According to the intracellular electromanipulation model, bacteria can be killed at as high as 10 6 V/m electrical fields on microwave band. We designed and constructed a modified microwave coaxial cavity resonator for liquid sterilization. The cavity could concentrate the field on a very small area, and the liquid can pass it in milliseconds. The bacteria can be killed by the very high field, but with a slight temperature increase. The designed resonator is simulated and analyzed by

more »

... etic simulation code. The results indicated that when the input power reached 100 W, the electric field on the area of liquid can reach 10 6 V/m. Preliminary experimental results indicated that when the input power was 100 W, the bactericidal rate was > 90%, and the temperature of the liquid only increased 8.6 • C.T M