Journal
APPLIED SURFACE SCIENCE
Volume 252, Issue 13, Pages 4824-4828Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2005.07.143
Keywords
morphology; MAPLE; PEG
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The dependence of the surface morphology on the substrate temperature during film deposition was investigated for polyethylene glycol (PEG) films by matrix-assisted pulsed laser evaporation (MAPLE). The surface structure was studied with a combined technique of optical imaging and AFM measurements. There was a clear difference between the films produced below and above the melting point of PEG. For temperatures above the melting point, the polymer material was distributed non-uniformly over the substrate with growths areas, where cluster-like structures merge into large islands of micrometer size. At these temperatures, the islands in the investigated growth areas cover most of the bottom layer which has a typical height of 50-150 nm. (c) 2005 Elsevier B.V. All rights reserved.
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