High-resolution differential optical reflectivity was used to study the temperature evolution of the short helical pitch in the Sm-C * α phase of successive members from two liquid-crystal homologous series. With the addition of one CH 2 group, the magnitude and temperature evolution of the pitch change dramatically, and the molecular arrangements between consecutive surface layers found in free-standing films change from being anticlinic to synclmic.
|Original language||English (US)|
|Journal||Physical Review E - Statistical, Nonlinear, and Soft Matter Physics|
|State||Published - Mar 1 2002|
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