Asymmetric Carbon Nanotube Dimers for Novel Sensing Applications

摘要

Abstract-In this work, we study the use of asymmetriccarbon nanotube (CNT) dimers for the contactless detectionof foreign nano-particles. Asymmetric CNT dimers create aunique field distribution, through the electromagnetic coupling,which in turn generates two distinct resonances representing thebonding and anti-bonding modes. The presence of a foreignnano-particle (NP) in the vicinity of the CNT dimer perturbsthe dimer’s field distribution and causes the bonding and antibondingresonances to shift by unequal amounts depending onthe NP location. By studying the difference in the shift of thebonding and the anti-bonding resonances, we show that theNP relative location can be reconstructed. The computationalexperiments performed in this work show how asymmetricCNT dimers can be used for novel sensing applications.