Size-dependent optical properties of Au nanorods

作     者：S.L.Smitha K.G.Gopchandran N.Smijesh Reji Philip 

作者机构：Department of OptoelectronicsUniversity of KeralaThiruvananthapuram-695 581India St.Joseph's College for WomenAlappuzha-688 001India Raman Research InstituteC.V.Raman AvenueSadashivanagarBangalore 560080India 

出 版 物：《Progress in Natural Science:Materials International》 (自然科学进展·国际材料(英文))

年 卷 期：2013年第23卷第1期

页      面：36-43页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：University Grants Commission  New Delhi for providing financial assistance by granting major research project 

主　　题：Au nanorods SERS Crystal violet Z-scan Nonlinear absorption Optical limiting 

摘      要：In the fast evolving field of nanoscience and nanotechnology,where size and shape are crucial in deciding the optoelectronic properties of nanomaterials,the understanding of size and shape dependent behavior is of direct relevance to device *** study reports the synthesis of Au nanorods with well controlled aspect ratios,and the influence of the aspect ratio on the surface enhanced Raman scattering(SERS) activity using crystal violet(CV) as the probe *** influence of pH and the concentrations of reducing agent and Ag ions in controlling the aspect ratio of gold nanorods are also *** structural and optical properties of the synthesized samples have been characterized by transmission electron microscopy(TEM) and UV-visible absorption *** nonlinear optical(NLO) transmission of the Au nanorods investigated using the open aperture Z-scan technique revealed the absorption saturation followed by an optical limiting behavior,which may find potential applications in optoelectronic nanodevices.