A dielectric loss angle based portable biosensor system for bacterial concentration detection

A dielectric loss angle based portable biosensor system for bacterial concentration detection

A new type of portable sensor is proposed to detect bacterial concentration based on the change in dielectric loss angle δ . The performance of the sensor is tested in four types of drinks, namely, milk, orange juice, peach juice, and tomato juice. Notably, the sensor can detect δ when the bacterial...

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Veröffentlicht in:RSC advances 2015-01, Vol.5 (14), p.85919-85927
Hauptverfasser: Chen, Jingyao, Cai, Jie, Hu, Hao, Huang, Xingjian, Yi, Tian, Wang, Kexing, Pan, Siyi
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container_end_page 85927
container_issue 14
container_start_page 85919
container_title RSC advances
container_volume 5
creator Chen, Jingyao
Cai, Jie
Hu, Hao
Huang, Xingjian
Yi, Tian
Wang, Kexing
Pan, Siyi
description A new type of portable sensor is proposed to detect bacterial concentration based on the change in dielectric loss angle δ . The performance of the sensor is tested in four types of drinks, namely, milk, orange juice, peach juice, and tomato juice. Notably, the sensor can detect δ when the bacterial concentration reaches a critical threshold value (approximately 10 6 cfu mL −1 ) by applying a 1 V peak-to-peak 200 Hz sinusoidal test signal of 0.25 mA at intervals of 10 min. This work introduces a portable and low-system for rapid detection. The system is a useful tool for microbial screening in industrial and commercial environments. A new type of portable sensor is proposed to detect bacterial concentration based on the change in dielectric loss angle δ .
doi_str_mv 10.1039/c5ra13055g
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title A dielectric loss angle based portable biosensor system for bacterial concentration detection
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