- 學位論文
以微波加熱奈米碳管製作場發射元件及二維奈米陣列於軟性基板之研究
On fabrication of field emission devices and two-dimensional nanoarrays on flexible substrates by microwave heating of carbon nanotubes
若您是本文的作者，可授權文章由華藝線上圖書館中協助推廣。
摘要
Abstract CNTs can be fast and selectively heated by microwave irradiation and PS nanospheres can be arranged to form a 2D array are the two core techniques practiced in this thesis. The CNTs used in this work were commercial CNT powders and CNTs synthesized by the author with microwave heating chemical vapor deposition (CVD) or thermal CVD by Professor Tai’s group. Fluffy CNT films and vertically aligned CNT films grown by thermal chemical vapor deposition (CVD) can be directly bonded on thermoplastic polymers by microwave heating. In this way, CNTs heated by microwave irradiation can be used as a “solder” to join two pieces of polymer sheet together. Screen printing was used to print a large area of CNT network on a polymer substrate. Commercial SWCNT and MWCNT powders were mixed with a dispersant solution (S-20000) by three-roller milling to form uniform CNT pastes for screen printing. After the printed CNT network was fixed on polymer by microwave heating, dispersant was removed by ultrasonic bathing. A field emission device made of printed CNTs which work both as conductors and field emitters was demonstrated. A low turn-on field of 1.0 V/μm at the current density of 10 μA/cm2 was achieved from SWCNT networks. To reduce the screening effect of the CNTs network, the using of a meshed cover attached by microwave heating again to the CNT network was studied. Two different kinds of meshed covers were used to attach to the continuous CNT network. The first one is a 3
參考文獻
2. A. Krishnan, E. Dujardin, T. W. Ebbesen, P. N. Yianilos, and M. M. J. Treacy, Physical Review B, 58, 14013 (1998).
4. S. Berber, Y. K. Kwon, and D. Tomanek, Phys. Rev. Lett., 84, 4613 (2000).
11. H. J. Jeong, H. K. Choi, G. Y. Kim, Y. Song, Y. Tong, S. C. Lim, and Y. H. Lee, Carbon, 44, 2689 (2006).
15. M. S. P. Shaffer, A. H. Windle, Adv. Mater., 11, 937 (1999).
18. A. Wadhawan, D. Garrett, and J. M. Perez, Appl. Phys. Lett., 83, 2683 (2003).