▎ 摘　　要

We have observed the nucleation and growth of carbon nanowalls at the electrode surface during laser ablation experiments conducted in water under the presence of an electric field. The nanowalls consist graphene sheets (2-6 layers) in a flower-like arrangement which uniformly cover the whole electrode surface. The deposition mechanism and the role of the plasma-produced carbon species are discussed. (C) 2012 Elsevier Ltd. All rights reserved.