研究目的
To describe the range of applications of GaN-based platforms for trace detection and identification of biological and chemical agents using SERS technique.
研究成果
Nanostructured GaN platforms are promising for SERS measurements of chemical and biological analytes, offering high chemical inertness and resistance to high temperatures. The study demonstrates the potential for broad applications in trace detection and identification.
研究不足
The study focuses on specific analytes (Fentanyl and Bacillus Atrophaeus spores) and may not cover the full range of potential applications. The enhancement factor and reproducibility may vary with different nanostructures and metal coatings.
1：Experimental Design and Method Selection:
The study involves the use of GaN-based platforms for SERS applications, focusing on the nanostructuring of GaN surfaces and the deposition of plasmonic metals.
2：Sample Selection and Data Sources:
Hetero-epitaxial Si-doped n-type GaN on sapphire wafers are used as the starting material.
3：List of Experimental Equipment and Materials:
Includes a Quorum Q150S sputter coater for sputtering gold or gold-silver alloy, SEM and TEM for examination, and a confocal Raman microscope for SERS measurements.
4：Experimental Procedures and Operational Workflow:
Involves etching GaN to form nanostructures, sputtering metal layers, and performing SERS measurements on analytes like Fentanyl and Bacillus Atrophaeus spores.
5：Data Analysis Methods:
SERS spectra are analyzed to identify and quantify the presence of specific analytes.
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