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Formation of highly conductive composite coatings and their applications to broadband antennas and mechanical transducer

机译:高导电复合涂层的形成及其在宽带天线和机械换能器中的应用

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摘要

Tight networks of interwoven carbon nanotube bundles are formed in our highly conductive composite. The composite possesses properties suggesting a two-dimensional percolative network rather than other reported dispersions displaying three-dimensional networks. Binding nanotubes into large but tight bundles dramatically alters the morphology and electronic transport dynamics of the composite. This enables it to carry higher levels of charge in the macroscale leading to conductivities as high as 1600 S/cm. We now discuss in further detail, the electronic and physical properties of the nanotube composites through Raman spectroscopy and transmission electron microscopy analysis. When controlled and used appropriately, the interesting properties of these composites reveal their potential for practical device applications. For instance, we used this composite to fabricate coatings, which improve the properties of an electromagnetic antenna/amplifier transducer. The resulting transducer possesses a broadband range up to GHz frequencies. A strain gauge transducer was also fabricated using changes in conductivity to monitor structural deformations in the composite coatings.
机译:在我们的高导电复合材料中形成了紧密交织的碳纳米管束网络。该复合材料具有暗示二维渗透性网络的特性,而不是显示三维网络的其他报道的分散体。将纳米管粘合成大而紧密的束会极大地改变复合材料的形态和电子传输动力学。这使它能够在宏观尺度上携带更高水平的电荷,从而导致电导率高达1600 S / cm。现在,我们通过拉曼光谱和透射电子显微镜分析来进一步详细讨论纳米管复合材料的电子和物理性能。当适当地控制和使用时,这些复合材料的令人感兴趣的特性表明它们在实际设备应用中的潜力。例如,我们使用这种复合材料来制造涂层,从而改善了电磁天线/放大器换能器的性能。所得的换能器具有高达GHz频率的宽带范围。还使用电导率的变化来制造应变仪换能器,以监测复合涂层中的结构变形。

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  • 来源
    《Journal of Materials Research》 |2010年第9期|P.1741-1747|共7页
  • 作者单位

    Institute for NanoEnergy, Department of Physics, University of Houston, Houston, Texas 77004;

    rnDepartment of Physics, King Faisal University, Al-Ahsa 31982, Kingdom of Saudi Arabia;

    rnInstitute for NanoEnergy, Department of Physics, University of Houston, Houston, Texas 77004;

    rnOffice for the Vice Chancellor of Research, University of Houston, Houston, Texas 77004;

    rnDepartment of Electrical Engineering, University of Houston, Houston, Texas 77004;

    rnDepartment of Physics, Wake Forest University, Winston-Salem, North Carolina 27109;

    rnDepartment of Physics, Wake Forest University, Winston-Salem, North Carolina 27109;

    rnDepartment of Materials Engineering, Rice University, Houston, Texas 77005;

    rnDepartment of Materials Engineering, Rice University, Houston, Texas 77005;

    rnDepartment of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803;

    rnInstitute for NanoEnergy, Department of Physics, University of Houston, Houston, Texas 77004;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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