(a) Schematic structures of two extreme cases for Ni-C and Ni-Si interfaces. Charge transfer for (b) Ni-C and (c) Ni-Si electric polarizations. The color bar from blue via yellow to red refers to areas that are positively charged, neutrally charged, and negatively charged, respectively.
Jiang et al. Nanoscale Research Letters 2012 7:238 doi:10.1186/1556-276X-7-238