| Summary: | 碩士 === 國立中興大學 === 物理學系所 === 99 === This study experimentally study the microwave transmission through nano-materials assembled on co-planar waveguide(CPW) substrates. Firstly the measurement platform utilizing CPW substrates was improved by reducing the resistance of CPW signal line by plating, reducing the dielectric loss by using sapphire substrates, shortening the length of the CPW signal line, and using ceramic substrate in the adapter. Next, nano-materials, such as carbon nanotubes, conductive organic molecules and gold nanoparticles were assembled onto the CPW substrates for measurement of microwave transmission properties. The S-parameters and DC resistances of the samples were measured by varying temperature between room temperature and 77K. The results conclude that the microwave transmission reduces as the resistance shunting the signal line and ground plane reduces. Similar results can be simulated the experimental systems by using the software, Advanced Design System.
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