利用了三点弯曲法研究了碳纳米管膜压阻效应.研究中所用的碳纳米管是用化学气相沉积法合成的.实验结果表明,碘掺杂和未掺杂的碳纳米管膜的压阻因子在500微形变和室温下分别为350和65,超过了单晶硅和多晶硅的压阻因子.同时还发现化学处理还能进一步增强碳纳米管膜的压阻效应.碘掺杂碳纳米管膜的压阻效应也许是由于在形变时带隙变化所致,而未掺杂碳纳米管压阻效应主要是由管之间接触电阻变化引起的.碳纳米管压阻效应可用于旋转速度的测量.
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