【摘要】 理论与实验研究发现碳纳米管在流体中存在一种电子拖曳现象,据此原理进行了多壁碳纳米管流体速度传感器的实验研究。实验中所用的碳纳米管是用热灯丝化学气相沉积法制备的。实验结果表明流动液体在多壁碳纳米管中诱导出的电流随流体速度的增加而增加,并与液体中离子浓度和温度密切相关。在室温下,当流体速度从0增加到10-1m/s时,电流从0增加到51μA。碳纳米管中这种效应可作为一种新型的流体速度传感器。并对所得的结果进行了讨论。更多还原

【Abstract】 The theoretical and experimental studies have found that there was a carbon nanotube electron drag in flowing liquids,and the flow velocity sensors based on multiwalled carbon nanotubes were experimentally investigated by the principle.The carbon nanotubes in this study were fabricated by hot filament chemical vapor deposition.The experimental results showed that the induced current increased with increasing liquid flowing velocity,and closely depended on the ion concentration in liquid and temperature.At the room temperature the current increased from 0 to 51 μA when the liquid flowing velocity increased from 0 to 10^-1 m/s.This effect in carbon nanotubes can be used for a new flow velocity sensor.The results obtained were also discussed.更多还原