Three-Dimensional Nanoporous Graphene Substrate for Surface-Enhanced   Raman Scattering
  We synthesized three-dimensional nanoporous graphene films by a chemical vapor deposition method with nanoporous copper as a catalytic substrate. The resulting nanoporous graphene has the same average pore size as the underlying copper substrate. Our surface-enhanced Raman scattering (SERS) investigation indicates that the nanoporosity of graphene significantly improves the SERS efficiency of graphene as a substrate as compared to planar graphene substrates. 
Zhiqiang Tu, Shangfei Wu, Fan Yang, Yongfeng Li, Liqiang Zhang,   Hongwen Liu, Hong Ding, Pierre Richard
cond-mat.mtrl-sci cond-mat.mes-hall