4Zeng J H, Yang J, Lee J Y, et al. Preparation of carbon-supported core-shell Au-Pt nanoparticles for methanol oxidation reaction: The promotional effect of the Au core [J].J Phys. Chem. B, 2006, 110 (48): 24606-24611.
5Mallin M P, Murphy C J. Solution-phase synthesis of sub-10 am Au-Ag alloy nanoparticles[J]. Nano Letters, 2002, 2( 11 ): 1235-1237.
6Wang C G, Ma Z F, Wang T G, et al. Synthesis, assembly, and biofunctionalization of silica-coated gold nanorods for colorimetdc biosensing[J].Adv. Funct. Mater, 2006, 16 (13): 1673-1678.
7Tang D P, Yuan R, Chai Y Q. Ligand-functionalized core/shell Ag@Au nanoparticles label-free amperometric immun-biosensor[J]. Biotechnology and Bioengineering, 2006, 94 (5): 996-1004.
8Hu J W, Li J F, Ren B, et al. Palladium-coated gold nanoparticles with a controlled shell thickness used as surface-enhanced Raman scattering substrate[J]. J. Phys. Chem. C, 2007, 111 (3): 1105-1112.
9Baer R, Neuhauser D, Weiss S. Enhanced absorption induced by a metallic nanoshell [J]. Nano Lett., 2004, 4 ( 1 ): 85-88.
10Xiang J, Lu W, Hu Y J, et al. Ge/Si nanowire heterostructures as high-performance field-effect transistors[J]. Nature, 2006, 441: 489-493.