Heating Effect of the Electromagnetic Interaction with Metallic Microparticles

The heating effect of electromagnetic radiation is of practical interests because of the possibility of heating small particles like metallic microparticles, e.g. metallic microparticles, opening prospects for many applications such as drug delivery and remote triggering of electromagnetic microsystems. In this work, the interaction of electromagnetic waves with metallic microparticles has been investigated using numerical simulations. COMSOL Multiphysics is used to demonstrate the thermal effects of the electromagnetic radiation at 2.4 GHz on metallic microparticles of iron powder, iron, aluminum, copper and silver. The results demonstrated that the rise in temperature around the microparticles is proportional to the input power. The total rise in maximum temperature was 33.83 K near the iron powder microparticles at 1W power in 30 minutes. Further investigation also revealed the contribution of both the electric and magnetic field components of the electromagnetic field towards the total heating effect.