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Polymers
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Polymer-Based Sensor
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Polymer-Based Sensor

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Biomacromolecules, Biobased and Biodegradable Polymers".

Deadline for manuscript submissions: closed (28 February 2022) | Viewed by 16776

Special Issue Editors

Dr. Seong J. Cho

E-Mail Website
Guest Editor
School of Mechanical Engineering, Chungnam National University, Daejeon 34134, Republic of Korea
Interests: sensor; micro; nanostructure; biomimetics; functional surface; MEMS
Special Issues, Collections and Topics in MDPI journals
Dr. Seong Kyung Hong

E-Mail Website1 Website2
Guest Editor
Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
Interests: MEMS sensor; flexible substrates; micro/nanostructure; surface wettability
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Geon Hwee Kim

E-Mail Website
Guest Editor
School of Mechanical Engineering, Chungbuk National University, Cheongju 37673, Republic of Korea
Interests: sensors; precision manufacturing; semiconductor process; additive manufacturing; biomimetics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear colleagues,

Soft deformable electronics have been attracting intensive attention during the past decade. Many researchers have fabricated flexible/stretchable displays, tactile sensors for electronics to generate buckled structures, and printing of elastic conductive composites for energy storage.

 Sensors with excellent flexibility and stretchability are crucial components that can provide health monitoring systems with the capability of continuously tracking various signals including wrist pulse, heart rate, and blood glucose, and without conspicuous uncomfortableness and invasiveness. Therefore, there have been considerable efforts to design more conforming, miniaturized, and skin-attachable health monitoring sensors. Controlling nano-/micro-scale morphologies of organic, inorganic, and hybrid materials can allow for the development of characteristics such as high flexibility. However, it is still a significant challenge to develop skin-attachable and monolithic healthcare devices composed of flexible and multifunctional sensors, stretchable interconnections, wireless communication systems, and sustainable power sources.

 Potential topics include but are not limited to the following:

  • Stretchable/flexible sensors;
  • Functional/stretchable polymer materials with applications in sensor technology;
  • MEMS/NEMS for flexible/stretchable sensors;
  • Signal transmission or wireless systems for flexible/stretchable sensors;
  • Machine learning for polymer-based electronics;
  • Healthcare monitoring and diagnosis applications of sensors;
  • Review articles on the current properties and applications of polymer-based sensors.

Prof. Dr. Seong J. Cho
Dr. Seong Kyung Hong
Prof. Dr. Geon Hwee Kim
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 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

  • flexible sensor
  • stretchable electronics
  • MEMS
  • healthcare monitoring
  • micro/nanostructure

Published Papers (5 papers)

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Research

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16 pages, 2421 KiB  
Article
Novel Aminosilane (APTES)-Grafted Polyaniline@Graphene Oxide (PANI-GO) Nanocomposite for Electrochemical Sensor
by Raja Saad Alruwais, Waheed A. Adeosun, Hadi M. Marwani, Mohammad Jawaid, Abdullah M. Asiri and Anish Khan
Polymers 2021, 13(15), 2562; https://0-doi-org.brum.beds.ac.uk/10.3390/polym13152562 - 31 Jul 2021
Cited by 19 | Viewed by 3252
Abstract
Lead is a potentially toxic element (PTE) that has several adverse medical effects in humans. Its presence in the environment became prominent due to anthropogenic activities. The current study explores the use of newly developed composite materials (organic–inorganic hybrid) based on PANI-GO-APTES for [...] Read more.
Lead is a potentially toxic element (PTE) that has several adverse medical effects in humans. Its presence in the environment became prominent due to anthropogenic activities. The current study explores the use of newly developed composite materials (organic–inorganic hybrid) based on PANI-GO-APTES for electrochemical detection of Pb2+ in aqueous solution. The composite material (PANI-GO-APTES) was synthesized by chemical method and was characterized with SEM, XPS, XEDS, XRD, TGA, FTIR, EIS and CV. The result of characterization indicates the successful synthesis of the intended material. The PANI-GO-APTES was successfully applied for electrochemical detection of Pb2+ using cyclic voltammetry and linear sweep voltammetry method. The limit of detection of Pb2+ was 0.0053 µM in the linear range of 0.01 µM to 0.4 µM. The current response produced during the electrochemical reduction of Pb2+ catalyzed by PANI-GO-APTES was also very repeatable, reproducible and rapid. The application of PANI-GO-APTES-modified GCE in real sample analysis was also established. Therefore, PANI-GO-APTES is presented as a potential Pb2+ sensor for environmental and human health safety. Full article
(This article belongs to the Special Issue Polymer-Based Sensor)
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13 pages, 2083 KiB  
Article
Effect of Spherical Elements of Biosensors and Bioreactors on the Physicochemical Properties of a Peroxidase Protein
by Yuri D. Ivanov, Vadim Yu. Tatur, Tatyana O. Pleshakova, Ivan D. Shumov, Andrey F. Kozlov, Anastasia A. Valueva, Irina A. Ivanova, Maria O. Ershova, Nina D. Ivanova, Victor V. Repnikov, Igor N. Stepanov and Vadim S. Ziborov
Polymers 2021, 13(10), 1601; https://0-doi-org.brum.beds.ac.uk/10.3390/polym13101601 - 15 May 2021
Cited by 10 | Viewed by 2025
Abstract
External electromagnetic fields are known to be able to concentrate inside the construction elements of biosensors and bioreactors owing to reflection from their surface. This can lead to changes in the structure of biopolymers (such as proteins), incubated inside these elements, thus influencing [...] Read more.
External electromagnetic fields are known to be able to concentrate inside the construction elements of biosensors and bioreactors owing to reflection from their surface. This can lead to changes in the structure of biopolymers (such as proteins), incubated inside these elements, thus influencing their functional properties. Our present study concerned the revelation of the effect of spherical elements, commonly employed in biosensors and bioreactors, on the physicochemical properties of proteins with the example of the horseradish peroxidase (HRP) enzyme. In our experiments, a solution of HRP was incubated within a 30 cm-diameter titanium half-sphere, which was used as a model construction element. Atomic force microscopy (AFM) was employed for the single-molecule visualization of the HRP macromolecules, adsorbed from the test solution onto mica substrates in order to find out whether the incubation of the test HRP solution within the half-sphere influenced the HRP aggregation state. Attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR) was employed in order to reveal whether the incubation of HRP solution within the half-sphere led to any changes in its secondary structure. In parallel, spectrophotometry-based estimation of the HRP enzymatic activity was performed in order to find out if the HRP active site was affected by the electromagnetic field under the conditions of our experiments. We revealed an increased aggregation of HRP after the incubation of its solution within the half-sphere in comparison with the control sample incubated far outside the half-sphere. ATR-FTIR allowed us to reveal alterations in HRP’s secondary structure. Such changes in the protein structure did not affect its active site, as was confirmed by spectrophotometry. The effect of spherical elements on a protein solution should be taken into account in the development of the optimized design of biosensors and bioreactors, intended for performing processes involving proteins in biomedicine and biotechnology, including highly sensitive biosensors intended for the diagnosis of socially significant diseases in humans (including oncology, cardiovascular diseases, etc.) at early stages. Full article
(This article belongs to the Special Issue Polymer-Based Sensor)
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9 pages, 1975 KiB  
Article
Fabrication of a Plasmonic Nanoantenna Array Using Metal Deposition on Polymer Nanoimprinted Nanodots for an Enhanced Fluorescence Substrate
by Jun Kim, Naseem Abbas, Seongmin Lee, Jeongwoo Yeom, Md Ali Asgar, Mohsin Ali Badshah, Xun Lu, Young Kyu Kim and Seok-Min Kim
Polymers 2021, 13(1), 48; https://0-doi-org.brum.beds.ac.uk/10.3390/polym13010048 - 25 Dec 2020
Cited by 9 | Viewed by 2766
Abstract
A simple and cost-effective method is proposed herein for a plasmonic nanoantenna array (PNAA) for the fabrication of metal-enhanced fluorescence (MEF) substrates in which fluorophores interact with the enhanced electromagnetic field generated by a localized surface plasmon to provide a higher fluorescence signal. [...] Read more.
A simple and cost-effective method is proposed herein for a plasmonic nanoantenna array (PNAA) for the fabrication of metal-enhanced fluorescence (MEF) substrates in which fluorophores interact with the enhanced electromagnetic field generated by a localized surface plasmon to provide a higher fluorescence signal. The PNAA is fabricated by the deposition of a silver (Ag) layer on an ultraviolet (UV) nanoimprinted nanodot array with a pitch of 400 nm, diameter of 200 nm, and height of 100 nm. During deposition, raised Ag nanodisks and a lower Ag layer are, respectively, formed on the top and bottom of the imprinted nanodot array, and the gap between these Ag layers acts as a plasmonic nanoantenna. Since the thickness of the gap within the PNAA is influenced by the thickness of Ag deposition, the effects of the latter upon the geometrical properties of the fabricated PNAA are examined, and the electromagnetic field intensity distributions of PNAAs with various Ag thicknesses are simulated. Finally, the fluorescence enhancement factor (FEF) of the fabricated PNAA MEF substrate is measured using spotted Cy5-conjugated streptavidin to indicate a maximum enhancement factor of ~22× for the PNAA with an Ag layer thickness of 75 nm. The experimental results are shown to match the simulated results. Full article
(This article belongs to the Special Issue Polymer-Based Sensor)
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Review

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32 pages, 12906 KiB  
Review
Flexible Sensory Systems: Structural Approaches
by Chan Park, Byeongjun Lee, Jungmin Kim, Haran Lee, Jeongbeom Kang, Jongwon Yoon, Jonghyeon Ban, Chiwon Song and Seong J. Cho
Polymers 2022, 14(6), 1232; https://0-doi-org.brum.beds.ac.uk/10.3390/polym14061232 - 18 Mar 2022
Cited by 5 | Viewed by 3127
Abstract
Biology is characterized by smooth, elastic, and nonplanar surfaces; as a consequence, soft electronics that enable interfacing with nonplanar surfaces allow applications that could not be achieved with the rigid and integrated circuits that exist today. Here, we review the latest examples of [...] Read more.
Biology is characterized by smooth, elastic, and nonplanar surfaces; as a consequence, soft electronics that enable interfacing with nonplanar surfaces allow applications that could not be achieved with the rigid and integrated circuits that exist today. Here, we review the latest examples of technologies and methods that can replace elasticity through a structural approach; these approaches can modify mechanical properties, thereby improving performance, while maintaining the existing material integrity. Furthermore, an overview of the recent progress in wave/wrinkle, stretchable interconnect, origami/kirigami, crack, nano/micro, and textile structures is provided. Finally, potential applications and expected developments in soft electronics are discussed. Full article
(This article belongs to the Special Issue Polymer-Based Sensor)
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12 pages, 2363 KiB  
Review
Additive Manufacturing of Sensors for Military Monitoring Applications
by David T. Bird and Nuggehalli M. Ravindra
Polymers 2021, 13(9), 1455; https://0-doi-org.brum.beds.ac.uk/10.3390/polym13091455 - 30 Apr 2021
Cited by 19 | Viewed by 4458
Abstract
The US Department of Defense (DoD) realizes the many uses of additive manufacturing (AM) as it has become a common fabrication technique for an extensive range of engineering components in several industrial sectors. 3D Printed (3DP) sensor technology offers high-performance features as a [...] Read more.
The US Department of Defense (DoD) realizes the many uses of additive manufacturing (AM) as it has become a common fabrication technique for an extensive range of engineering components in several industrial sectors. 3D Printed (3DP) sensor technology offers high-performance features as a way to track individual warfighters on the battlefield, offering protection from threats such as weaponized toxins, bacteria or virus, with real-time monitoring of physiological events, advanced diagnostics, and connected feedback. Maximum protection of the warfighter gives a distinct advantage over adversaries by providing an enhanced awareness of situational threats on the battle field. There is a need to further explore aspects of AM such as higher printing resolution and efficiency, with faster print times and higher performance, sensitivity and optimized fabrication to ensure that soldiers are more safe and lethal to win our nation’s wars and come home safely. A review and comparison of various 3DP techniques for sensor fabrication is presented. Full article
(This article belongs to the Special Issue Polymer-Based Sensor)
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