Abstract
As a first step towards understanding the anomalous kinetic roughening withmultifractality found in recent experiments on vapor deposition polymerization(VDP) growth, we study a simple toy model of the VDP growth in a(1+1)-dimensional lattice, along with monomer diffusion, polymer nucleation, limited active endbonding, and shadowing effects. Using extensive numerical simulations, we observe that theglobal roughness exponent is different from the local one. It is argued that suchanomalies in VDP growth are attributable to the instability induced by the non-localshadowing effects on active ends of polymers. Varying the ratio of the diffusioncoefficient to the deposition rate by means of a cosine flux, we also consider the roleof diffusion in kinetic roughening of polymer thin film growth, which is quitedifferent from that for metal or semiconductor film growth. Finally, we suggest a(2+1)-dimensional version, which can be directly compared with experimental results.
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