Title :
Microwave artificially structured periodic media microfluidic sensor
Author :
Wiwatcharagoses, Nophadon ; Park, Kyoung Youl ; Hejase, Jose A. ; Williamson, Lanea ; Chahal, Prem
Author_Institution :
Dept. of Electr. & Comput. Eng., Michigan State Univ., East Lansing, MI, USA
Abstract :
In this paper, microstrip-based spiral structured artificial magnetic media (metamaterial) coupled with microfluidic channel is experimentally demonstrated for sensing applications. It is found that the resonant frequency and the amplitude changes due to dielectric loading from the introduction of chemical substances in the microfluidic channels. Different concentrations of water - methanol and water - isopropanol samples are used in the characterization of the sensor. For water - methanol mixtures, the resonant frequency shifts from 2.15 GHz to 2.0 GHz with change in dielectric constant from 25 to 75. Results show that the wave propagation in LH-media can be used for interrogation of minute volumes of samples with high sensitivity.
Keywords :
metamaterials; microfluidics; microsensors; chemical substance; dielectric loading; interrogation; isopropanol sample; metamaterial; microfluidic channel; microstrip-based spiral structured artificial magnetic media; microwave artificially structured periodic media microfluidic sensor; resonant frequency; sensing application; wave propagation; Dielectric constant; Frequency measurement; Metamaterials; Methanol; Microfluidics; Spirals; Transmission line measurements;
Conference_Titel :
Electronic Components and Technology Conference (ECTC), 2011 IEEE 61st
Conference_Location :
Lake Buena Vista, FL
Print_ISBN :
978-1-61284-497-8
Electronic_ISBN :
0569-5503
DOI :
10.1109/ECTC.2011.5898773
