Electrophoretic drawing of continuous fibers of single-walled carbon nanotubes

被引:9
作者
Annamalai, R [1 ]
West, JD
Luscher, A
Subramaniam, VV
机构
[1] Ohio State Univ, Dept Mech Engn, Columbus, OH 43210 USA
[2] Ohio State Univ, Chem Phys Program, Columbus, OH 43210 USA
基金
美国国家科学基金会;
关键词
D O I
10.1063/1.2134881
中图分类号
O59 [应用物理学];
学科分类号
摘要
Control over the current during electrophoretic drawing of continuous fibers of single-walled carbon nanotubes (SWCNTs) is shown to be critical in producing long fibers with specific diameters. In the process, as-produced SWCNTs are first dispersed in N,N-dimethylformamide (DMF) by sonication. A tungsten probe tip is then immersed in the SWCNT/DMF solution, and a dc bias is applied between the tip and another electrode at the bottom of the beaker containing the solution. After a dark cloud several millimeters in diameter develops around the tip, the electrode is withdrawn to form continuous macroscopic fibers of SWCNTs. The resulting fiber length and diameter are found to be principally determined by the magnitude of the current. Under constant voltage conditions where the current is allowed to vary, the fibers are short (several millimeters long) and their diameters vary drastically along their lengths. Of significance is the fact that when the current is maintained at constant values, fibers several centimeters in length with uniform diameters ranging from 26 to 42 mu m are obtained at a withdrawal rate of 0.85 mu m/s. For this withdrawal rate, long fibers (similar to 3 cm and greater) are obtained at an optimum value of the current (400 nA) using hybrid conditions where the voltage is maintained constant earlier in the process while the current is maintained constant later in the process. Control of the total current at low values during this process has the potential to produce long fibers with uniform submicron diameters.
引用
收藏
页数:6
相关论文
共 12 条
[1]   Continuous carbon nanotube composite fibers: properties, potential applications, and problems [J].
Dalton, AB ;
Collins, S ;
Razal, J ;
Munoz, E ;
Ebron, VH ;
Kim, BG ;
Coleman, JN ;
Ferraris, JP ;
Baughman, RH .
JOURNAL OF MATERIALS CHEMISTRY, 2004, 14 (01) :1-3
[2]   Experimental observation of individual single-wall nanotube species by Raman microscopy [J].
Duesberg, GS ;
Blau, WJ ;
Byrne, HJ ;
Muster, J ;
Burghard, M ;
Roth, S .
CHEMICAL PHYSICS LETTERS, 1999, 310 (1-2) :8-14
[3]   Fibers of aligned single-walled carbon nanotubes: Polarized Raman spectroscopy [J].
Gommans, HH ;
Alldredge, JW ;
Tashiro, H ;
Park, J ;
Magnuson, J ;
Rinzler, AG .
JOURNAL OF APPLIED PHYSICS, 2000, 88 (05) :2509-2514
[4]   Nanotechnology: Spinning continuous carbon nanotube yarns - Carbon nanotubes weave their way into a range of imaginative macroscopic applications. [J].
Jiang, KL ;
Li, QQ ;
Fan, SS .
NATURE, 2002, 419 (6909) :801-801
[5]  
Jones T.B., 2005, Electromechanics of particles
[6]   Separation of metallic from semiconducting single-walled carbon nanotubes [J].
Krupke, R ;
Hennrich, F ;
von Löhneysen, H ;
Kappes, MM .
SCIENCE, 2003, 301 (5631) :344-347
[7]   Gas-phase catalytic growth of single-walled carbon nanotubes from carbon monoxide [J].
Nikolaev, P ;
Bronikowski, MJ ;
Bradley, RK ;
Rohmund, F ;
Colbert, DT ;
Smith, KA ;
Smalley, RE .
CHEMICAL PHYSICS LETTERS, 1999, 313 (1-2) :91-97
[8]   Synthesis of single-walled carbon nanotubes in vibrationally non-equilibrium carbon monoxide [J].
Plönjes, E ;
Palm, P ;
Viswanathan, GB ;
Subramaniam, VV ;
Adamovich, IV ;
Lempert, WR ;
Fraser, HL ;
Rich, JW .
CHEMICAL PHYSICS LETTERS, 2002, 352 (5-6) :342-347
[9]   Films and fibers of oriented single wall nanotubes [J].
Poulin, P ;
Vigolo, B ;
Launois, P .
CARBON, 2002, 40 (10) :1741-1749
[10]   Assembly of ID nanostructures into sub-micrometer diameter fibrils with controlled and variable length by dielectrophoresis [J].
Tang, J ;
Gao, B ;
Geng, HZ ;
Velev, OD ;
Qin, LC ;
Zhou, O .
ADVANCED MATERIALS, 2003, 15 (16) :1352-+