Observation of novel liquid-crystalline phase above the bulk-melting temperature.
نویسندگان
چکیده
In this paper, we show that a noncrystalline but ordered smectic-like phase exists above the bulk-melting temperature (T(m)) at poly(n-alkyl acrylates)-air interface. The surface ordered phase is one monolayer thick and undergoes a sharp transition from order to disorder 10 degrees C above T(m) for n=22. The presence of a surface phase that does not exist in the bulk has important implications in the design of thermally responsive adhesives.
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ورودعنوان ژورنال:
- Physical review letters
دوره 90 21 شماره
صفحات -
تاریخ انتشار 2003