eprintid: 3735 rev_number: 10 eprint_status: archive userid: 270 dir: disk0/00/00/37/35 datestamp: 2019-12-09 07:06:17 lastmod: 2019-12-09 07:06:17 status_changed: 2019-12-09 07:06:17 type: article metadata_visibility: show creators_name: Do, Loc Quang creators_name: Bui, Thanh Tung creators_name: Hoang, Bao Anh creators_name: Van, Thanh Pham creators_name: Jen, Chun-Ping creators_name: Chu, Duc Trinh creators_id: locdq@hus.edu.vn creators_id: tungbt@vnu.edu.vn creators_id: baoanh0408@gmail.com creators_id: phamvanthanh@hus.edu.vn creators_id: Chun-Ping@gmail.com creators_id: trinhcd@vnu.edu.vn title: Development of a Passive Capacitively Coupled Contactless Conductivity Detection (PC4D) Sensor System for Fluidic Channel Analysis Toward Point-of-Care Applications ispublished: pub subjects: isi divisions: cetr_uet divisions: fac_fet abstract: A sensor system based on a modified capacitively coupled contactless conductivity detection sensor is proposed and developed. The proposed system provides a passive and wireless readout technique, through which the conductivity of fluidic flow can be analyzed and foreign objects occurring in the fluidic flow can be detected. The proposed sensor system takes advantage of the series resonance principle and detects shifts in the resonance frequency and reflection coefficient to estimate the conductivity of the fluidic flow. In this study, the working principle of the device is proposed and analyzed using a multiphysics simulation, and its performance is validated experimentally. The sensing performance is confirmed by measuring the conductivity of the fluidic media and the detection of foreign objects, such as air bubbles or water droplets, occurring in the flow. The influence of the distance between the inductors on the resonance frequency for different solution conductivities is also investigated and reported. The proposed sensor system shows its potential for use in various applications in biomedicine and chemistry, particularly in point-of-care applications, where the sensing chip can be easily set up for measurement and disposed of after use. date: 2019 date_type: published publisher: IEEE official_url: http://dx.doi.org/10.1109/JSEN.2019.2908179 id_number: 10.1109/JSEN.2019.2908179 full_text_status: none publication: IEEE Sensors Journal volume: 19 number: 15 pagerange: 6371-6380 refereed: TRUE issn: 1530-437X citation: Do, Loc Quang and Bui, Thanh Tung and Hoang, Bao Anh and Van, Thanh Pham and Jen, Chun-Ping and Chu, Duc Trinh (2019) Development of a Passive Capacitively Coupled Contactless Conductivity Detection (PC4D) Sensor System for Fluidic Channel Analysis Toward Point-of-Care Applications. IEEE Sensors Journal, 19 (15). pp. 6371-6380. ISSN 1530-437X