Advances in synthesis and Application of carbon nanotube materials

Abstract

The main obstacle to wider application of carbon nanotubes (CNT) is their nature to grow in bundles resembling "spaghetti" type morphology. This paper presents recent results in catalytic synthesis of centimeter long CNT arrays by CVD. The role of the catalyst design on the substrate surface and its impact on the length of the oriented CNT will be revealed. Additionally, characterization of the arrays by ESEM, HRTEM, Micro-Raman Spectroscopy, and TGA will be discussed. Current research efforts to scale up the cultivated process, and to develop the manufacturing tools and methods that industry needs to "mass produce" aligned CNTs will be reported. The paper also illustrates exiting applications of the CNT arrays related to their unique properties. Recent advances in the development of "Black Cotton TM", which is centimeter long CNT arrays grown on large substrates, are discussed. Applications of nanotechnology under development in our lab include: spinning Black Cotton into thread, use of CNT arrays for manufacturing actuators, biosensors, and for thermal management. © 2008 MS&T'08®.