期刊
NANOTECHNOLOGY
卷 21, 期 49, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/21/49/495601
关键词
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资金
- NSFC [10674063, 10974092, 90606002]
- National Basic Research Program of China (973 Program) [2009CB930501]
- Hi-tech Research and Development Program of China [2006AA03Z316]
We report a novel method for fabricating silver nanoparticle assemblies with a featured gradient of spatial organizations. The unique step is to generate a gradient of deposit mass by dynamical deposition on a mask-covered substrate with a collimated cluster beam in oblique incidence. Then such gradient can be translated to the gradients of sizes or number densities of the nanoparticles separately, depending on the nature of the substrate surface. Multiscale gradients are implemented from mesoscopic to macroscopic. One-chip rapid detection of the optimal structure for surface enhanced Raman scattering (SERS) is achieved on the gradient assembly with particle number densities.
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