Jang Hoon-Sik, Jeon Sang Koo, Kwon Oh-Heon, Lee Seek Cheol, Kim Chang Soo, Nahm Seung Hoon
Center for Materials Measurement, Korea Research Institute of Standards and Science, Daejeon 305-340, Korea.
J Nanosci Nanotechnol. 2012 Apr;12(4):3242-6. doi: 10.1166/jnn.2012.5598.
Iron-catalyzed spin-capable multi-walled carbon nanotubes (MWCNTs) were grown on a SiO2 wafer by chemical vapor deposition, which was carried out at 780 degrees C using C2H2 and H2 gases. We fabricated a flexible transparent film using the spun MWCNTs. The MWCNT sheets were produced by being continuously pulled out from well-aligned MWCNTs grown on a substrate. The MWCNT sheet films were manufactured by simply carrying out direct coating on a flexible film or glass. The thickness of the sheet film decreased remarkably when alcohol was sprayed on the surface of the sheet. The alcohol spraying increased the transmittance and decreased the electrical resistance of the MWCNT sheet films. The sheets obtained after alcohol spraying had a resistance of -699 omega and a transmittance of 81%-85%. The MWCNT sheet films were heated by applying direct current. The transparent heaters showed a rapid thermal response and uniform distribution of temperature. In addition, we tested the field emission of the sheet films. The sheet films showed a turn-on voltage of -1.45 V/microm during field emission.
通过化学气相沉积法在二氧化硅晶圆上生长了铁催化的具有自旋能力的多壁碳纳米管（MWCNT），该过程在780摄氏度下使用乙炔和氢气进行。我们使用纺丝后的MWCNT制备了一种柔性透明薄膜。MWCNT片材是通过从在基板上生长的排列良好的MWCNT中连续拉出而制成的。MWCNT片材薄膜是通过简单地在柔性薄膜或玻璃上进行直接涂覆而制造的。当在片材表面喷洒酒精时，片材薄膜的厚度显著减小。酒精喷洒提高了MWCNT片材薄膜的透光率并降低了其电阻。喷洒酒精后得到的片材电阻为-699欧姆，透光率为81%-85%。通过施加直流电对MWCNT片材薄膜进行加热。透明加热器显示出快速的热响应和均匀的温度分布。此外，我们测试了片材薄膜的场发射。片材薄膜在场发射期间的开启电压为-1.45 V/μm。
