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A Method to Study Adaptation to Left-Right Reversed Audition
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Variational theory for nematoacoustics.

Epifanio G Virga1

  • 1Dipartimento di Matematica and CNISM, Università di Pavia, Via Ferrata 1, 27100 Pavia, Italy. eg.virga@unipv.it

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|November 13, 2009
PubMed
Summary
This summary is machine-generated.

This study proposes a new dynamical theory for nematoacoustics, explaining ultrasonic wave effects on nematic liquid crystals. The theory, based on second-grade fluid dynamics, is validated by experimental results.

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Area of Science:

  • Physics
  • Materials Science
  • Acoustics

Background:

  • The interaction between ultrasonic waves and nematic liquid crystals is a known phenomenon.
  • Existing theoretical frameworks lack a coherent dynamical explanation for these effects.

Purpose of the Study:

  • To propose a novel coherent dynamical theory for nematoacoustics.
  • To provide a theoretical interpretation of ultrasonic wave effects on nematic textures.

Main Methods:

  • Review of diverse theoretical approaches for sound-nematic molecular orientation.
  • Revival of second-grade fluid theory as a basis for nematoacoustics.
  • Explicit application of the proposed theory to a computable case.

Main Results:

  • A new theoretical framework for nematoacoustics is presented.
  • The theory offers a dynamical explanation for ultrasonic wave interactions.
  • Predictions derived from the theory are qualitatively supported by experimental data.

Conclusions:

  • The proposed dynamical theory provides a coherent interpretation of ultrasonic wave effects on nematic textures.
  • Second-grade fluid theory is a suitable foundation for nematoacoustics.
  • The theory's predictions align with experimental observations, validating its approach.