Non-traditional processing of carbon nanotubes: A review

Abstract In recent years, carbon nanotubes(CNTs) have begun to attract attention in the fields of field emission, nanoelectronic devices, nano machines and composite reinforced materials. But the traditional processing methods for cutting these increase tool wear. However, non-traditional processing can be used to machine materials of any hardness and strength. In this paper, the research trends of non-traditional processing of CNTs are critically reviewed. First, this study introduces the application of CNTs and their development history. Second, the surface morphology, purification and growth effects of laser-processed CNTs are summarised, these are analysed and discussed. Subsequently, the effects of ultrasonic parameters and other external parameters on the diormance of ultrasonically processed CNTs are analysed. Next, the effects of electrical and non-electrical parameters on the surface morphology of CNTs processed by micro-electro-discharge machining( μ EDM) are compared, and a summary analysis is presented. In addition, the research on the improvement of the performance of CNTs by electrochemical machining(ECM) is reviewed and prospected. Simultaneously, different non-traditional processing of CNTs is discussed. Finally, the most recent progress in non-traditional processing of CNTs is described, and the future trends, which may potentially guide subsequent research studies, are predicted.