Holey carbon TEM grid

The electrostatic sampler used a strong electric field to collect the carbon nanotubes on holey carbon TEM grids. The use of an electrostatic sampler ensured that no sampling bias occurred. The importance of sampling without bias is discussed further in Section 9.4.1. Finally, the CNTs collected were observed using a transmission electron microscope (see Section 9.4). Diameters and lengths were obtained for the nanotubes and the results were used to test the electrical mobility theory and charge expression. 

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