Smartphone based portable bacteria pre-concentrating microfluidic sensor and impedance sensing system
Smartphone based portable bacteria pre-concentrating microfluidic sensor and impedance sensing system
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DOI：
10.1016/j.snb.2013.11.103
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发表时间：
2014-03-01
影响因子：
8.4
通讯作者：
Liu, Gang Logan
中科院分区：
文献类型：
--
作者：
Jiang, Jing;Wang, Xinhao;Liu, Gang Logan
便携式低成本传感器和传感系统用于识别和定量测量田间水中的细菌是防止饮用水被细菌污染的关键。本文报道了一种以智能手机为平台的低成本、小型化、灵敏的电阻抗谱细菌传感器的设计、制作和测试。我们的微流体设计能够预浓缩细菌，将检测限降低到每毫升10个细菌细胞。我们设想，我们展示的基于智能手机的传感系统将实现对多种细菌和病原体的高灵敏度和快速现场定量。(C)2013爱思唯尔有限公司版权所有。
Portable low-cost sensors and sensing systems for the identification and quantitative measurement of bacteria in field water are critical in preventing drinking water from being contaminated by bacteria. In this article, we reported the design, fabrication and testing of a low-cost, miniaturized and sensitive bacteria sensor based on electrical impedance spectroscopy method using a smartphone as the platform. Our design of microfluidics enabled the pre-concentration of the bacteria which lowered the detection limit to 10 bacterial cells per milliliter. We envision that our demonstrated smartphone-based sensing system will realize highly-sensitive and rapid in-field quantification of multiple species of bacteria and pathogens. (C) 2013 Elsevier B.V. All rights reserved.