研究目的
Investigating the use of copper nanoparticle ink printed frequency selective surface (FSS) for cellular signals suppression.
研究成果
The copper nanoparticle ink printed FSS effectively attenuates cellular signals at 900 MHz when sintered at 300°C for 10 minutes in an inert atmosphere. Despite variations in measured conductivity, simulated results demonstrate good performance.
研究不足
The size limitation of the furnace used during the sintering process restricts the size of the printed FSS pattern that can be sintered, preventing experimental validation of simulated results.
1：Experimental Design and Method Selection:
The study involves designing a dipole FSS element printed on polyimide film using copper nanoparticle ink via inkjet printing. The focus is on optimizing sintering parameters (temperature and duration) to achieve conductive paths.
2：Sample Selection and Data Sources:
The FSS is printed on 0.5 mm thick Kapton Polyimide film. Electrical conductivity is measured using a two-point probes method.
3：5 mm thick Kapton Polyimide film. Electrical conductivity is measured using a two-point probes method.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: Dimatix Materials Printer for inkjet printing, digital multimeter for resistance measurement, surface profiler for thickness measurement, and Computer Simulation Technology (CST) Microwave Studio for simulation.
4：Experimental Procedures and Operational Workflow:
Printing FSS patterns, sintering at varied temperatures and durations, measuring electrical resistance and conductivity, and simulating FSS performance.
5：Data Analysis Methods:
Electrical conductivity is calculated from resistance measurements. Simulation results are analyzed to assess FSS performance in signal suppression.
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