| CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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Sensing Characteristics of Shear-Mode AlN Solidly Mounted Resonators with a Silicone Microfluidic System in Viscous Media |
| XIONG Juan1,2, GUO Peng1,2, SUN Xi-Liang1,2, WANG Sheng-Fu1,2, HU Ming-Zhe3, GU Hao-Shuang1,2** |
1School of Physics and Electronic Science, Hubei University, Wuhan 430062
2Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Hubei University, Wuhan 430062
3College of Science, Guizhou University, Guiyang 550025
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| Cite this article: |
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XIONG Juan, GUO Peng, SUN Xi-Liang et al 2014 Chin. Phys. Lett. 31 028502 |
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Abstract AlN solidly mounted resonators with silicone microfluidic systems vibrating in shear mode are fabricated and characterized. The fabrication process is compatible with integrated circuits and the c-axis tilted AlN films are deposited, which allow in-liquid operation through excitation of the shear mode. The silicone microfluidic system is mounted on top of the sensor chip to transport the analyses and confine the flow to the active area. The properties of sensor operation in air, deionized water, ethanol, isopropanol, 80% glycol aqueous solution, glycol, and olive oil are characterized. The effects of different viscosities on the resonance frequency shift and Q-factor of the sensor have been discussed. The sensitivity and Q value in glycol of the sensor are 1.52 MHz cm2/μg and around 60, respectively. The results indicate the potential of a highly sensitive microfluidic sensor system for the applications in viscous media.
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Received: 19 April 2013
Published: 28 February 2014
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| PACS: |
85.30.Fg
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(Bulk semiconductor and conductivity oscillation devices (including Hall effect devices, space-charge-limited devices, and Gunn effect devices))
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85.50.-n
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(Dielectric, ferroelectric, and piezoelectric devices)
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87.80.-y
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(Biophysical techniques (research methods))
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