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Advances in Cantilever Sensors and the Applications

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

Deadline for manuscript submissions: closed (25 November 2022) | Viewed by 2961

Special Issue Editor


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Guest Editor
School of Physics & Clinical & Optometric Sciences, Technological University of Dublin, City Campus, Kevin Street, D08NF82 Dublin, Ireland
Interests: cantilever sensors and nanomechanical tools for diagnostics; surface-enhanced Raman and infrared spectroscopy; cancer diagnostics; thin polymer films; soft lithography; plasmonics for medical and energy applications; plasma physics
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Special Issue Information

Dear Colleagues,

Cantilever-based sensors first attracted interest in early sensing applications when researchers focused on the fact that microsilicon cantilevers used in atomic force microscopy (AFM) deflect due to changes in relative humidity. Over the years, cantilever sensor research has evolved due to these sensors’ ability to work as label-free sensors capable of detecting numerous target analytes with high sensitivity, but also due to their ability to be mass produced.

Presently, cantilever-based sensors are used in various areas ranging from environmental (e.g., humidity, gas, or thermal sensing) to novel physical (surface and coating technology, mechanical wear, surface stress measurements, etc.), chemical (e.g., the detection of low molecular weight molecules at low concentrations), medical (e.g., cancer, tissue engineering) or biological (e.g., cell detection, microbiology, genomics) applications. With the increase in their applications, the size (e.g., from micro- to macro-sized), shape, structure (e.g., patterns) of cantilevers has grown. Cantilever manufacturing methods have also advanced, while the materials used have diversified from silicon to polymers or paper.

The aim of this Special Issue is to gather original contributions or review papers from researchers that are actively engaged in developing new ideas in any of the innumerable sectors of development of cantilever sensors for various applications:

  • Environmental sensing;
  • Chemical applications;
  • Biomedical engineering;
  • Fabrication of nano-, micro- or macro-specialized cantilevers;
  • Stress measurements

Dr. George Amarandei
Guest Editor

Manuscript Submission Information

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Published Papers (1 paper)

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Research

19 pages, 3580 KiB  
Article
Ultrafine Aerosol Particle Sizer Based on Piezoresistive Microcantilever Resonators with Integrated Air-Flow Channel
by Maik Bertke, Ina Kirsch, Erik Uhde and Erwin Peiner
Sensors 2021, 21(11), 3731; https://doi.org/10.3390/s21113731 - 27 May 2021
Cited by 7 | Viewed by 2542
Abstract
To monitor airborne nano-sized particles (NPs), a single-chip differential mobility particle sizer (DMPS) based on resonant micro cantilevers in defined micro-fluidic channels (µFCs) is introduced. A size bin of the positive-charged fraction of particles herein is separated from the air stream by aligning [...] Read more.
To monitor airborne nano-sized particles (NPs), a single-chip differential mobility particle sizer (DMPS) based on resonant micro cantilevers in defined micro-fluidic channels (µFCs) is introduced. A size bin of the positive-charged fraction of particles herein is separated from the air stream by aligning their trajectories onto the cantilever under the action of a perpendicular electrostatic field of variable strength. We use previously described µFCs and piezoresistive micro cantilevers (PMCs) of 16 ng mass fabricated using micro electro mechanical system (MEMS) technology, which offer a limit of detection of captured particle mass of 0.26 pg and a minimum detectable particulate mass concentration in air of 0.75 µg/m3. Mobility sizing in 4 bins of a nebulized carbon aerosol NPs is demonstrated based on finite element modelling (FEM) combined with a-priori knowledge of particle charge state. Good agreement of better than 14% of mass concentration is observed in a chamber test for the novel MEMS-DMPS vs. a simultaneously operated standard fast mobility particle sizer (FMPS) as reference instrument. Refreshing of polluted cantilevers is feasible without de-mounting the sensor chip from its package by multiply purging them alternately in acetone steam and clean air. Full article
(This article belongs to the Special Issue Advances in Cantilever Sensors and the Applications)
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