Next Article in Journal
Silicon Nanowire‐Based Devices for Gas-Phase Sensing
Next Article in Special Issue
First-Principles Surface Stress Calculations and Multiscale Deformation Analysis of a Self-Assembled Monolayer Adsorbed on a Micro-Cantilever
Previous Article in Journal
Set Up of an Automatic Water Quality Sampling System in Irrigation Agriculture
Previous Article in Special Issue
Heater-Integrated Cantilevers for Nano-Samples Thermogravimetric Analysis
Article Menu

Export Article

Open AccessArticle
Sensors 2014, 14(1), 229-244; doi:10.3390/s140100229

Integrated Cantilever-Based Flow Sensors with Tunable Sensitivity for In-Line Monitoring of Flow Fluctuations in Microfluidic Systems

Department of Micro- and Nanotechnology, Technical University of Denmark, DTU Nanotech, Building 345E, DK-2800 Kgs. Lyngby, Denmark
Author to whom correspondence should be addressed.
Received: 30 September 2013 / Revised: 12 December 2013 / Accepted: 18 December 2013 / Published: 23 December 2013
(This article belongs to the Special Issue Nanomechanical Sensors)
View Full-Text   |   Download PDF [1079 KB, uploaded 21 June 2014]   |  


For devices such as bio-/chemical sensors in microfluidic systems, flow fluctuations result in noise in the sensor output. Here, we demonstrate in-line monitoring of flow fluctuations with a cantilever-like sensor integrated in a microfluidic channel. The cantilevers are fabricated in different materials (SU-8 and SiN) and with different thicknesses. The integration of arrays of holes with different hole size and number of holes allows the modification of device sensitivity, theoretical detection limit and measurement range. For an average flow in the microliter range, the cantilever deflection is directly proportional to the flow rate fluctuations in the microfluidic channel. The SiN cantilevers show a detection limit below 1 nL/min and the thinnest SU-8 cantilevers a detection limit below 5 nL/min. Finally, the sensor is applied for in-line monitoring of flow fluctuations generated by external pumps connected to the microfluidic system. View Full-Text
Keywords: micromechanical sensor; flow meter; pump characterization micromechanical sensor; flow meter; pump characterization
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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

Noeth, N.; Keller, S.S.; Boisen, A. Integrated Cantilever-Based Flow Sensors with Tunable Sensitivity for In-Line Monitoring of Flow Fluctuations in Microfluidic Systems. Sensors 2014, 14, 229-244.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



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