Effect of power variation in a microwave film deposition unit with different loads

A microwave film deposition unit can be designed with the use of a domestic microwave oven with a quartz tube kept inside the chamber. Air is used as the medium for the formation of plasma. The plasma induced in the quartz tube is a medium for coating the nano particles in the glass substrate. Calorimetric calibration for various heating loads under standard conditions of supply voltage, time of heating, position and quantity were done. Parameters like position of the vessel in the chamber, supply voltages to magnetron, load volume and the heating time influence the load performance. The calorimetric calibrations were carried out with varying heating loads like coconut oil, engine oil, fruit juice and water. It was observed that coconut oil absorbed maximum microwave energy whereas engine oil absorbed minimum. The study points out the differences between coconut oil and engine oil with respect to their heating characteristics under exposure to microwave energy.