Next Article in Journal
High Sensitive and Selective Sensing of Hydrogen Peroxide Released from Pheochromocytoma Cells Based on Pt-Au Bimetallic Nanoparticles Electrodeposited on Reduced Graphene Sheets
Previous Article in Journal
Preliminary Evaluation of a Nest Usage Sensor to Detect Double Nest Occupations of Laying Hens
Article Menu

Export Article

Open AccessArticle
Sensors 2015, 15(2), 2694-2708; doi:10.3390/s150202694

Capacitance Variation Induced by Microfluidic Two-Phase Flow across Insulated Interdigital Electrodes in Lab-On-Chip Devices

1,2,3,* and 3
1
Institute of Applied Micro-Nano Science and Technology, Chongqing Technology and Business University, Chongqing 400067, China
2
Chongqing Engineering Laboratory for Detection, Control and Integrated System, Chongqing Technology and Business University, Chongqing 400067, China
3
Department of Micro and Nano Systems Technology (IMST), Faculty of Technology and Maritime Sciences (TekMar), Buskerud and Vestfold University College (HBV), Borre 3184, Norway
*
Author to whom correspondence should be addressed.
Received: 10 December 2014 / Accepted: 20 January 2015 / Published: 26 January 2015
(This article belongs to the Section Biosensors)
View Full-Text   |   Download PDF [2556 KB, uploaded 26 January 2015]   |  

Abstract

Microfluidic two-phase flow detection has attracted plenty of interest in various areas of biology, medicine and chemistry. This work presents a capacitive sensor using insulated interdigital electrodes (IDEs) to detect the presence of droplets in a microchannel. This droplet sensor is composed of a glass substrate, patterned gold electrodes and an insulation layer. A polydimethylsiloxane (PDMS) cover bonded to the multilayered structure forms a microchannel. Capacitance variation induced by the droplet passage was thoroughly investigated with both simulation and experimental work. Olive oil and deionized water were employed as the working fluids in the experiments to demonstrate the droplet sensor. The results show a good sensitivity of the droplet with the appropriate measurement connection. This capacitive droplet sensor is promising to be integrated into a lab-on-chip device for in situ monitoring/counting of droplets or bubbles. View Full-Text
Keywords: lab-on-a-chip; microfluidics; droplets capacitive sensing; interdigital electrodes lab-on-a-chip; microfluidics; droplets capacitive sensing; interdigital electrodes
Figures

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Dong, T.; Barbosa, C. Capacitance Variation Induced by Microfluidic Two-Phase Flow across Insulated Interdigital Electrodes in Lab-On-Chip Devices. Sensors 2015, 15, 2694-2708.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top