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Resonant Based MEMS Sensors for Analyte Detection, Concentration Measurements and Environmental Monitoring

A special issue of Sensors (ISSN 1424-8220).

Deadline for manuscript submissions: closed (30 September 2019) | Viewed by 3323

Special Issue Editor


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Guest Editor
KU Leuven, 3000 Leuven, Belgium
Interests: micro- and nanosystems and sensors; fabrication process development; physical MEMS sensors; bio-chemical MEMS sensors; resonators
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Most current biosensors for analyte detection and concentration measurements are based on optical read-out techniques and/or require labelling techniques, often leading to complicated interface systems that make them unsuitable for low-cost applications. Recent developments in micro- or nanoscale resonant sensors are promising to overcome these issues, e.g., based on acoustic wave sensors, coupled resonators, thermo-piezoresistive actuation-sensing techniques, new types of quartz crystal microbalances, high sensitivity gravimetric resonators, etc. They have in common that they offer a solution to the problem that conventional resonant sensors typically require operation in vacuum environment to achieve sufficiently high-quality factors that are of limited use for direct application for biosensing.

This call for papers invites technical contributions from the Sensors Special Issue on “Resonant Based Bio-MEMS Sensors for Analyte Detection and Concentration Measurements”. This Special Issue aims to provide an up-to-date overview of resonant biosensors that can be used in direct contact with the medium that the bioanalyte to-be-sensed is in, their theory, and their solutions, as well as a forum for sharing innovative approaches and applications. Potential topics include, but are not limited to, the following:

  • Acoustic wave biosensors;
  • Coupled resonator sensors;
  • Biosensors based on piezoelectric resonators;
  • High-Q resonator sensors;
  • Quartz Crystal microbalances for biosensing;
  • Gravimetric biosensors;
  • Nanoscale resonators.

Prof. Dr. Michael Kraft
Guest Editor

Manuscript Submission Information

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Keywords

  • Gravimetric biosensors
  • Acoustic wave biosensors
  • Piezoelectric sensors
  • Coupled resonator sensors
  • Nanoscale resotors
  • Label-free

Published Papers (1 paper)

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Research

18 pages, 4600 KiB  
Article
Cantilever-Droplet-Based Sensing of Magnetic Particle Concentrations in Liquids
by Wilson Ombati Nyang’au, Andi Setiono, Maik Bertke, Harald Bosse and Erwin Peiner
Sensors 2019, 19(21), 4758; https://doi.org/10.3390/s19214758 - 01 Nov 2019
Cited by 10 | Viewed by 2854
Abstract
Cantilever-based sensors have attracted considerable attention in the recent past due to their enormous and endless potential and possibilities coupled with their dynamic and unprecedented sensitivity in sensing applications. In this paper, we present a technique that involves depositing and vaporizing (at ambient [...] Read more.
Cantilever-based sensors have attracted considerable attention in the recent past due to their enormous and endless potential and possibilities coupled with their dynamic and unprecedented sensitivity in sensing applications. In this paper, we present a technique that involves depositing and vaporizing (at ambient conditions) a particle-laden water droplet onto a defined sensing area on in-house fabricated and commercial-based silicon microcantilever sensors. This process entailed the optimization of dispensing pressure and time to generate and realize a small water droplet volume (Vd = 49.7 ± 1.9 pL). Moreover, we monitored the water evaporation trends on the sensing surface and observed total evaporation time per droplet of 39.0 ± 1.8 s against a theoretically determined value of about 37.14 s. By using monodispersed particles in water, i.e., magnetic polystyrene particles (MPS) and polymethyl methacrylate (PMMA), and adsorbing them on a dynamic cantilever sensor, the mass and number of these particles were measured and determined comparatively using resonant frequency response measurements and SEM particle count analysis, respectively. As a result, we observed and reported monolayer particles assembled on the sensor with the lowest MPS particles count of about 19 ± 2. Full article
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