1. Problems...
... is the Siemens (S = -1). The unit of conductivity is S m-1. FIGURE 1 Conductivity of conductive polymers compared to those of other materials, from quartz (insulator) to copper (conductor). Polymers may also have conductivities corresponding to those of semiconductors. Conductivity depends on the number density of charge carriers (number of electrons n) and how fast they can move in the material (mobility µ): ? = n µ e (3) where -e is ... both have mobile electrons and are, when doped, highly anisotropic metallic conductors. The conductivity is about one million times greater in the p...
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