title: Selective fabrication of quasi-parallel single-walled carbon nanotubes on silicon substrates.
abstract: We have fabricated single-walled carbon nanotube (SWNT) arrays, about 85% of which are semiconducting. Fe nanoparticles, which were used as a catalyst, were produced simply and cheaply from Wistar rat blood. The SWNT arrays generally grow parallel to the gas flow. Hundreds of devices with varying SWNT density in the channel were measured and we found that the on-off ratio for such devices with the quasi-parallel, semiconducting-rich SWNTs in the channel can be easily increased via an electrical breakdown method. Thus, large-scale fabrication of FET devices is possible simply by controlling the width of the channel. Finally, we determined that the mobility of the devices reached 3900 cm(2) V(-1) s(-1).
authors.affiliation: Department of Physics, Tsinghua University, Beijing, People's Republic of China.
authors.forename: Xueshen
authors.initials: X
authors.lastname: Wang
authors.forename: Qunqing
authors.initials: Q
authors.lastname: Li
authors.forename: Gang
authors.initials: G
authors.lastname: Zheng
authors.forename: Yi
authors.initials: Y
authors.lastname: Ren
authors.forename: Kaili
authors.initials: K
authors.lastname: Jiang
authors.forename: Shoushan
authors.initials: S
authors.lastname: Fan
mesh_terms: D000818:Animals; D055664:Electrochemical Techniques; D004912:Erythrocytes / Q000737:chemistry; D007501:Iron / Q000097:blood / Q000737:chemistry* / Q000302:isolation & purification; D053768:Metal Nanoparticles / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D036103:Nanotechnology / Q000379:methods*; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure; D051381:Rats; D017208:Rats, Wistar; D012825:Silicon
chemical_list: D037742:Nanotubes, Carbon; D007501:Iron; D012825:Silicon