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:
