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New Advances in 3D Printed Material-Based Sensors
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New Advances in 3D Printed Material-Based Sensors

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

Deadline for manuscript submissions: closed (30 June 2024) | Viewed by 4477

Special Issue Editor

Dr. Ramin Banan Sadeghian

E-Mail Website
Guest Editor
Department of Micro Engineering, Kyoto University, Kyoto, Japan
Interests: microsensors; biosensors; microphysiological systems; micro and nanofabrication; iPSC-derived organoids; electron devices; thermoelectrics; sustainable energy harvesting
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

A new era of innovation in numerous industries has begun as a result of recent significant developments in the field of 3D-printed-material-based sensors. The use of innovative materials, such as graphene and conductive polymers, has resulted in one of the most remarkable advancements in the field, the development of highly sensitive and adaptable sensors. These materials offer improved electrical conductivity and enhanced sensing capabilities, making them ideal for applications in healthcare, environmental monitoring, and robotics. Additionally, improvements in multi-material 3D printing methods have made it possible to integrate numerous sensor components into intricate structures without any visible gaps, increasing design flexibility and customization. In addition, the miniaturization of 3D printing technology has facilitated the creation of small, wearable sensors that can collect health data in real-time and monitor vital signs. These new developments will enable 3D-printed-material-based sensors to transform industries and promote the development of smart technologies.

Therefore, this Special Issue mainly focuses on the printing technologies for sensors and their applications in various industries.

Dr. Ramin Banan Sadeghian
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

  • 3D printing of devices
  • 3D printing of materials
  • 3D printing of actuators
  • 3D printing of sensors
  • printing processes

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Published Papers (3 papers)

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Research

16 pages, 11090 KiB  
Article
A Simple Method to Manufacture a Force Sensor Array Based on a Single-Material 3D-Printed Piezoresistive Foam and Metal Coating
by Claude Humbert, Mathis Barriol, Sakine Deniz Varsavas, Pascal Nicolay and Mathias Brandstötter
Sensors 2024, 24(12), 3854; https://doi.org/10.3390/s24123854 - 14 Jun 2024
Cited by 1 | Viewed by 1075
Abstract
Nowadays, 3D printing is becoming an increasingly common option for the manufacturing of sensors, primarily due to its capacity to produce intricate geometric shapes. However, a significant challenge persists in integrating multiple materials during printing, for various reasons. In this study, we propose [...] Read more.
Nowadays, 3D printing is becoming an increasingly common option for the manufacturing of sensors, primarily due to its capacity to produce intricate geometric shapes. However, a significant challenge persists in integrating multiple materials during printing, for various reasons. In this study, we propose a straightforward approach that combines 3D printing with metal coating to create an array of resistive force sensors from a single material. The core concept involves printing a sensing element using a conductive material and subsequently separating it into distinct parts using metal-coated lines connected to the electrical ground. This post-printing separation process involves manual intervention utilizing a stencil and metallic spray. The primary obstacle lies in establishing a sufficient contact surface between the sprayed metal and the structure, to ensure effective isolation among different zones. To address this challenge, we suggest employing a lattice structure to augment the contact surface area. Through experimental validation, we demonstrate the feasibility of fabricating two sensing elements from a single-material 3D-printed structure, with a maximum electrical isolation ratio between the sensors of above 30. These findings hold promise for the development of a new generation of low-tech 3D-printed force/displacement sensor arrays. Full article
(This article belongs to the Special Issue New Advances in 3D Printed Material-Based Sensors)
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18 pages, 25487 KiB  
Article
3D-Printed Conformal Meta-Lens with Multiple Beam-Shaping Functionalities for Mm-Wave Sensing Applications
by Noureddine Melouki, Fahad Ahmed, Peyman PourMohammadi, Hassan Naseri, Mohamed Sedigh Bizan, Amjad Iqbal and Tayeb A. Denidni
Sensors 2024, 24(9), 2826; https://doi.org/10.3390/s24092826 - 29 Apr 2024
Cited by 1 | Viewed by 1983
Abstract
In this paper, a 3D conformal meta-lens designed for manipulating electromagnetic beams via height-to-phase control is proposed. The structure consists of a 40 × 20 array of tunable unit cells fabricated using 3D printing, enabling full 360° phase compensation. A novel automatic synthesizing [...] Read more.
In this paper, a 3D conformal meta-lens designed for manipulating electromagnetic beams via height-to-phase control is proposed. The structure consists of a 40 × 20 array of tunable unit cells fabricated using 3D printing, enabling full 360° phase compensation. A novel automatic synthesizing method (ASM) with an integrated optimization process based on genetic algorithm (GA) is adopted here to create the meta-lens. Simulation using CST Microwave Studio and MATLAB reveals the antenna’s beam deflection capability by adjusting phase compensations for each unit cell. Various beam scanning techniques are demonstrated, including single-beam, dual-beam generation, and orbital angular momentum (OAM) beam deflection at different angles of 0°, 10°, 15°, 25°, 30°, and 45°. A 3D-printed prototype of the dual-beam feature has been fabricated and measured for validation purposes, with good agreement between both simulation and measurement results, with small discrepancies due to 3D printing’s low resolution and fabrication errors. This meta-lens shows promise for low-cost, high-gain beam deflection in mm-wave wireless communication systems, especially for sensing applications, with potential for wider 2D beam scanning and independent beam deflection enhancements. Full article
(This article belongs to the Special Issue New Advances in 3D Printed Material-Based Sensors)
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14 pages, 21462 KiB  
Article
Frequency- and Temperature-Dependent Uncertainties in Hysteresis Measurements of a 3D-Printed FeSi wt6.5% Material
by Bence Kocsis and Tamás Orosz
Sensors 2024, 24(9), 2738; https://doi.org/10.3390/s24092738 - 25 Apr 2024
Viewed by 1006
Abstract
Additive manufacturing of soft magnetic materials is a promising technology for creating topologically optimized electrical machines. High-performance electrical machines can be made from high-silicon-content FeSi alloys. Fe-6.5wt%Si material has exceptional magnetic properties; however, manufacturing this steel with the classical cold rolling methodology is [...] Read more.
Additive manufacturing of soft magnetic materials is a promising technology for creating topologically optimized electrical machines. High-performance electrical machines can be made from high-silicon-content FeSi alloys. Fe-6.5wt%Si material has exceptional magnetic properties; however, manufacturing this steel with the classical cold rolling methodology is not possible due to the brittleness of this material. Laser powder bed fusion technology (L-PBF) offers a solution to this problem. Finding the optimal printing parameters is a challenging task. Nevertheless, it is crucial to resolve the brittleness of the created materials so they can be used in commercial applications. The temperature dependence of magnetic hysteresis properties of Fe-6.5wt%Si materials is presented in this paper. The magnetic hysteresis properties were examined from 20 °C to 120 °C. The hysteresis measurements were made by a precision current generator–based hysteresis measurement tool, which uses fast Fourier transformation–based filtering techniques to increase the accuracy of the measurements. The details of the applied scalar hysteresis sensor and the measurement uncertainties were discussed first in the paper; then, three characteristic points of the static hysteresis curve of the ten L-PBF-manufactured identical toroidal cores were investigated and compared at different temperatures. These measurements show that, despite the volumetric ratio of the porosities being below 0.5%, the mean crack length in the samples is not significant for the examined samples. These small defects can cause a significant 5% decrement in some characteristic values of the examined hysteresis curve. Full article
(This article belongs to the Special Issue New Advances in 3D Printed Material-Based Sensors)
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