ABSTRACT
Carbon nanotubes (CNTs) are a one-dimensional allotrope of graphene. Sheets of graphene are “rolled” into tubes to form well-ordered, hollow graphitic CNTs. CNTs have attracted intense interest, including in sensors and biosensors, due to their important properties, such as increased electrode surface area, fast electron transfer rate, signicant mechanical strength, and good chemical stability. CNTs’ unique combination of mechanical, thermal, and electrical properties make CNT bers or CNT threads and yarns even better candidates for multifunctional materials. Apart from good electrical and mechanical properties, CNT bers inherit the advantages of high surface area and good electrocatalytic properties of CNTs, while avoiding the potential toxicity caused by individual CNTs in the form of small particles with a high aspect ratio. Thus, CNT bers have great potential for sensing applications. In this chapter, CNT bers are compared with carbon bers, a common material used for biosensing, in their applications in biosening.
