Morphological Effects on Surface-Enhanced Raman Scattering from Silver Butterfly Wing Scales Synthesized via Photoreduction
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- 作者：Yongwen Tan ; Xining Zang ; Jiajun Gu ; Dingxin Liu ; Shenmin Zhu ; Huilan Su ; Chuanliang Feng ; Qinglei Liu ; Woon Ming Lau ; Won-Jin Moon ; Di Zhang
- 刊名：Langmuir
- 出版年：2011
- 出版时间：October 4, 2011
- 年：2011
- 卷：27
- 期：19
- 页码：11742-11746
- 全文大小：836K
- 年卷期：v.27,no.19(October 4, 2011)
- ISSN：1520-5827
文摘
Through a simple room-temperature photoreduction process, this letter conformally replicates 3D submicrometer structures of wing scales from two butterfly species into Ag to generate practical surface-enhanced Raman scattering (SERS) substrates. The Ag replicas of butterfly scales with higher structural periodicity are able to detect rhodamine 6G at a low concentration down to 10<sup>鈥?sup> M, which is three orders of magnitude lower than the detectable concentration limit of using quasi-periodic Ag butterfly structures. This result presents a way to select suitable scale morphologies from 174鈥?00 species of Lepidopterans to replicate, as consumable SERS substrates with low cost and high reproducibility.