The maximum operation temperature of a heater is a very important factor for conserving the quality and performance of the heater. Experimentally, it is difficult, expensive and time-consuming to measure the temperature field distribution of materials, but numerical simulation can easily solve such problems.
Kim Yong Il, a researcher at the Nano Physics Engineering Institute, has found through a simulation that the maximum operation temperature of a laser-induced graphene (LIG) heater with a 1.0cm2 heated area which is written directly on a polyimide film is about 225℃ at an electrical power density of 1.4W/cm2 and a response time of 8s.
The numerical simulation was computed on COMSOL Multiphysics 5.3. He produced a 3D finite element model and boundary conditions of a heat conduction equation in order to simulate the temperature field distribution of an LIG heater by electrical power.
The simulation results were in agreement with the experimental results of previous researches.
The simulation showed that the maximum operation temperature of an LIG heater which is written directly on exposed polyimide substrate can be predicted at any power density and response time without any experiments.
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