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Yongwen Tan, Jiajun Gu, Linhua Xu, Xining Zang, Dingxin Liu, Wang Zhang, Qinglei Liu, Shenmin Zhu, Huilan Su, Chuanliang Feng, Genlian Fan and Di Zhang High-Density Hotspots Engineered by Naturally Piled-Up Subwavelength Structures in Three-Dimensional Copper Butterfly Wing Scales for Surface-Enhanced Raman Scattering Detection Advanced Functional Materials 22

Article first published online: 13 FEB 2012 | DOI: 10.1002/adfm.201102948

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Piled-up hotspots, which are engineered naturally by subwavelength structures in Cu butterfly wing scales, significantly enhance the Raman signals of analytes. These results will help identify the optimal scale morphologies out of ca. 175 000 butterfly species for biotemplates to replicate for surface-enhanced Raman scattering (SERS) applications and bring affordable high-quality SERS substrates as consumables to ordinary laboratories across the world.

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