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

fYear

2011

Firstpage

1889

Lastpage

1893

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronic Components and Technology Conference (ECTC), 2011 IEEE 61st

Conference_Location

Lake Buena Vista, FL

ISSN

0569-5503

Print_ISBN

978-1-61284-497-8

Electronic_ISBN

0569-5503

Type

conf

DOI

10.1109/ECTC.2011.5898773

Filename

5898773