Title :
A new method developed in measuring the dielectric constants of metallic nanoparticles by a microwave double-cavity dielectric resonator
Author :
Liu, J.H. ; Chen, C.L. ; Lue, H.T. ; Lue, J.T.
Author_Institution :
Nat. Tsing Hua Univ., Hsinchu, Taiwan
fDate :
5/1/2003 12:00:00 AM
Abstract :
A microwave double dielectric resonator is implemented to measure the dielectric constants of nano-metallic powders. The metallic nanoparticles prepared by vacuum evaporation in inert gas are collected and mixed with alumina powder to fill the inner hole of a sapphire disc by which the resonant frequency and Q factor are measured at the TE/sub 011/ mode to derive the complex dielectric constant.
Keywords :
Q-factor; cavity resonators; dielectric resonators; microwave measurement; nanoparticles; permittivity measurement; Al/sub 2/O/sub 3/; Q-factor; alumina powder; dielectric constant measurement; inert gas; metallic nanoparticles; microwave double-cavity dielectric resonator; resonant frequency; sapphire disc; vacuum evaporation; Dielectric constant; Dielectric measurements; Frequency measurement; Microwave measurements; Microwave theory and techniques; Nanoparticles; Powders; Q factor; Q measurement; Resonant frequency;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2003.811668
