journal article·2011-07-26

Reductive Self-Assembling of Ag Nanoparticles on Germanium Nanowires and Their Application in Ultrasensitive Surface-Enhanced Raman Spectroscopy

Mingfa Peng, Jing Gao, Pingping Zhang, Yang Li, Xuhui Sun, Shuit-Tong Lee

Chemistry of Materials· Volume 23· Issue 14
Publisher page

Abstract

Silver nanoparticles (AgNPs) have been reductively fabricated on the hydrogen-terminated surface of germanium nanowires (GeNWs), which exhibited moderate reactivity toward the direct reduction of Ag (I) ion to metal nanoparticles in aqueous solution at room temperature. The electronic properties of the AgNPs/GeNWs system have been studied by X-ray photoelectron spectroscopy. The Ag nanoparticle-embedded germanium nanowires have been used as a unique surface-enhanced Raman scattering substrate, which could achieve the single molecule detection. The observed enhancement factor of the fabricated AgNPs/GeNWs substrate was estimated to be 10 7 .
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Research context

OpenAlex topics: Gold and Silver Nanoparticles Synthesis and Applications · Advanced biosensing and bioanalysis techniques · Quantum Dots Synthesis And Properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute of Functional Nano and Soft Materials (FUNSOM), and Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu 215123, P. R. China

Center of Super Diamond and Advanced Materials (COSDAF), and Department of Physics and Materials Science, City University of Hong Kong, Kowloon, Hong Kong SAR, China

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