Koratkar N, Modi A, Kim J, Wei B Q, Vajtai R, Talapatra S, Ajayan P M
Department of Mechanical, Aerospace and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, USA.
J Nanosci Nanotechnol. 2004 Jan-Feb;4(1-2):69-71. doi: 10.1166/jnn.2004.051.
The influence of electric fields on carbon nanotubes is experimentally demonstrated. Alignment of nanotubes along field lines, directed motion of nanotubes between electrodes separated by several thousand micrometers, and impressive solid-state actuation behavior of nanotube-embedded structures are demonstrated, taking into account the polarization and charging of the nanotubes. These effects are reported for long strands of nanotubes, nanotubes dispersed on substrates, and nanotube-embedded polymer strips. The relative magnitude of the field responsible for polarization and directed motion was found to be dependent on the morphology of the nanotubes used. These observations may foreshadow novel electromechanical applications for nanotube elements.
通过实验证明了电场对碳纳米管的影响。考虑到碳纳米管的极化和充电情况，展示了纳米管沿电场线排列、在相隔数千微米的电极之间的定向运动以及嵌入纳米管结构令人印象深刻的固态驱动行为。这些效应在长链纳米管、分散在基底上的纳米管以及嵌入纳米管的聚合物条带上均有报道。发现导致极化和定向运动的电场相对强度取决于所使用纳米管的形态。这些观察结果可能预示着纳米管元件的新型机电应用。
