Question #ed719
1 Answer
Vanadium dioxide, Mica
Explanation:
Vanadium dioxide (
It is a substance which is a good conductor of electricity, but a bad conductor of heat. I quote directly from the researchers at Berkley lab (who discovered this)...
"The electrons were moving in unison with each other, much like a fluid, instead of as individual particles like in normal metals."
"The coordinated, marching-band-like motion of electrons in vanadium dioxide is detrimental to heat transfer as there are fewer configurations available for the electrons to hop randomly between."
Mica and Diamond **
Mica and Diamond are one of the best conductors of heat, but are bad conductors of electricity.
In these substances, heat is conducted by the phonons** (lattice vibrations), which have a high velocity and frequency, due to the strong bonds between atoms and the symmetry of the lattice.
Visualising Phonons:
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