A re-entrant cavity for microwave-enhanced chemistry.
The electromagnetic aspect of microwave dielectric heating is analyzed. It is concluded that a re-entrant cavity may supply high electric field component that is theoretically favorable efficient microwave absorption process in a small liquid or solid chemical sample. A re-entrant cavity has been designed using both finite difference time domain and finite element time domain methods and constructed with a PC-driven control and power supply unit. The field distribution in the sample as well as Q-values for a water-loaded cavity are calculated and measured. Good agreement between designed and measured quantities were found.
Department of Physics, Stockholm University, Stockholm, Sweden.
Shirzad
S
Kalhori
Nils
N
Elander
Jan
J
Svennebrink
Sharon
S
Stone-Elander
D002623:Chemistry Techniques, Analytical / Q000295:instrumentation* / Q000379:methods; D017076:Computer-Aided Design; D004574:Electromagnetic Fields; D004867:Equipment Design; D019544:Equipment Failure Analysis / Q000379:methods*; D020342:Finite Element Analysis; D006361:Heating / Q000295:instrumentation* / Q000379:methods; D008872:Microwaves; D011874:Radiometry / Q000379:methods*