Next Article in Journal
Surface Plasmon Resonance Sensor Based on Ethylene Tetra-Fluoro-Ethylene Hollow Fiber
Previous Article in Journal
A Spiking Neural Network in sEMG Feature Extraction
Article Menu

Export Article

Open AccessArticle
Sensors 2015, 15(11), 27905-27916; doi:10.3390/s151127905

High Resolution Viscosity Measurement by Thermal Noise Detection

1
Departamento de Física, Universidad de Santiago de Chile, Avenida Ecuador 3493, Estación Central, Santiago 9170124, Chile
2
Laboratoire de Physique, Université de Lyon, Ecole Normale Supérieure de Lyon, CNRS, 46 Allée d’Italie, Lyon F-69007, France
These authors contributed equally to this work.
*
Authors to whom correspondence should be addressed.
Academic Editor: Vittorio M. N. Passaro
Received: 21 September 2015 / Revised: 26 October 2015 / Accepted: 29 October 2015 / Published: 3 November 2015
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [806 KB, uploaded 6 November 2015]   |  

Abstract

An interferometric method is implemented in order to accurately assess the thermal fluctuations of a micro-cantilever sensor in liquid environments. The power spectrum density (PSD) of thermal fluctuations together with Sader’s model of the cantilever allow for the indirect measurement of the liquid viscosity with good accuracy. The good quality of the deflection signal and the characteristic low noise of the instrument allow for the detection and corrections of drawbacks due to both the cantilever shape irregularities and the uncertainties on the position of the laser spot at the fluctuating end of the cantilever. Variation of viscosity below 0.03 mPa·s was detected with the alternative to achieve measurements with a volume as low as 50 µL. View Full-Text
Keywords: thermal fluctuations; viscosity in liquids; MEMS thermal fluctuations; viscosity in liquids; MEMS
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

Aguilar Sandoval, F.; Sepúlveda, M.; Bellon, L.; Melo, F. High Resolution Viscosity Measurement by Thermal Noise Detection. Sensors 2015, 15, 27905-27916.

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