Kinetic roughening of laser deposited polymer films: crossover from single particle character to continuous growth.
The crossover in kinetic roughening of thin films from a particle-character-dominated regime to continuous growth behavior has been observed in this work. This has been accomplished by atomic force microscopy investigations of pulsed laser deposited amorphous organic films with thicknesses ranging from several nanometers to more than 4 microm. The early-stage random-deposition-like processes end once a closed layer is formed, which grows without saturation on the characteristic length scales. In addition, the influence of oblique film deposition has been examined and interpreted.
Hachenberg
Jörg
J
I. Physikalisches Institut, Universität Göttingen, Tammannstrasse 1, 37077 Goettingen, Germany.
Streng
Christoph
C
Süske
Erik
E
Vauth
Sebastian
S
Mayr
S G
SG
Krebs
Hans-Ulrich
HU
Samwer
Konrad
K