Metal that conducts electricity but not heat found:
Electrons in vanadium dioxide can conduct electricity without conducting heat.
Which may pave the way for systems that convert waste heat from engines and appliances into electric power.
It could lead to a wide range of applications, such as thermoelectric systems that convert waste heat from engines and appliances into electricity.
Wiedemann-Franz Law: For most metals, the relationship between electrical and thermal conductivity is governed by this law:
The law states that good conductors of electricity are also good conductors of heat. But that is not the case for metallic vanadium dioxide.
Vanadium dioxide is already noted for its unusual ability to switch from an insulator to a metal when it reaches 67 degrees Celsius.