Jt. Woodward et Ja. Zasadzinski, AMPLITUDE, WAVE-FORM, AND TEMPERATURE-DEPENDENCE OF BILAYER RIPPLES IN THE P-BETA' PHASE, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 53(4), 1996, pp. 3044-3047
Scanning tunneling microscopy-freeze-fracture replication has provided
a quantitative, high resolution description of the wave form and ampl
itude of rippled bilayers in the P-beta' phase of dimyristoylphosphati
dylcholine. The ripples are uniaxial and asymmetric, with a temperatur
e dependent amplitude of 2.4 nm near the chain melting temperature dec
reasing to zero at the chain crystallization temperature. The waveleng
th of 11 nm does not change with temperature. The observed ripple shap
e and the temperature induced structural changes are not predicted by
any current theory.