Printed Function Sensors and Materials

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Chemical and Molecular Sciences".

Deadline for manuscript submissions: 20 April 2024 | Viewed by 7201

Special Issue Editor

Department of Flexible and Printable Electronics, LANL-JBNU Engineering Institute-Korea, Jeonbuk National University, Jeonju 54896, Korea
Interests: printed electronics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In the era of the 4th Industrial Revolution, the printed electronics market is gradually expanding, and the advantages of printed electronic sensors are highlighted by grafting with existing sensing technologies as well as IoT (Internet of Things) systems and smart packaging. This trend is supported by certain features of printed functional sensors, such as the utilization of various substrates, low-cost processes, and the possibility of mass productivity.

This Special Issue focuses on research to produce a variety of functional sensors using a printing or roll-to-roll process. It accepts materials with original and creative research findings and review articles related to printed functional sensors and allows readers to learn more about the technology associated with their availability to help everyone.

Therefore, we welcome articles that report the latest technology on sensor materials, concepts, fabrication and testing technology, printing on new substrates and application-oriented print sensor systems, and closely related topics.

Prof. Dr. Sooman Lim
Guest Editor

Manuscript Submission Information

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 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

  • printed functional sensor
  • flexible/stretchable substrate
  • inkjet printing
  • screen printing
  • gravure printing
  • EHD printing
  • roll-to-roll technology
  • wearable devices
  • smart packaging
  • IoT technology

Published Papers (3 papers)

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Research

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11 pages, 2797 KiB  
Communication
Reconfigurable Terahertz Moiré Frequency Selective Surface Based on Additive Manufacturing Technology
Appl. Sci. 2023, 13(5), 3302; https://doi.org/10.3390/app13053302 - 05 Mar 2023
Cited by 3 | Viewed by 1976
Abstract
We designed and fabricated a terahertz (THz) frequency selective surface (FSS) based on two distinct additive manufacturing technologies, namely, printable electronics (PE) and three-dimensional (3D) printing. Silver nanoparticle ink was printed on a polyethylene terephthalate (PET) substrate utilizing a large-scale roll-to-roll industrial PE [...] Read more.
We designed and fabricated a terahertz (THz) frequency selective surface (FSS) based on two distinct additive manufacturing technologies, namely, printable electronics (PE) and three-dimensional (3D) printing. Silver nanoparticle ink was printed on a polyethylene terephthalate (PET) substrate utilizing a large-scale roll-to-roll industrial PE technique with a flexographic printed unit, while the 3D-printed THz FSS was fabricated based on a powder bed fusion-selective laser melting system. The filtering characteristics of both types of FSS were verified through calculation, simulation, and experiments. Furthermore, the rotational tuning approach was applied to two identical FSS to form reconfigurable FSS which could be defined as Moiré FSS. Based on the numerical results obtained, our proposed technique which used a PE-based Moiré FSS achieves a 58% modulation depth at 0.25 THz, while experimental verification found a modulation depth of 41% at 0.22 THz, confirming that its adoption is simple and cost-effective. To the best of our knowledge, this is the first demonstration of a Moiré reconfigurable printed FSS operating in the THz region. Full article
(This article belongs to the Special Issue Printed Function Sensors and Materials)
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Review

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15 pages, 5960 KiB  
Review
Review of Flexible Supercapacitors Using Carbon Nanotube-Based Electrodes
Appl. Sci. 2023, 13(5), 3290; https://doi.org/10.3390/app13053290 - 04 Mar 2023
Cited by 10 | Viewed by 2089
Abstract
Carbon nanotube (CNT)-based electrodes in flexible supercapacitors have received significant attention in recent years. Carbon nanotube fiber fabrics (CNT-FF) have emerged as promising materials due to their high surface area, excellent conductivity, and mechanical strength. Researchers have attempted to improve the energy density [...] Read more.
Carbon nanotube (CNT)-based electrodes in flexible supercapacitors have received significant attention in recent years. Carbon nanotube fiber fabrics (CNT-FF) have emerged as promising materials due to their high surface area, excellent conductivity, and mechanical strength. Researchers have attempted to improve the energy density and rate performance of CNT-FF supercapacitor electrodes through various strategies, such as functionalization with conductive materials like MnO2 nanoparticles and/or incorporation of graphene into them. In addition, the utilization of CNTs in combination with thin metal film electrodes has also gained widespread attention. Research has focused on enhancing electrochemical performance through functionalizing CNTs with conductive materials such as graphene and metal nanoparticles, or by controlling their morphology. This review paper will discuss the recent developments in supercapacitor technology utilizing carbon nanotube-based electrodes, including CNT fiber fabrics and CNTs on thin metal film electrodes. Various strategies employed for improving energy storage performance and the strengths and weaknesses of these strategies will be discussed. Finally, the paper will conclude with a discussion on the challenges that need to be addressed in order to realize the full potential of carbon nanotube-based electrodes in supercapacitor technology. Full article
(This article belongs to the Special Issue Printed Function Sensors and Materials)
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28 pages, 4656 KiB  
Review
Strategic Development of Piezoelectric Nanogenerator and Biomedical Applications
Appl. Sci. 2023, 13(5), 2891; https://doi.org/10.3390/app13052891 - 23 Feb 2023
Cited by 9 | Viewed by 2758
Abstract
Nanogenerators are the backbone of self-powered systems and they have been explored for application in miniaturized biomedical devices, such as pacemakers. Piezoelectric nanogenerators (PENGs) have several advantages, including their high efficiency, low cost, and facile fabrication processes, which have made them one of [...] Read more.
Nanogenerators are the backbone of self-powered systems and they have been explored for application in miniaturized biomedical devices, such as pacemakers. Piezoelectric nanogenerators (PENGs) have several advantages, including their high efficiency, low cost, and facile fabrication processes, which have made them one of the most promising nano power sources for converting mechanical energy into electrical energy. In this study, we review the recent major progress in the field of PENGs. Various approaches, such as morphology tuning, doping, and compositing active materials, which have been explored to improve the efficiency of PENGs, are discussed in depth. Major emphasis is given to material tailoring strategies and PENG fabrication approaches, such as 3D printing, and their applications in the biomedical field. Moreover, hybrid nanogenerators (HNG), which have evolved over the last few years, are discussed. Finally, the current key challenges and future directions in this field are presented. Full article
(This article belongs to the Special Issue Printed Function Sensors and Materials)
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