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Polymer Based Electronic Devices and Sensors III

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A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Applications".

Deadline for manuscript submissions: 30 September 2024 | Viewed by 10520

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Special Issue Editor

Dr. Ming-Chung Wu

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Guest Editor

Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan 33302, Taiwan
Interests: nanomaterials synthesis; photocatalytic materials; photocatalysis applications; perovskite solar cells; VOC sensing materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue is motivated by the growing interest in the design, fabrication, and application of polymer-based electronic devices and sensors. In recent years, a variety of polymer-based compounds have been developed. Their novel chemical and physical properties extend their applications in different fields. As external stimuli, including pH, light radiation, heat, etc., are further applied to polymer-based materials, they may have reversible or irreversible changes in their physical and chemical properties.

This Special Issue on “Polymer Based Electronic Devices and Sensors” will collect new original research and review papers, with a special emphasis on the improved properties, innovative fabrication processes, and novel applications of functional polymer composites. We warmly invite researchers in this field to submit relevant manuscripts to this Special Issue of Polymers.

Dr. Ming-Chung Wu
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. Polymers 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 2700 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

conjugated/semiconducting polymers
conducting polymers
synthesis of conducting polymers
structure of conducting polymers
polymer electrolytes
polymer electronic devices
polymer solar cells
sensors

Published Papers (5 papers)

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Research

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14 pages, 4107 KiB

Open AccessArticle

Dielectric Characterization of Solutions of Galactomannan Extracted from Adenanthera pavonina L.: Effects of Purification and Ethanol Concentration

by Susana Devesa, Manuel P. F. Graça, Walajhone O. Pereira, Guilherme L. Santos, João F. da Silva Neto, Filipe M. B. Amaral, Imen Hammami, Fernando Mendes and Ana A. M. Macêdo

Polymers 2024, 16(11), 1476; https://doi.org/10.3390/polym16111476 - 23 May 2024

Viewed by 274

Abstract

Galactomannans are polysaccharides obtained from legume seed extraction. They present a chemical structure consisting of D-mannose chains linked by glycosidic bonds and galactose branches. The main focus lies in their use as thickeners in the food industry, aimed at improving the dielectric properties of food during heating processes within the radiofrequency and microwave ranges. In this work, the prepared galactomannan samples were electrically analyzed through impedance spectroscopy, which is a powerful physical technique. From the experimental measurements, the dielectric permittivity and loss tangent of the galactomannan solutions were analyzed and the electrical modulus formalism was used to study the dielectric relaxations. Crude galactomannans exhibited higher values of permittivity, conductivity, and losses compared to purified galactomannans. Increasing ethanol concentration in galactomannan purification causes an increase in the permittivity and conductivity of galactomannan solutions. In a 1% solution, at 1 kHz, the permittivity increased from 378.56 to 538.09, while in the 2% solution, this increase was from 656.22 to 1103.24. Regarding the conductivity, at the same frequency, the increase was from 1.6 × 10⁻³ to 3.3 × 10⁻³ Ω⁻¹m⁻¹ and from 2.9 × 10⁻³ to 5.5 × 10⁻³ Ω⁻¹m⁻¹, respectively. The rise of the ethanol concentration in galactomannan purification led to a decrease in the relaxation time, from 448.56 to 159.15 μs and from 224.81 to 89.50 μs in the solution with 1 and 2%, respectively. The results suggest that galactomannan from Adenanthera pavonina L. has potential for use in the food industry. Full article

(This article belongs to the Special Issue Polymer Based Electronic Devices and Sensors III)

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16 pages, 10920 KiB

Open AccessArticle

Investigation of Hybrid Electrodes of Polyaniline and Reduced Graphene Oxide with Bio-Waste-Derived Activated Carbon for Supercapacitor Applications

by Imen Benchikh, Abdelrahman Osama Ezzat, Lilia Sabantina, Youcef Benmimoun and Abdelghani Benyoucef

Polymers 2024, 16(3), 421; https://doi.org/10.3390/polym16030421 - 2 Feb 2024

Cited by 4 | Viewed by 1018

Abstract

Graphene-based materials have been widely studied in the field of supercapacitors. However, their electrochemical properties and applications are still restricted by the susceptibility of graphene-based materials to curling and agglomeration during production. This study introduces a facile method for synthesizing reduced graphene oxide (rGO) nanosheets and activated carbon based on olive stones (OS) with polyaniline (PAni) surface decoration for the development of supercapacitors. Several advanced techniques were used to examine the structural properties of the samples. The obtained PAni@OS−rGO (1:1) electrode exhibits a high electrochemical capacity of 582.6 F·g⁻¹ at a current density of 0.1 A·g⁻¹, and an energy density of 26.82 Wh·kg⁻¹; thus, it demonstrates potential for efficacious energy storage. In addition, this electrode material exhibits remarkable cycling stability, retaining over 90.07% capacitance loss after 3000 cycles, indicating a promising long cycle life. Overall, this research highlights the potential of biomass-derived OS in the presence of PAni and rGO to advance the development of high-performance supercapacitors. Full article

(This article belongs to the Special Issue Polymer Based Electronic Devices and Sensors III)

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13 pages, 1874 KiB

Open AccessArticle

Wearable Liquid Metal Composite with Skin-Adhesive Chitosan–Alginate–Chitosan Hydrogel for Stable Electromyogram Signal Monitoring

by Jaehyon Kim, Yewon Kim, Jaebeom Lee, Mikyung Shin and Donghee Son

Polymers 2023, 15(18), 3692; https://doi.org/10.3390/polym15183692 - 7 Sep 2023

Cited by 2 | Viewed by 1399

Abstract

In wearable bioelectronics, various studies have focused on enhancing prosthetic control accuracy by improving the quality of physiological signals. The fabrication of conductive composites through the addition of metal fillers is one way to achieve stretchability, conductivity, and biocompatibility. However, it is difficult to measure stable biological signals using these soft electronics during physical activities because of the slipping issues of the devices, which results in the inaccurate placement of the device at the target part of the body. To address these limitations, it is necessary to reduce the stiffness of the conductive materials and enhance the adhesion between the device and the skin. In this study, we measured the electromyography (EMG) signals by applying a three-layered hydrogel structure composed of chitosan–alginate–chitosan (CAC) to a stretchable electrode fabricated using a composite of styrene–ethylene–butylene–styrene and eutectic gallium-indium. We observed stable adhesion of the CAC hydrogel to the skin, which aided in keeping the electrode attached to the skin during the subject movement. Finally, we fabricated a multichannel array of CAC-coated composite electrodes (CACCE) to demonstrate the accurate classification of the EMG signals based on hand movements and channel placement, which was followed by the movement of the robot arm. Full article

(This article belongs to the Special Issue Polymer Based Electronic Devices and Sensors III)

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Review

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19 pages, 1905 KiB

Open AccessReview

Advances in Polymer Binder Materials for Lithium-Ion Battery Electrodes and Separators

by Siyeon Lee, Heejin Koo, Hong Suk Kang, Keun-Hwan Oh and Kwan Woo Nam

Polymers 2023, 15(23), 4477; https://doi.org/10.3390/polym15234477 - 21 Nov 2023

Cited by 1 | Viewed by 3840

Abstract

Lithium-ion batteries (LIBs) have become indispensable energy-storage devices for various applications, ranging from portable electronics to electric vehicles and renewable energy systems. The performance and reliability of LIBs depend on several key components, including the electrodes, separators, and electrolytes. Among these, the choice of binder materials for the electrodes plays a critical role in determining the overall performance and durability of LIBs. This review introduces polymer binders that have been traditionally used in the cathode, anode, and separator materials of LIBs. Furthermore, it explores the problems identified in traditional polymer binders and examines the research trends in next-generation polymer binder materials for lithium-ion batteries as alternatives. To date, the widespread use of N-methyl-2-pyrrolidone (NMP) as a solvent in lithium battery electrode production has been a standard practice. However, recent concerns regarding its high toxicity have prompted increased environmental scrutiny and the imposition of strict chemical regulations. As a result, there is a growing urgency to explore alternatives that are both environmentally benign and safer for use in battery manufacturing. This pressing need is further underscored by the rising demand for diverse binder research within the lithium battery industry. In light of the current emphasis on sustainability and environmental responsibility, it is imperative to investigate a range of binder options that can align with the evolving landscape of green and eco-conscious battery production. In this review paper, we introduce various binder options that can align with the evolving landscape of environmentally friendly and sustainable battery production, considering the current emphasis on battery performance enhancement and environmental responsibility. Full article

(This article belongs to the Special Issue Polymer Based Electronic Devices and Sensors III)

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19 pages, 26195 KiB

Open AccessReview

A Review of Polymer Dielectrics for Redistribution Layers in Interposers and Package Substrates

by Pratik Nimbalkar, Pragna Bhaskar, Mohanalingam Kathaperumal, Madhavan Swaminathan and Rao R. Tummala

Polymers 2023, 15(19), 3895; https://doi.org/10.3390/polym15193895 - 26 Sep 2023

Cited by 1 | Viewed by 3327

Abstract

The ever-increasing demand for faster computing has led us to an era of heterogeneous integration, where interposers and package substrates have become essential components for further performance scaling. High-bandwidth connections are needed for faster communication between logic and memory dies. There are several limitations to current generation technologies, and dielectric buildup layers are a key part of addressing those issues. Although there are several polymer dielectrics available commercially, there are numerous challenges associated with incorporating them into interposers or package substrates. This article reviewed the properties of polymer dielectric materials currently available, their properties, and the challenges associated with their fabrication, electrical performance, mechanical reliability, and electrical reliability. The current state-of-the-art is discussed, and guidelines are provided for polymer dielectrics for the next-generation interposers. Full article

(This article belongs to the Special Issue Polymer Based Electronic Devices and Sensors III)

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