摘要
Anisotropic metallic Nanoparticles （NPs） have unique optical properties, such as Surface Enhanced Raman Scattering （SERS） spearoscopy. In this paper, star-shaped and sphere gold NPs were prepared by seed-mediated growth and Frence methods respectively. The reaction process arid the effect of reagent in seed-mediated growth of gold naaostar particles were systematically described. After fabricaring NPs the authors test their Raman enhancement using Ch-ystal Violet （CV） moleolles apart. The experimental results indicated that star-shaped Au NPs had strtmger Raman enhancement spectrum than that of sphere Au NPs.
