研究目的
Investigating the fabrication and application of PDMS-Au/Ag nanocomposite films as highly sensitive and cost-effective SERS substrates.
研究成果
PDMS-Au/Ag nanocomposites show promise as highly sensitive and cost-effective SERS substrates. Further research is needed to explore the effect of synthesis parameters on SERS enhancement and to compare performance with commercial substrates.
研究不足
The study focuses on preliminary results and does not extensively compare the performance with commercially available SERS substrates under fixed experimental conditions.
1：Experimental Design and Method Selection:
The study involves the synthesis of PDMS-Au/Ag nanocomposite films by reducing chloroauric acid or silver nitrate solution with PDMS membrane, and monitoring the plasmonic absorbance peak development in situ.
2：Sample Selection and Data Sources:
PDMS samples were prepared using SYLGARD? 184 silicone elastomer and its curing agent, with nanocomposites formed by adding HAuCl4 or AgNO3 solutions.
3：List of Experimental Equipment and Materials:
Includes SYLGARD? 184 silicone elastomer, HAuCl4, AgNO3, Avantes Avaspec 2048-4DT spectrometer, Avantes Avalight DHS halogen light source, and Renishaw 1000 micro-Raman spectrometer.
4：Experimental Procedures and Operational Workflow:
Involves preparation of PDMS samples, synthesis of nanocomposites, optical spectroscopy for real-time monitoring, and SERS measurements.
5：Data Analysis Methods:
Custom-written Matlab program for evaluating optical spectra and analysis of SERS enhancement.
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