An Ultrahigh Sensitivity Microwave Sensor for Microfluidic Applications
This work shows an ultrahigh sensitivity microwave sensor for microfluidic applications. The proposed sensor is made of a microstrip line loaded with a complementary splitring resonator (CSRR). The meander slot is adopted in the CSRR to achieve high field confinement and is therefore covered with a...
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| Published in | IEEE microwave and wireless components letters Vol. 30; no. 12; pp. 1201 - 1204 |
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| Main Authors | , , , , , |
| Format | Journal Article |
| Language | English |
| Published |
IEEE
01.12.2020
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| Subjects | |
| Online Access | Get full text |
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| Abstract | This work shows an ultrahigh sensitivity microwave sensor for microfluidic applications. The proposed sensor is made of a microstrip line loaded with a complementary splitring resonator (CSRR). The meander slot is adopted in the CSRR to achieve high field confinement and is therefore covered with a polydimethylsiloxane (PDMS) microfluidic channel to enable strong interaction between the field and the liquid sample. The complex permittivity of the liquid sample can be retrieved by the variations in the resonant frequency and peak attenuation. The proposed design requires a very small liquid volume of ~0.5 μL while offering a high sensitivity. A prototype is fabricated and tested, with a good agreement achieved between the extracted values and the reference data. |
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| AbstractList | This work shows an ultrahigh sensitivity microwave sensor for microfluidic applications. The proposed sensor is made of a microstrip line loaded with a complementary splitring resonator (CSRR). The meander slot is adopted in the CSRR to achieve high field confinement and is therefore covered with a polydimethylsiloxane (PDMS) microfluidic channel to enable strong interaction between the field and the liquid sample. The complex permittivity of the liquid sample can be retrieved by the variations in the resonant frequency and peak attenuation. The proposed design requires a very small liquid volume of ~0.5 μL while offering a high sensitivity. A prototype is fabricated and tested, with a good agreement achieved between the extracted values and the reference data. |
| Author | Chen, Shichang Wang, Gaofeng Zhao, Wen-Sheng Wang, Da-Wei Fan, Li-Chao Liu, Qi |
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| Cites_doi | 10.1109/TMTT.2019.2932737 10.1002/mop.29979 10.1109/TDEI.2006.1667730 10.1109/JSEN.2013.2295312 10.1007/s00339-019-3186-4 10.1109/TMTT.2009.2034226 10.1109/TMTT.2012.2231877 10.3390/s18114005 10.1063/1.471197 10.1109/JSEN.2013.2244035 10.1109/MMM.2011.2181448 10.1109/TMTT.2014.2299514 10.1109/JSEN.2020.2973196 |
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| SubjectTerms | Attenuation Complementary split-ring resonator (CSRR) liquid microfluidic sensor Microfluidics Microstrip Microwave sensors parallel plate waveguide Permittivity Sensitivity |
| Title | An Ultrahigh Sensitivity Microwave Sensor for Microfluidic Applications |
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