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Polymers
Special Issues
Research Progress of Polymer-Based Sensors
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Research Progress of Polymer-Based Sensors

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

Deadline for manuscript submissions: closed (1 December 2023) | Viewed by 2511

Special Issue Editors

Dr. Hongsheng Xu

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Guest Editor
Industry-Education-Research Institute of Advanced Materials and Technology for Integrated Circuits, Anhui University, Hefei, China
Interests: surface acoustic wave sensors; FBAR; flexible electronics
Prof. Dr. Weipeng Xuan

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Guest Editor
Ministry of Education Key Laboratory of RF Circuits and Systems, College of Electronics & Information, Hangzhou Dianzi University, Hangzhou 310000, China
Interests: microdevices based on piezoelectric devices; wireless and passive sensors; self-powered sensors; RF MEMS devices and systems
Special Issues, Collections and Topics in MDPI journals
Dr. Xiangyu Zeng

E-Mail Website
Guest Editor
Hangzhou Institute of Technology, Xidian University, Xi'an, China
Interests: flexible and soft sensors; triboelectric nanogenerators; spintronic devices
Dr. Akeel Qadir

E-Mail Website
Guest Editor
School of Information Engineering, Xi’an Eurasia University, Xi’an 710065, China
Interests: flexible electronics; composite films; photodetectors; 2D materials heterostructure
Dr. Lin Shi

E-Mail Website
Guest Editor
Department of Mechanical & Aerospace Engineering, University of Missouri, Columbia, MO, USA
Interests: self-powered sensors; flexible electronics

Special Issue Information

Dear Colleagues,

Polymer sensors have gained significant attention in recent years due to their unique properties and potential applications in various fields such as healthcare, environmental monitoring, and consumer electronics. This Special Issue on the research progress of polymer sensors will be an excellent platform to share the latest advancements in this field and stimulate further research.

The following are some potential topics (not exhaustive) that can be included in this Special Issue:
Design and fabrication of polymer sensors: This topic can cover the development of different types of polymer sensors such as conductive, piezoelectric, and electrochemical sensors. The focus can be on the design and fabrication process, including the selection of materials, fabrication techniques, and the optimization of sensor performance.

Novel sensing mechanisms of polymer sensors: This topic can cover the exploration of new sensing mechanisms of polymer sensors. For example, the use of molecularly imprinted polymers (MIPs) or stimuli-responsive polymers can result in sensors with high selectivity and sensitivity.

Applications of polymer sensors in healthcare: Polymer sensors can have significant applications in healthcare, such as monitoring vital signs, detecting diseases, and drug delivery. This topic can cover the development of polymer sensors for these applications and their performance in real-world scenarios.
Applications of polymer sensors in environmental monitoring: Polymer sensors can also be used for environmental monitoring, such as detecting pollutants, monitoring water quality, and air quality. This topic can cover the development of polymer sensors for these applications and their performance in harsh environments.

Integration of polymer sensors with electronics: Polymer sensors can be integrated with electronics to enable real-time monitoring and data analysis. This topic can cover the development of integrated systems, including the design of electronic circuits, sensor data processing, and wireless communication. 

Dr. Hongsheng Xu
Prof. Dr. Weipeng Xuan
Dr. Xiangyu Zeng
Dr. Akeel Qadir
Dr. Lin Shi
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

  • polymer
  • polymer sensors
  • polymer substrate
  • polymer composites
  • molecularly imprinted polymer
  • conducting polymers
  • healthcare
  • flexible sensors
  • wearable sensors

Published Papers (2 papers)

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Research

10 pages, 6467 KiB  
Article
Flexible Film Bulk Acoustic Wave Filter Based on Poly(vinylidene fluoride-trifluorethylene)
by Xiangyu He, Jiaqi Lu, Feng Gao, Shurong Dong, Juan Li, Hao Jin and Jikui Luo
Polymers 2024, 16(1), 150; https://doi.org/10.3390/polym16010150 - 3 Jan 2024
Cited by 1 | Viewed by 765
Abstract
Poly(vinylidene fluoride-trifluorethylene) (P(VDF-TrFE)) has promising potential applications in radio-frequency filters due to their excellent piezoelectric properties, flexibility, and stability. In this paper, a flexible film bulk acoustic wave filter is investigated based on P(VDF-TrFE) as piezoelectric film. A new method based on three-step [...] Read more.
Poly(vinylidene fluoride-trifluorethylene) (P(VDF-TrFE)) has promising potential applications in radio-frequency filters due to their excellent piezoelectric properties, flexibility, and stability. In this paper, a flexible film bulk acoustic wave filter is investigated based on P(VDF-TrFE) as piezoelectric film. A new method based on three-step annealing is developed to efficiently remove the porosity inside the P(VDF-TrFE) films so as to improve its properties. The obtained film achieved high β-phase content beyond 80% and a high piezoelectric coefficient of 27.75 pm/V. Based on the low porosity β-phase films, a flexible wide-band RF filter is designed, which consists of a bulk acoustic wave resonator and lumped inductor-capacitor elements as a hybrid configuration. The resonator sets the filter’s center frequency, while the lumped LC-based matching network extends the bandwidth and enhances out-of-band rejection. The testing results of the proposed wide-band filter show its good performance, with 12.5% fractional bandwidth and an insertion loss of 3.1 dB. To verify the possibility of folding and stacking the flexible bulk acoustic wave devices for high-density multi-filter integration in MIMO communication, bending tests of the filter are also conducted with the bending strain range up to 5500 με. The testing results show no noticeable performance degradation after four bending cycles. This work demonstrates the potential of β-phase P(VDF-TrFE) bulk acoustic wave filters to expand the scope of future flexible radio-frequency filter applications. Full article
(This article belongs to the Special Issue Research Progress of Polymer-Based Sensors)
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15 pages, 4898 KiB  
Article
Room-Temperature NH3 Gas Surface Acoustic Wave (SAW) Sensors Based on Graphene/PPy Composite Films Decorated by Au Nanoparticles with ppb Detection Ability
by Chi-Yen Shen, Tien-Tsan Hung, Yao-Wei Chuang, Shao-Kai Lai and Chi-Ming Tai
Polymers 2023, 15(22), 4353; https://doi.org/10.3390/polym15224353 - 8 Nov 2023
Cited by 1 | Viewed by 1066
Abstract
Exhaled human breath analysis has great potential for the diagnosis of diseases in non-invasive way. The 13C-Urea breath test for the diagnosis of Helicobacter pylori infection indicates the ammonia concentration of 50–400 ppb in the breath. This work successfully developed a surface [...] Read more.
Exhaled human breath analysis has great potential for the diagnosis of diseases in non-invasive way. The 13C-Urea breath test for the diagnosis of Helicobacter pylori infection indicates the ammonia concentration of 50–400 ppb in the breath. This work successfully developed a surface acoustic wave (SAW) resonator based on graphene/polypyrrole composite films decorated by gold nanoparticles (AuNPs–G/PPy) with sensitivity and selectivity to detect ammonia in parts-per-billion concentrations, which is promising for the accurate diagnosis of H. pylori infection. XRD, EDS, and SEM characterized the AuNPs–G/PPy nanocomposites, providing comprehensive insights into their structural, compositional, and morphological properties. The gas-sensing capabilities of the fabricated SAW sensors were extensively investigated, focusing on their response to NH3 gas at ambient temperature. The concentration of ammonia gas was effectively quantified by monitoring the frequency shift of the SAW device. Notably, our developed SAW sensor demonstrated outstanding sensitivity, selectivity, repeatability, and reproducibility for 50–1000 ppb NH3 in dry air. The excellent sensing performance of the AuNPs–G/PPy hybrid composite film can be attributed to the synergistic effects of graphene’s superior conductivity, the catalytic properties of gold nanoparticles, and the conductivity sensitization facilitated by electron-hole recombination on the polypyrrole surface. Full article
(This article belongs to the Special Issue Research Progress of Polymer-Based Sensors)
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