Journal
LANGMUIR
Volume 27, Issue 19, Pages 11742-11746Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la202445p
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Funding
- 973 National Project [2011CB922200]
- Shanghai Science and Technology Committee [10JC1407600]
- MOST of China [2009DFA52410, 2010DFA52550]
- Sino-Finland International Program of Shanghai [09520703400]
- Shanghai Jiao Tong University
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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(-9) 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 174 500 species of Lepidopterans to replicate, as consumable SEAS substrates with low cost and high reproducibility.
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