研究目的
Investigating the terahertz absorption characteristics in multilayer graphene/polymer structures to explore potential applications in terahertz absorption devices.
研究成果
The average terahertz transmission can be actively controlled by changing the pump power or the layer number of graphene, which exhibits potential applications in the terahertz absorption devices.
研究不足
The study is limited to the terahertz absorption characteristics of single-layer and multilayer graphene/PMMA structures under specific experimental conditions. Further research is needed to explore the effects of different materials and structures.
1：Experimental Design and Method Selection:
The study involves fabricating single-layer graphene and multilayer graphene/PMMA structures and measuring their terahertz transmission characteristics under different pump powers using a terahertz time domain spectroscopy system.
2：Sample Selection and Data Sources:
Graphene samples were prepared by chemical meteorological deposition and characterized using Raman spectroscopy.
3：List of Experimental Equipment and Materials:
Terahertz time domain spectroscopy system, 980 nm laser, PMMA solution, ferric chloride solution, quartz substrate.
4：Experimental Procedures and Operational Workflow:
The graphene samples were pumped by the 980 nm laser with different powers, and the terahertz transmission was measured.
5：Data Analysis Methods:
The time-domain and frequency-domain spectra of the terahertz transmission were analyzed to determine the absorption characteristics.
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