A theoretical study is carried out into the stability of travelling wave solutions to an approximate dynamic equation for the problem in which a nematic liquid crystal is subjected to crossed electric and magnetic fields. The authors recently found three types of travelling wave solutions for this problem [2], each characterised by the control parameter \(q\) which describes the relationship between the magnitudes of the fields and their crossed angle. Two types of stability are ex amined: the first considers perturbations which vanish outside some finite interval in the moving coordinate of the travelling wave, while the second considers quite general perturbations belonging to a weighted \(L_2({\bf R})\) space, the weighting function being determined by the particular solution and the control parameter \(q\). When the first type of stability occurs, perturbations decay to zero as time increases. In the second type of stability perturbations may eith er decay to zero or induce a small phase shift to the original travelling wave. Both these versions of stability depend crucially on \(q\) and on the type of travelling wave solution being considered.
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Received April 15, 1997
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Stewart, I., Faulkner, T. The stability of travelling waves induced by crossed electric and magnetic fields in nematic liquid crystals. Continuum Mech Thermodyn 9, 191–203 (1997). https://doi.org/10.1007/s001610050065
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DOI: https://doi.org/10.1007/s001610050065