期刊
RSC ADVANCES
卷 6, 期 4, 页码 2882-2887出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra22321k
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资金
- JST-CREST Phase Interface Science for Highly Efficient Energy Utilization
- World Premier International Research Center (WPI) Initiative MEXT, Japan
We report a novel approach for large-scale gold nano-cone growth by utilizing the open nanopore channels of nanoporous gold films as both the template for nano-cone growth and the delivery channel of the reduction gas through the nano-pipes. Quasi-periodic nano-cone arrays uniformly sprout on the centimeter-sized free-standing nanoporous gold films. The sharp nano-cones give rise to ultrahigh surface enhanced Raman scattering for single molecule detection from the focused electromagnetic fields at the cone apexes. The large-scale nano-cone decorated nanoporous gold films may serve as high-performance SERS substrates for wide-ranging applications in ultrasensitive instrumentation and molecule diagnostics.
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