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Advanced Materials and Technologies for Printed Sensors and Electronics
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Advanced Materials and Technologies for Printed Sensors and Electronics

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

Deadline for manuscript submissions: closed (20 December 2023) | Viewed by 3797

Special Issue Editor

Dr. Gemma Gabriel

E-Mail Website
Guest Editor
Instituto de Microelectrónica de Barcelona, IMB-CNM (CSIC), Esfera UAB, Campus Universitat Autònoma de Barcelona, Bellaterra, 08193 Barcelona, Spain
Interests: materials science; material characterization; thin films and nanotechnology; nanoelectronics; nanomaterials; nanofabrication; electrochemical analysis; inkjet printing technologies

Special Issue Information

Dear Colleagues,

Functional materials are clearly a fundamental part in the development of many emerging technologies; however, this is especially true of printed or flexible electronics since the materials need to combine electronic and semiconducting functionality with being flexible and/or solution-processable, as well as being stable and straightforward to manufacture. The aim of this Special Issue is to be a forum for the latest research activities which demonstrate innovative materials as key enabling components of printed electronics, especially printed sensors and flexible and/or printed electronics. Special attention will be taken to the innovation of green and sustainable materials. 

It will publish relevant feature papers in this field, focusing on research articles, reviews, short communications, and trends. We are seeking papers researching the following areas:

  • Wearable, flexible and stretchable materials;
  • Materials for green electronics;
  • Materials for printed sensors;
  • Smart advanced packaging;
  • New strategies for materials beyond silicon, transparent, flexible, and printable electronics;
  • Multifunctional materials;
  • Materials for sustainable fabrication routes.

Dr. Gemma Gabriel
Guest Editor

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

  • advanced functional materials
  • smart materials
  • flexible and stretchable materials
  • sustainable materials
  • sensors
  • printed electronics

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Further information on MDPI's Special Issue polices can be found here.

Published Papers (2 papers)

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Research

14 pages, 6046 KiB  
Article
Inkjet-Printed Multiwalled Carbon Nanotube Dispersion as Wireless Passive Strain Sensor
by Abderrahmane Benchirouf and Olfa Kanoun
Sensors 2024, 24(5), 1585; https://doi.org/10.3390/s24051585 - 29 Feb 2024
Cited by 1 | Viewed by 1112
Abstract
In this study, a multiwalled carbon nanotube (MWCNT) dispersion is used as an ink for a single-nozzle inkjet printing system to produce a planar coil that can be used to determine strain wirelessly. The MWCNT dispersion is non-covalently functionalized by dispersing the CNTs [...] Read more.
In this study, a multiwalled carbon nanotube (MWCNT) dispersion is used as an ink for a single-nozzle inkjet printing system to produce a planar coil that can be used to determine strain wirelessly. The MWCNT dispersion is non-covalently functionalized by dispersing the CNTs in an anionic surfactant, namely sodium dodecyl sulfate (SDS). The fabrication parameters, such as sonication energy and centrifugation time, are optimized to obtain an aqueous suspension suitable for an inkjet printer. Planar coils with different design parameters are printed on a flexible polyethylene terephthalate (PET) polymer substrate. The design parameters include a different number of windings, inner diameter, outer diameter, and deposited layers. The electrical impedance spectroscopy (EIS) analysis is employed to characterize the printed planar coils, and an equivalent electrical circuit model is derived based on the results. Additionally, the radio frequency identification technique is utilized to wirelessly investigate the read-out mechanism of the printed planar MWCNT coils. The complex impedance of the inductively coupled sensor undergoes a shift under strain, allowing for the monitoring of changes in resonance frequency and bandwidth (i.e., amplitude). The proposed wireless strain sensor exhibits a remarkable gauge factor of 22.5, which is nearly 15 times higher than that of the wireless strain sensors based on conventional metallic strain gauges. The high gauge factor of the proposed sensor suggests its high potential in a wide range of applications, such as structural health monitoring, wearable devices, and soft robotics. Full article
(This article belongs to the Special Issue Advanced Materials and Technologies for Printed Sensors and Electronics)
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15 pages, 9620 KiB  
Article
Electrochemical Properties of PEDOT:PSS/Graphene Conductive Layers in Artificial Sweat
by Boriana Tzaneva, Mariya Aleksandrova, Valentin Mateev, Bozhidar Stefanov and Ivo Iliev
Sensors 2024, 24(1), 39; https://doi.org/10.3390/s24010039 - 20 Dec 2023
Cited by 2 | Viewed by 2242
Abstract
Electrodes based on PEDOT:PSS are gaining increasing importance as conductive electrodes and functional layers in various sensors and biosensors due to their easy processing and biocompatibility. This study investigates PEDOT:PSS/graphene layers deposited via spray coating on flexible PET substrates. The layers are characterized [...] Read more.
Electrodes based on PEDOT:PSS are gaining increasing importance as conductive electrodes and functional layers in various sensors and biosensors due to their easy processing and biocompatibility. This study investigates PEDOT:PSS/graphene layers deposited via spray coating on flexible PET substrates. The layers are characterized in terms of their morphology, roughness (via AFM and SEM), and electrochemical properties in artificial sweat using electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). The layers exhibit dominant capacitive behavior at low frequencies, with cut-off frequencies determined for thicker layers at 1 kHz. The equivalent circuit used to fit the EIS data reveals a resistance of about three orders of magnitude higher inside the layer compared to the charge transfer resistance at the solid/liquid interface. The capacitance values determined from the CV curves range from 54.3 to 122.0 mF m−2. After 500 CV cycles in a potential window of 1 V (from −0.3 to 0.7 V), capacitance retention for most layers is around 94%, with minimal surface changes being observed in the layers. The results suggest practical applications for PEDOT:PSS/graphene layers, both for high-frequency impedance measurements related to the functioning of individual organs and systems, such as impedance electrocardiography, impedance plethysmography, and respiratory monitoring, and as capacitive electrodes in the low-frequency range, realized as layered PEDOT:PSS/graphene conductive structures for biosignal recording. Full article
(This article belongs to the Special Issue Advanced Materials and Technologies for Printed Sensors and Electronics)
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