1,2, Kelum Perera3, Ágnes Buka1

  • 1Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, P.O. Box 49, Budapest, H-1525, Hungary.

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Researchers created freestanding ferroelectric liquid crystal threads. These novel fluid filaments, stabilized by electric fields, are highly stable and enable new material property measurements.

Keywords:
electrically stabilized threadsferroelectric liquidfluid filaments

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Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Fluid Dynamics

Background:

  • Ferroelectric nematic liquid crystals exhibit unique electrical properties.
  • Fluid filaments in dielectric media are known but require high voltages.
  • Stable freestanding fluid structures are challenging to create and control.

Purpose of the Study:

  • To describe the formation and stabilization of freestanding ferroelectric nematic liquid crystal filaments.
  • To investigate the role of internal and external electric fields in stabilizing these fluid threads.
  • To explore the potential of these ferroelectric fluid threads for measuring fundamental physical properties.

Main Methods:

  • Formation of slender fluid filaments from room-temperature ferroelectric nematic liquid crystals.
  • Stabilization using internal electric fields generated by polarization splay.
  • Stabilization using external voltage applied across suspending wires.

Main Results:

  • Successfully created freestanding slender fluid filaments of ferroelectric nematic liquid crystals.
  • Demonstrated stabilization via internal bound charges and external voltage.
  • Observed significantly lower required voltages and higher aspect ratios compared to dielectric fluids.
  • Showcased the potential for measuring ferroelectric polarization and viscosity.

Conclusions:

  • Freestanding ferroelectric nematic liquid crystal threads are novel and stable fluid structures.
  • These threads offer a unique platform for studying ferroelectric materials.
  • Potential applications exist in micro- and nano-scale electronic and fluidic devices.