利用导电型原子力显微镜对大范围碳纳米管(CNT)网络的导电性能进行成像观察.研究发现:在几十微米的成像范围内,每根CNT本身的电阻远小于CNT之间的接触电阻,以致于在电压偏置的网络中不同的CNT呈现电位不同的等位体;CNT的导电性能虽不因与其他CNT的交叠接触而改变,但是如果缠绕成束,则半导体性CNT趋于呈现金属性CNT的导电特征. The conductive properties of a wide range of carbon nanotubes (CNTs) networks were observed using a conductive atomic force microscope and found that within the imaging range of tens of micrometers, the resistance per CNT itself is much smaller than the contact resistance between CNTs Different CNTs exhibit equipotentials with different potentials in the voltage-biased networks; the conductivity of the CNTs does not change due to overlapping contact with other CNTs, but if entangled in bundles, the semiconducting CNTs tend to exhibit metal Conductive characteristics of CNTs.