Patent ID: 7997791

Claim:
A temperature sensor, comprising a first electrode, a second electrode, a nanoporous material disposed between the first electrode and the second electrode, and a diffusion material which is located outside the nanoporous material and which is capable of diffusing into the nanoporous material, wherein the amount of diffusion material diffusing into the nanoporous material is dependent on the temperature to which the temperature sensor is exposed, and wherein the amount of diffusion material diffusing into the nanoporous material depends on a duration of a temperature treatment to which the temperature sensor is subjected, wherein the resistance of the nanoporous material is dependent on the amount of diffusion material in the nanoporous material, wherein the nanoporous material is configured such that the resistance can be reset to the original value by applying a suitable current or voltage, and wherein the temperature sensor is configured to determine temperature treatment data based on a determined amount of diffusion material diffused into the nanoporous material.