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Carbon nanotubes (CNTs) are cylindrical molecules that comprise sheets of single-layer carbon atoms like graphene rolled up. CNTs can be either single or double-layered. CNTs have many remarkable properties and applications, but we will read mostly about their use in the health sector because of small dimensions and their high surface area, which has the capability of conjugating or absorbing with a broad range of diagnostic and therapeutic agents. Considering these intriguing pr …

Carbon nanotubes (CNT) are the allotropes of carbon having a cylindrical nanostructure. Carbon nanotubes have two main types: Single wall Nanotubes (SWNT) and Multiwall carbon nanotube (MWNT). CNTs have extraordinary mechanical and electrical properties and thermal conductivity. Carbon Nanotubes have many other extraordinary properties also, due to which they are of great importance in sectors such as electronics, nanotechnology, optics, and many other sectors. Therefore, this article …

Double-walled carbon nanotubes (DWCNTs) are formed by two concentric SWCNTs and are therefore called "double-walled" nanotubes. The diameter of the DWCNTs is normally greater than that of the SWNTs, and it grows with the number of walls, being able to reach up to a few tens of nanometers. They have a variety of applications in different sectors and they will be discussed in detail in this article. Moreover, the structure and properties of DWCNTs are also discussed briefly.Structure of …