Light-Scattering Study of Fluctuations in Blue-Phase II
- 1 January 1985
- journal article
- research article
- Published by Taylor & Francis in Molecular Crystals and Liquid Crystals
- Vol. 122 (1) , 131-140
- https://doi.org/10.1080/00268948508074747
Abstract
The lattice-paramater fluctuations seen in blue-phase II are studied by quasi-elastic light scattering. The spectrum in frequency and k-space, I(q,v), is expressible as S(v)A(q). In the range 4–3500 Hz, S(v) could be fitted to a sum of two central lorentzians plus a constant. Below 4 Hz, there was excess noise with at least two more characteristic frequencies. The spectra show that the fluctuating quantity is neither a simple relaxation nor just a propagating wave, but something more complex.Keywords
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