Abstract In this paper, Ag nanoparticles were deposited on Ag@cicada wing array by using the cicada wings as templates to study its optical properties, including surface enhanced Raman scattering (SERS), polarization and surface enhanced fluorescence (SEF). The nanogaps between adjacent conical protrusion can be well dominated by adjusting the sputtering time and the optimal substrate AgNPs@Ag@cicada wing arrays have a noteworthy enhancement of SERS signal. Characterization of the prepared optimal substrate certified that it possesses the excellent SERS performances. Basically consistent SERS signal strength at the different polarization angles of the optimal substrate indicates that its polarization-independence. The SEF spectra shows that the optimal substrate has a slightly lower and unstable enhancement at this initial stage of repeated examination due to the weak adhesion between the Ag@cicada wing arrays and Ag nanoparticles. The outstanding optical properties indicate that it has enormous potential in the label-free detection and biological analytes determination.

中文翻译：

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Ag纳米粒子沉积的Ag@cicada翼基板的光学特性

摘要 本文以蝉翼为模板，将银纳米粒子沉积在Ag@cicada 翼阵列上，研究其光学特性，包括表面增强拉曼散射（SERS）、偏振和表面增强荧光（SEF）。通过调整溅射时间可以很好地控制相邻锥形突起之间的纳米间隙，并且最佳衬底 AgNPs@Ag@cicada 翼阵列具有显着的 SERS 信号增强。制备的最佳基材的表征证明其具有优异的 SERS 性能。最佳基板不同偏振角下的SERS信号强度基本一致，表明其偏振无关。SEF 光谱表明，由于 Ag@cicada 翼阵列和 Ag 纳米粒子之间的弱粘附，最佳基材在重复检查的初始阶段具有略低且不稳定的增强。出色的光学特性表明它在无标记检测和生物分析物测定方面具有巨大的潜力。