Improving the conductance of carbon nanotube networks through resonant momentum exchange
Improving the conductance of carbon nanotube networks through resonant momentum exchange
复制标题
DOI：
10.1103/physrevb.89.245426
复制
发表时间：
2014-02
影响因子：
3.7
通讯作者：
R. Bell;M. Payne;A. Mostofi
中科院分区：
文献类型：
--
作者：
R. Bell;M. Payne;A. Mostofi
我们提出了一种通过提高不同手性碳纳米管（CNT）之间的电导率来提高碳纳米管（CNT）网络电导率的机制。我们一般认为，弱扰动可以通过允许动量守恒隧道效应来极大地提高管间电导。该机制通过紧束缚模型进行了验证，从而可以研究其对包含一系列手性的网络的影响。我们讨论了实际的实现，并得出结论，它可能会受到弱物理相互作用的影响，因此不需要与碳纳米管进行化学键合。
We present a mechanism to improve the conductivity of carbon nanotube (CNT) networks by improving the conductance between CNTs of different chirality. We argue generally that a weak perturbation can greatly improve the inter-tube conductance by allowing momentum-conserving tunnelling. The mechanism is verified with a tight-binding model, allowing an investigation of its impact for a network containing a range of chiralities. We discuss practical implementations, and conclude that it may be effected by weak physical interactions, and therefore does not require chemical bonding to the CNTs.