Measurement and Simulation of Microwave Absorber from Burned Rice Husk

Abstract

Burned rice husk is produced from the rice husk which is processed using a certain method to produce burned rice husk. The process of changing the rice husk into burned rice husk is aimed to increase the carbon content. With the increase in carbon content, the ability to absorb the micro wave increases. We choose the rice husk material because Indonesia produces 15 tons of rice husks for every rice harvest annually. Therefore, it is possible to explore the potential of rice husk and/or burned rice husk into a microwave absorber material. The material containing carbon is chosen because carbon can cause the material to become a good conductor, with low density, and low elasticity. This characteristic causes the rice husk to influence the reflection and absorption of waves. In addition, carbon also functions as a resistive material that converts the current into heat and evenly spreads around it. The assessment of rice husk as an absorber has been conducted and resulted in a conclusion that the rice husk serves as a good absorber of micro wave. With higher carbon content, it enables the burned rice husks to have much better absorber ability than the rice husk. This paper presents the measurement and simulation of burned rice husk material as microwave absorber. By comparing the ability of rice husk and burned rice husks, it is concluded that burned rice husk has better ability to absorb.