研究目的
Investigating the practical utility of graphene at microwave frequencies through the preparation and analysis of graphene thick films deposited by screen printing.
研究成果
Graphene films show homogeneous dispersion and lower surface roughness at higher concentrations, with negligible agglomerates, making them suitable for RF applications at microwave frequencies.
研究不足
The study is limited to microwave frequencies and specific graphene concentrations; further optimization may be needed for other frequencies or applications.
1：Experimental Design and Method Selection:
Graphene thick films with concentrations of 12.5 wt.%, 25 wt.%, and 33 wt.% were prepared using screen printing. Surface morphology was analyzed using SEM and AFM. Films were printed between copper electrodes on an FR-4 substrate, and scattering parameters were measured.
2：5 wt.%, 25 wt.%, and 33 wt.% were prepared using screen printing. Surface morphology was analyzed using SEM and AFM. Films were printed between copper electrodes on an FR-4 substrate, and scattering parameters were measured.
Sample Selection and Data Sources:
2. Sample Selection and Data Sources: Graphene films with specified concentrations; data from SEM, AFM, and scattering parameter measurements.
3：List of Experimental Equipment and Materials:
Screen printing equipment, SEM, AFM, FR-4 substrate, copper electrodes.
4：Experimental Procedures and Operational Workflow:
Prepare graphene ink, screen print films, analyze surface morphology with SEM and AFM, print films on substrate, measure scattering parameters.
5：Data Analysis Methods:
Analysis of surface roughness, dispersion, and scattering parameters.
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