Selective synthesis of three-dimensional ZnO@Ag/SiO<sub>2</sub>@Ag nanorod arrays as surface-enhanced Raman scattering substrates with tunable interior dielectric layer<xref rid="cpb_28_12_124204fn1" ref-type="fn">*</xref><fn id="cpb_28_12_124204fn1"><label>*</label><p>Project supported by the Fund from the Science and Technology Department of Jilin Province, China (Grant No. 20170520108JH), the Beihua University Youth Nurtural Fund, China (Grant No. 2017QNJJL15), the Beihua University PhD Research Start-up Fund, China (Grant No. 202116140), and the Undergraduate Innovation Project, China (Grant No. 220718100).</p></fn>

Selective synthesis of three-dimensional ZnO@Ag/SiO₂@Ag nanorod arrays as surface-enhanced Raman scattering substrates with tunable interior dielectric layer**

Project supported by the Fund from the Science and Technology Department of Jilin Province, China (Grant No. 20170520108JH), the Beihua University Youth Nurtural Fund, China (Grant No. 2017QNJJL15), the Beihua University PhD Research Start-up Fund, China (Grant No. 202116140), and the Undergraduate Innovation Project, China (Grant No. 220718100).

Mu Jia-Jia^{1, †}, He Chang-Yi¹, Sun Wei-Jie², Guan Yue¹

(a) TEM image of an individual ZnO@Ag/SiO₂ nanorod with 67-s inner layer Ag sputtering time and 8-s SiO₂ PECVD growth time. (b) Magnified TEM image showing 2-nm-thick SiO₂ dielectric layer. (c) The side view SEM micrograph of ZnO nanorods coated with 10-nm-thick Ag layer and 2-nm-thick SiO₂ layer. (d)–(h) Dark-field scanning TEM and EDXS elemental mapping.