Langmuir-Blodgett monolayers may show nanoscopic periodic patterns parallel and/or perpendicular to the transfer direction. The experimental findings are interpreted by a nonequilibrium model based on the stability of surfactant concentration and film thickness coupled fluctuations near the meniscus of a surfactant-covered receding thin film. In the high and low transfer speed limits, periodic fluctuations of the fluid subphase thickness, respectively perpendicular and parallel to the transfer, are selected. A qualitative phase diagram shows how transfer speed and film density manage the pattern shape.
|Titolo:||Switching direction of laterally ordered monolayers induced by transfer instability|
|Data di pubblicazione:||2007|
|Citazione:||Switching direction of laterally ordered monolayers induced by transfer instability / Raudino A; Pignataro Bruno. - In: JOURNAL OF PHYSICAL CHEMISTRY. B, CONDENSED MATTER, MATERIALS, SURFACES, INTERFACES & BIOPHYSICAL. - ISSN 1520-6106. - 111:31(2007), pp. 9189-9192.|
|Appare nelle tipologie:||1.1 Articolo in rivista|