title: Morphological effects on surface-enhanced Raman scattering from silver butterfly wing scales synthesized via photoreduction.
abstract: 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 SERS substrates with low cost and high reproducibility.
authors.affiliation: State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, PR China.
authors.forename: Yongwen
authors.initials: Y
authors.lastname: Tan
authors.forename: Xining
authors.initials: X
authors.lastname: Zang
authors.forename: Jiajun
authors.initials: J
authors.lastname: Gu
authors.forename: Dingxin
authors.initials: D
authors.lastname: Liu
authors.forename: Shenmin
authors.initials: S
authors.lastname: Zhu
authors.forename: Huilan
authors.initials: H
authors.lastname: Su
authors.forename: Chuanliang
authors.initials: C
authors.lastname: Feng
authors.forename: Qinglei
authors.initials: Q
authors.lastname: Liu
authors.forename: Woon Ming
authors.initials: WM
authors.lastname: Lau
authors.forename: Won-Jin
authors.initials: WJ
authors.lastname: Moon
authors.forename: Di
authors.initials: D
authors.lastname: Zhang
mesh_terms: D000818:Animals; D002080:Butterflies; D010084:Oxidation-Reduction; D010316:Particle Size; D055668:Photochemical Processes; D012235:Rhodamines / Q000032:analysis; D012834:Silver / Q000737:chemistry*; D013059:Spectrum Analysis, Raman; D013499:Surface Properties; D014921:Wings, Animal
chemical_list: D012235:Rhodamines; C026188:rhodamine 6G; D012834:Silver