期刊
ACS APPLIED MATERIALS & INTERFACES
卷 2, 期 11, 页码 3333-3339出版社
AMER CHEMICAL SOC
DOI: 10.1021/am100758k
关键词
silver nonoparticle; surfact-enhanced Raman scattering; nanoparticle assembly; porous alumina membrane
资金
- DARPA
- NSF-CBET
- NDSEG
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [0930781] Funding Source: National Science Foundation
We demonstrate the in situ growth of silver nanoparticles in porous alumina membranes (PAMs) for use as a surface-enhanced Raman scattering (SERS) detection substrate. This fabrication method is simple cost-effective, and fast, while providing control over the size of silver nanoparticles through the entire length of the cylindrical nanopores with uniform particle density inside the pores unachievable by the raditional infiltration technique. The in situ growth of silver nanoparticles was conducted from electroless-deposited nanoscale seeds on the interior of the PAM and resulted in the formation of numerous hot spots, which facilitated significantly higher SERS enhancement for these substrates compared with previously reported porous substrates.
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