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Micromechanical Flow Sensors for Microfluidic Applications
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Micromechanical Flow Sensors for Microfluidic Applications

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Physical Sensors".

Deadline for manuscript submissions: closed (1 January 2024) | Viewed by 7991

Special Issue Editors

Prof. Dr. Remco J. Wiegerink

E-Mail Website
Guest Editor
Integrated Devices and Systems (IDS), University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands
Interests: mechanical microsensors; electronic interfacing of sensors; sensor packaging; force sensors; flow sensors; inertial sensors
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Joost Lötters

E-Mail Website
Guest Editor
1. Integrated Devices and Systems (IDS), University of Twente, 7500 AE Enschede, The Netherlands
2. Innovative Sensor Technologies IST AG, Stegrütistrasse 14, CH-9642 Ebnat-Kappel, Switzerland
Interests: design, modeling, fabrication and application of microfluidic handling systems; MEMS thermal and Coriolis flow sensors and controllers; MEMS pressure sensors; MEMS control valves; micromachined flow analysis systems; multiparameter flow measurement systems; micro Wobbe index meters
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In recent years, there has been a tremendous development towards fully integrated microfluidic systems. New devices not only show improved performance, but also result in a much higher level of integration that allows complete microfluidic systems to be implemented in a single chip or package. Integrated micromechanical flow sensors are key components in this development. Therefore, we are proud to announce this Special Issue entitled "Micromechanical Flow Sensors for Microfluidic Applications". The issue will bring together the most relevant work on state-of-the-art microfluidic flow sensing and its applications, including design and fabrication of the sensor chips, physical working principles, modeling, and simulation, and the measurement setups for characterization and calibration.

Prof. Dr. Remco Wiegerink
Prof. Dr. Joost Lötters
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sensors is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • flow sensors
  • microfluidic systems
  • integrated flow sensing

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Published Papers (3 papers)

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Research

10 pages, 3661 KiB  
Communication
Optimal Design Parameters of Thermal Flowmeter for Fuel Flow Measurement
by Igor Korobiichuk and Andrii Ilchenko
Sensors 2022, 22(22), 8882; https://doi.org/10.3390/s22228882 - 17 Nov 2022
Cited by 2 | Viewed by 1741
Abstract
The article analyses the influence, relationship and value of the design parameters of the thermal flowmeter on its radial and axial heat fluxes in the tube. The purpose of the analyses is to check the change in the error of fuel flow measurement [...] Read more.
The article analyses the influence, relationship and value of the design parameters of the thermal flowmeter on its radial and axial heat fluxes in the tube. The purpose of the analyses is to check the change in the error of fuel flow measurement by the thermal flowmeter directly on the vehicle when using heating elements of different diameters. The influence of the radial heat flux of the flowmeter tube on the accuracy of fuel flow measurement is substantiated. Recommendations on the choice of design parameters of a thermal flowmeter at the stage of its design, development or use are developed under the condition of reducing the influence of the radial heat flow on the axial one, which will reduce the total error in the measurement of fuel flow rate. Full article
(This article belongs to the Special Issue Micromechanical Flow Sensors for Microfluidic Applications)
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12 pages, 538 KiB  
Article
Digital Pregnancy Test Powered by an Air-Breathing Paper-Based Microfluidic Fuel Cell Stack Using Human Urine as Fuel
by Irma Lucia Vera-Estrada, Juan Manuel Olivares-Ramírez, Juvenal Rodríguez-Reséndiz, Andrés Dector, Jorge Domingo Mendiola-Santibañez, Diana María Amaya-Cruz, Adrían Sosa-Domínguez, David Ortega-Díaz, Diana Dector, Victor Manuel Ovando-Medina and Iveth Dalila Antonio-Carmona
Sensors 2022, 22(17), 6641; https://doi.org/10.3390/s22176641 - 2 Sep 2022
Cited by 4 | Viewed by 2910
Abstract
The direct integration of paper-based microfluidic fuel cells (μFC’s) toward creating autonomous lateral flow assays has attracted attention. Here, we show that an air-breathing paper-based μFC could be used as a power supply in pregnancy tests by oxidizing the human urine used for [...] Read more.
The direct integration of paper-based microfluidic fuel cells (μFC’s) toward creating autonomous lateral flow assays has attracted attention. Here, we show that an air-breathing paper-based μFC could be used as a power supply in pregnancy tests by oxidizing the human urine used for the diagnosis. We present an air-breathing paper-based μFC connected to a pregnancy test, and for the first time, as far as we know, it is powered by human urine without needing any external electrolyte. It uses TiO2-Ni as anode and Pt/C as cathode; the performance shows a maximum value of voltage and current and power densities of ∼0.96 V, 1.00 mA cm−2, and 0.23 mW cm−2, respectively. Furthermore, we present a simple design of a paper-based μFC’s stack powered with urine that shows a maximum voltage and maximum current and power densities of ∼1.89 V, 2.77 mA cm−2 and 1.38 mW cm−2, respectively, which powers the display of a pregnancy test allowing to see the analysis results. Full article
(This article belongs to the Special Issue Micromechanical Flow Sensors for Microfluidic Applications)
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17 pages, 6228 KiB  
Article
Air Damping Analysis of a Micro-Coriolis Mass Flow Sensor
by Yaxiang Zeng, Remco Sanders, Remco J. Wiegerink and Joost C. Lötters
Sensors 2022, 22(2), 673; https://doi.org/10.3390/s22020673 - 16 Jan 2022
Viewed by 2099
Abstract
A micro-Coriolis mass flow sensor is a resonating device that measures small mass flows of fluid. A large vibration amplitude is desired as the Coriolis forces due to mass flow and, accordingly, the signal-to-noise ratio, are directly proportional to the vibration amplitude. Therefore, [...] Read more.
A micro-Coriolis mass flow sensor is a resonating device that measures small mass flows of fluid. A large vibration amplitude is desired as the Coriolis forces due to mass flow and, accordingly, the signal-to-noise ratio, are directly proportional to the vibration amplitude. Therefore, it is important to maximize the quality factor Q so that a large vibration amplitude can be achieved without requiring high actuation voltages and high power consumption. This paper presents an investigation of the Q factor of different devices in different resonant modes. Q factors were measured both at atmospheric pressure and in vacuum. The measurement results are compared with theoretical predictions. In the atmospheric environment, the Q factor increases when the resonance frequency increases. When reducing the pressure from 1 bar to 0.1 bar, the Q factor almost doubles. At even lower pressures, the Q factor is inversely proportional to the pressure until intrinsic effects start to dominate, resulting in a maximum Q factor of approximately 7200. Full article
(This article belongs to the Special Issue Micromechanical Flow Sensors for Microfluidic Applications)
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