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Coatings
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Enhanced Thin-Film Application on Sensors
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Enhanced Thin-Film Application on Sensors

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Thin Films".

Deadline for manuscript submissions: closed (20 September 2023) | Viewed by 4215

Special Issue Editors

Dr. Heming Wei

E-Mail Website
Guest Editor
Key Laboratory of Specialty Fiber Optics and Optical Access Networks, School of Communication & Information Engineering, Shanghai University, Shanghai, China
Interests: two-photon direct laser writing; photonic sensors; fiber-optics
Special Issues, Collections and Topics in MDPI journals
Dr. Yanming Sun

E-Mail
Guest Editor
Lab of Artificial Microstructures for Optoelectronics (LAMO), Shenzhen University, Shenzhen, China
Interests: synthesis; photoelectric properties; photocatalytic properties; devices applications of the spiral carbon-based nanocomposite
Dr. Yi Xu

E-Mail Website
Guest Editor
School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, China
Interests: plasmonics; surface plasmon resonance; optical sensors; 2D materials; cavity optomechanics

Special Issue Information

Dear Colleagues,

With the development of thin-film technologies, ranging from chemical vapor deposition (CVD) or atomic layer deposition (ALD) to, more recently, 3D printings, many thin-film-based devices have been designed and fabricated for various sensing applications, since they can provide specific physical and chemical properties compared with bulk materials. Additionally, the use of advanced nanomaterials can further broaden thin-film applications on sensors. For example, at the nano/microscopic level, thin films of metals have very different mechanical properties compared to the bulk of materials, and the polymer-based thin films show a good flexibility, which can broaden the research for different systems and applications. Due to their unique properties, thin films as sensing elements are very sensitive to changes in the surrounding environment; they can be utilized for designing a specific sensor for the detection of gas, humidity, pressure, temperature and acoustic waves, etc. Therefore, it is very important to understand the sensing mechanisms, fabrication technologies, characteristics, as well as the applications.

Therefore, in this Special Issue, we welcome all contributions of original research and review articles, which focus on the development of fabrication, nanomaterials, methods, sensors and applications in theoretical, modeling and experimental aspects related to enhanced thin films. The scope of this Special Issue encompasses, but is not restricted to, the following list:

  • Nanomaterial/2D material-based devices;
  • Micro-nano-optical sensing devices;
  • Piezoelectric devices;
  • Surface plasmon resonance sensors;
  • Acoustic/ultrasonic sensors;
  • Biomolecular sensors;
  • Chemical sensors.

We look forward to receiving your contributions.

Dr. Heming Wei
Dr. Yanming Sun
Dr. Yi Xu
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. Coatings is an international peer-reviewed open access monthly 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.

Published Papers (3 papers)

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Research

9 pages, 3318 KiB  
Article
Carbon Nanocoil-Based Photothermal Conversion Carrier for Microbubble Transport
by Yuli Liu, Rui Sun, Lixuan Li, Jian Shen and Lujun Pan
Coatings 2023, 13(8), 1392; https://doi.org/10.3390/coatings13081392 - 08 Aug 2023
Viewed by 721
Abstract
Carbon nanocoil (CNC), a kind of quasi-one-dimensional carbon nanomaterial with a unique micro-scale helical structure, has wide application prospects in biological and environmental governance fields, due to its excellent photothermal conversion characteristics. We combine a carbon nanocoil as the laser irradiation carrier (i.e., [...] Read more.
Carbon nanocoil (CNC), a kind of quasi-one-dimensional carbon nanomaterial with a unique micro-scale helical structure, has wide application prospects in biological and environmental governance fields, due to its excellent photothermal conversion characteristics. We combine a carbon nanocoil as the laser irradiation carrier (i.e., the substance for absorbing light energy and converting light energy into heat to allow the creation of microbubbles) and a light-induced method to realize the radial short-distance transport of microbubbles. The results confirm that controlling the size of the microbubbles by laser power enables the radial transport of multiple microbubbles in a row. Light-induced CNC allows the creation of microbubbles at the start of the transport and the elimination of the microbubbles at the end of the transport, and the distance of transport between the laser irradiation site on the CNC and the location of the bubbles disappearing ranges from 10 µm to 30 µm. The circulation process of creating, transporting, and eliminating bubbles is expected to become a promising technology for soil and groundwater remediation. Full article
(This article belongs to the Special Issue Enhanced Thin-Film Application on Sensors)
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14 pages, 9226 KiB  
Article
Ring-Core Photonic Crystal Fiber Sensor Based on SPR for Extra-Wide Refractive Index Detection
by Jie He, Jianxin Wang, Lin Yang, Jingwei Lv, Wei Liu, Qiang Liu, Paul K. Chu and Chao Liu
Coatings 2023, 13(7), 1207; https://doi.org/10.3390/coatings13071207 - 05 Jul 2023
Cited by 2 | Viewed by 1159
Abstract
Spurred by the rapid development of fiber optic sensing technology, photonic crystal fiber (PCF) sensors based on surface plasmon resonance (SPR) have received widespread attention. However, they can only detect a narrow range, and the coating process is complex. Herein, a wide-range SPR [...] Read more.
Spurred by the rapid development of fiber optic sensing technology, photonic crystal fiber (PCF) sensors based on surface plasmon resonance (SPR) have received widespread attention. However, they can only detect a narrow range, and the coating process is complex. Herein, a wide-range SPR sensor is designed. It consists of a ring-core PCF filled with plasmonic materials. Compared to the process of depositing a coating inside the air hole, the analyte and gold nanowires fill our PCF, thus simplifying the manufacturing complexity. The ring-core structure enhances the directional power transmission between the guided mode and the surface plasmon polariton (SPP) mode. The sensor is numerically analyzed using the finite element method (FEM). The results show that the PCF-SPR sensor has a wavelength sensitivity and amplitude sensitivity of 40,000 nm/RIU and 2141 RIU−1, and the resolution is 2.5 × 10−6 RIU−1 for the detection range of 1.13–1.45. The high-sensitivity sensor boasting a wide refractive index detection range performs better than conventional solid-core PCF-SPR sensors, boding well for biochemical sensing. Full article
(This article belongs to the Special Issue Enhanced Thin-Film Application on Sensors)
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10 pages, 3155 KiB  
Article
Carbon Nanocoils and Polyvinyl Alcohol Composite Films for Fiber-Optic Fabry–Perot Acoustic Sensors
by Yanming Sun, Zhe Dong, Zhezhe Ding, Neng Wang, Lei Sun, Heming Wei and Guo Ping Wang
Coatings 2022, 12(10), 1599; https://doi.org/10.3390/coatings12101599 - 21 Oct 2022
Cited by 4 | Viewed by 1484
Abstract
Carbon nanocoils (CNCs) are widely used in functional devices due to their helical morphology, which can be utilized in the fabrication of functional materials with unique properties. In this study, CNCs/polyvinyl alcohol (PVA) composite films were prepared using an electrostatic spinning method and [...] Read more.
Carbon nanocoils (CNCs) are widely used in functional devices due to their helical morphology, which can be utilized in the fabrication of functional materials with unique properties. In this study, CNCs/polyvinyl alcohol (PVA) composite films were prepared using an electrostatic spinning method and used to form a diaphragm for Fabry–Perot acoustic sensors. With the addition of CNCs, the fabricated composite film showed enhanced mechanical performance responding to acoustic wave pressure. Considering the optical and mechanical response, the content of CNCs was set as 0.14 wt.%; the highest acoustic wave pressure response of the sensor was 1.89 V/Pa at 16.2 kHz, which was relatively higher than that of devices with pure polymer films. Additionally, the sensor had a broadband frequency response from 2 to 10 kHz. The results indicate that the proposed composite film acoustic sensor is suitable for low-frequency acoustic sensing, which lays the foundation for the extended application of functional sensors based on CNCs. Full article
(This article belongs to the Special Issue Enhanced Thin-Film Application on Sensors)
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