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Special Issue "Carbon Nanotube and Graphene-based Sensors"

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

Deadline for manuscript submissions: 30 December 2020.

Special Issue Editors

Prof. Dr. Alfredo Güemes
Website
Guest Editor
Department Aeronautics, University Politecnica de Madrid, Spain
Interests: composite material; structural health monitoring; fiber optic sensors; smart structures; aerostructures
Special Issues and Collections in MDPI journals
Prof. Dr. Zhongqing Su
Website
Guest Editor
Mechanical Engineering, The Hong Kong Polytechnic University
Interests: structural health monitoring; ultrasonics wave propagation; smart materials and structures; nondestructive evaluation
Special Issues and Collections in MDPI journals

Special Issue Information

Dear Colleagues,

Since the first paper on carbon nanotubes (CNT) was published by Iijima in 1991, the number of articles and applications of carbon nanofillers has continuously increased, offering new and astonishing possibilities for advanced research and development. Restricting our search only to sensing applications, we can see that the scientific production, according to Scopus, has been about 1000–1200 papers per year since 2010, focusing on three main branches: biosensors, chemical sensors, and mechanical (strain and damage) sensors. Restricting our search to this last group, the number of publications is currently about 200 papers per year, with a fast growth in the last three years, indicating that basic principles have been well verified, with validations and applications having been intensively explored. Dispersed in polymers, nanofillers have demonstrated a high sensitivity and great easiness for diverse applications, for the conventional small strain field mixed with thermosetting resins, or for very large displacements mixed with elastomeric compounds—the so-called highly stretchable sensors. At the same time, some issues remain to be clarified, such as characterization for the sensor under a complex strain field, response to temperature, influence of the processing route, reproducibility, and reliability, and many others.

This Special Issue of Sensors (MDPI) reflects on the rise of nanofillers sensing technologies, focusing on all aspects of research and development of carbon-nanotube-related sensors. The issue emphasizes research and review manuscripts that focus on experimental design, tests, and applications of CNT sensors. We expect that by providing researchers working on CNT strain and SHM (structural health monitoring) sensors with a platform to publish their recent results, we can provide the audience a wide breadth of research that encompasses manufacturing, experimental validation, and testing.

Prof. Dr. Alfredo Güemes
Prof. Dr. Zhongqing Su
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 papers will be 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 2000 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

  • Carbon nanotubes
  • Graphene
  • Strain sensors
  • Damage sensors
  • Structural health monitoring (SHM) Piezoresistivity
  • Nanocomposites
  • Electromechanical response
  • Electrical impedance tomography
  • Sensitive inks
  • Multifunctional composites
  • Smart adhesives

Published Papers (1 paper)

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Research

Open AccessArticle
Directional Response of Randomly Dispersed Carbon Nanotube Strain Sensors
Sensors 2020, 20(10), 2980; https://doi.org/10.3390/s20102980 - 24 May 2020
Abstract
Tests on a double lap bonded joint, with transverse strips of randomly oriented carbon nanotubes (CNT) sprayed onto an epoxy adhesive film, showed a positive increment in electrical resistance under tensile load, even though the transverse strains were negative. Other experiments included in [...] Read more.
Tests on a double lap bonded joint, with transverse strips of randomly oriented carbon nanotubes (CNT) sprayed onto an epoxy adhesive film, showed a positive increment in electrical resistance under tensile load, even though the transverse strains were negative. Other experiments included in this work involved placing longitudinal and transversal CNT sensors in a tensile loaded aluminum plate, and, as reported by other authors, the results confirm that the resistance change is not only dependent on the strains oriented with the electrode line, while the other strain components also influence the response. This behavior is quite different to that of conventional strain gages which have a near zero sensitivity to strains not aligned to the sensor direction. The dependence of the electrical response on all the strain components makes it quite difficult, possibly unfeasible, to experimentally determine the individual strain components with this kind of sensors; however, the manufacturing of aligned CNT sensors could deal with this issue. Full article
(This article belongs to the Special Issue Carbon Nanotube and Graphene-based Sensors)
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