Abstract Effective surface-enhanced Raman scattering (SERS) substrate with hierarchical nanostructure is successfully fabricated by architecturing Ag nanoparticles on the surface of one dimensional (1-D) semiconducting ZnO nanospikes. The influence of anisotropic growth and strain in the ZnO nanostructures through microwave treatment with the different time interval of microwave exposure. Based on the obtained physiochemical characterization results, the Ag–ZnO hierarchical nanostructures facilitates to modify the band structure due to the formation of heterojunction and thus drastically improves the SERS sensing capacity towards the various chemically harmful species. It is proposed that the anisotropic growth and strain-induced effect would be a unique strategy for designing and development of high-performance chemical and real-time molecular sensors.

中文翻译：

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微波合成法制备 Ag-ZnO 分级纳米结构的各向异性生长和应变诱导的可调光学特性

摘要 通过在一维 (1-D) 半导体 ZnO 纳米尖峰表面上构建 Ag 纳米粒子，成功地制造了具有分级纳米结构的有效表面增强拉曼散射 (SERS) 衬底。不同微波照射时间间隔微波处理对ZnO纳米结构各向异性生长和应变的影响。基于获得的理化表征结果，Ag-ZnO 分级纳米结构由于异质结的形成而有助于改变能带结构，从而显着提高对各种化学有害物质的 SERS 传感能力。