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Properties and Applications of Piezo-Resistive Sensors
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Properties and Applications of Piezo-Resistive Sensors

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

Deadline for manuscript submissions: closed (15 April 2021) | Viewed by 8845

Special Issue Editors

Prof. Dr. Franz Konstantin Fuss

E-Mail Website1 Website2
Guest Editor
Centre for Design Innovation, Swinburne University of Technology, Melbourne, Australia
Interests: sensors; smart equipment; wearable technology; data analytics; fractal dimensions; aerodynamics; tribology; sports engineering
Dr. Adin Ming Tan

E-Mail Website
Guest Editor
Centre for Design Innovation, Swinburne University of Technology, Melbourne, Australia
Interests: sensors; smart equipment; wearable technology; data analytics; sports engineering; research methodology; product innovation
Dr. Yehuda Weizman

E-Mail Website
Guest Editor
1. Chair of Biomechanics, Faculty of Engineering Science, University of Bayreuth, D-95440 Bayreuth, Germany
2. Department of Health and Medical Sciences, School of Health Sciences, Hawthorn Campus, Swinburne University of Technology, Melbourne 3122, Australia
Interests: sensors; smart equipment; wearable technology; sports engineering; data analytics product innovation; electronics design; gait analysis
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Piezoresistive sensors and transducers change their resistance when subjected to strain, and they are one of the most widely used forms of sensors with a huge range of applications. They have several attractive traits that render them attractive in technology implementation such as low cost, accessibility, and ease of operations. There are several characteristics of piezoresistive sensors that need to be explored. Examples of these characteristics include but are not limited to linearity, temperature dependency, viscosity, sensitivity, range, and drift. This Special Issue dedicated to Piezoresistive Sensors aims to publish papers ranging from fundamental research to applied research, with focus on emerging research in the areas of:

  • Piezoresistive inks for printing of sensors; there are several technologies for the printing of piezoresistive sensors, such as screen printing, sintering, ink jet printing, etc. This depends on the types of substrate used, the curing treatment of the inks, the performance of the sensor, ease of manufacturing, etc.;
  • smart composite materials; incorporating piezoresistive elements into traditionally nonsensing Saterials may lead to sensing properties of the composite; this may include wood, glass fiber composites, plastics, etc.;
  • Fabric and textile sensors for wearable technology; yarn can be made to have sensing properties when additional materials are integrated in them; some applications may include activity and motion tracking, fatigue detection, etc.;
  • 3D printing of sensors; embedded sensing elements within 3D-printed structures that allow detection of mechanical strain, stress, flexion, and deformation.
  • Allotropes of carbon for producing sensors (incl. graphene);
  • Piezoresistive sensors and IoT; incorporating sensors with IoT allows continuous monitoring of structural integrity, frequency of usage, detection of anomaly, etc.;
  • Analytics of data obtained from piezoresistive sensors.

Authors can include novel applications of these sensors as well, in fields such as sports, medicine automotive, defense, etc.

Prof. Dr. Franz Konstantin Fuss
Dr. Adin Ming Tan
Dr. Yehuda Weizman
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

  • piezoresistive sensors
  • smart composites
  • 3D-printed sensors
  • graphene
  • IoT
  • wearables technologies

Published Papers (2 papers)

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Research

17 pages, 4887 KiB  
Article
A Novel Multi-Axial Pressure Sensor Probe for Measuring Triaxial Stress States Inside Soft Materials
by Giuseppe Zullo, Anna Leidy Silvestroni, Gianluca Candiotto, Andrey Koptyug and Nicola Petrone
Sensors 2021, 21(10), 3487; https://doi.org/10.3390/s21103487 - 17 May 2021
Cited by 1 | Viewed by 2776
Abstract
This paper presents the concept, design, construction, and validation of a novel probe based on the hexadic disposition of six pressure sensors suitable for measuring triaxial stress states inside bulky soft materials. The measurement of triaxial stress states inside bulk materials such as [...] Read more.
This paper presents the concept, design, construction, and validation of a novel probe based on the hexadic disposition of six pressure sensors suitable for measuring triaxial stress states inside bulky soft materials. The measurement of triaxial stress states inside bulk materials such as brain tissue surrogates is a challenging task needed to investigate internal organs’ stress states and validate FE models. The purpose of the work was the development and validation of a 17 × 17 × 17 mm probe containing six pressure sensors. To do so, six piezoresistive pressure sensors of 6 mm diameter were arranged into an hexad at three cartesian axes and bisecting angles, based on the analytical solution of the stress tensor. The resulting probe was embedded in a soft silicone rubber of known characteristics, calibrated under cyclic compression and shear in three orientations, and statically validated with combined loads. A calibration matrix was computed, and validation tests allowed us to estimate Von Mises stress under combined stress with an error below 6%. Hence, the proposed probe design and method can give indications about the complex stress state developing internally to soft materials under triaxial high-strain fields, opening applications in the analysis of biological models or physical surrogates involving parenchyma organs. Full article
(This article belongs to the Special Issue Properties and Applications of Piezo-Resistive Sensors)
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19 pages, 5181 KiB  
Article
Pressure Sensor System for Customized Scoliosis Braces
by Franz Konstantin Fuss, Asliza Ahmad, Adin Ming Tan, Rizal Razman and Yehuda Weizman
Sensors 2021, 21(4), 1153; https://doi.org/10.3390/s21041153 - 06 Feb 2021
Cited by 12 | Viewed by 5289
Abstract
Hard-shell thoracolumbar sacral orthoses (TLSOs) are used for treating idiopathic scoliosis, a deformation of the spine with a sideways curvature. The pressure required inside the TLSO for ideal corrective results remains unclear. Retrofitting TLSOs with commercially available pressure measurement systems is expensive and [...] Read more.
Hard-shell thoracolumbar sacral orthoses (TLSOs) are used for treating idiopathic scoliosis, a deformation of the spine with a sideways curvature. The pressure required inside the TLSO for ideal corrective results remains unclear. Retrofitting TLSOs with commercially available pressure measurement systems is expensive and can only be performed in a laboratory. The aim of this study was to develop a cost-effective but accurate pressure sensor system for TLSOs. The sensor was built from a piezoresistive polymer, placed between two closed-cell foam liners, and evaluated with a material testing machine. Because foams are energy absorbers, the pressure-conductance curve was affected by hysteresis. The sensor was calibrated on a force plate with the transitions from loading to unloading used to establish the calibration curve. The root mean square error was 12% on average within the required pressure range of 0.01–0.13 MPa. The sensor reacted to the changing pressure during breathing and different activities when tested underneath a chest belt at different tensions. The peak pressure reached 0.135 MPa. The sensor was further tested inside the scoliosis brace during different activities. The measured pressure was 0.014–0.124 MPa. The results from this study enable cheaper and mobile systems to be used for clinical studies on the comfort and pressure of braces during daily activities. Full article
(This article belongs to the Special Issue Properties and Applications of Piezo-Resistive Sensors)
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