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Smart Sensors Based on Optoelectronic and Piezoelectric Materials
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Smart Sensors Based on Optoelectronic and Piezoelectric Materials

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Physical Sensors".

Deadline for manuscript submissions: 20 December 2025 | Viewed by 1198

Special Issue Editors

Dr. Hao Xu

E-Mail Website
Guest Editor
School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, China
Interests: two-dimensional optoelectronic materials; graphene; nanoelectronics; optoelectronics; NIR photodetctors; chemical sensors
Special Issues, Collections and Topics in MDPI journals
Dr. Ruimin Chen

E-Mail Website
Guest Editor
Research Center for Humanoid Sensing and Perception, Zhejiang Laboratory, Hangzhou 311121, China
Interests: high-frequency ultrasonic transducer and array; flexible ultrasonic transducer and array; piezoelectric materials; applications of ultrasound in medicine and industry
Dr. Xiao Li

E-Mail
Guest Editor
National Graphene Institute, University of Manchester, Manchester M13 9PL, UK
Interests: two-dimensional optoelectronic materials; photodetctors; chemical sensors; superconducting quantum interference devices; graphene
Special Issues, Collections and Topics in MDPI journals
Dr. Qinhao Lin

E-Mail Website
Guest Editor
Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313001, China
Interests: surface acoustic wave sensors; photoacoustic spectroscopy; acoustic metamaterials and metasurfaces; acoustic sensing

Special Issue Information

Dear Colleagues,

The field of smart sensors based on optoelectronic and piezoelectric materials has witnessed remarkable advancements in recent years, driven by the increasing demand for high-performance, energy-efficient, and compact sensing solutions in various applications such as structural health monitoring, the Internet of Things, wearable electronics, and environmental monitoring, among others. This Special Issue aims to collect innovative contributions in the form of original research and review articles on recent advances in the design, fabrication, processing, modification, functionalization, and engineering of smart sensors that exploit the utilization of novel optoelectronic and piezoelectric materials, as well as their applications in various fields.

Potential topics include, but are not limited to, the following:

  • Novel optoelectronic and piezoelectric materials and their properties;
  • Theoretical and computational modeling of smart sensor materials and devices;
  • Design, fabrication, and integration of optoelectronic and piezoelectric sensors for smart sensing;
  • Characterization techniques for optoelectronic and piezoelectric materials and devices;
  • Advanced algorithms for signal processing in optoelectronic and piezoelectric sensors;
  • Applications of optoelectronic and piezoelectric sensors in wearable electronics, environmental monitoring, structural health, the Internet of Things, and beyond.

Dr. Hao Xu
Dr. Ruimin Chen
Dr. Xiao Li
Dr. Qinhao Lin
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. Sensors 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 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.

Keywords

  • optoelectronic materials
  • piezoelectric materials
  • graphene and 2D materials
  • photodetectors and light sources
  • acoustic sensors
  • chemical and biosensors

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (2 papers)

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Research

26 pages, 4583 KiB  
Article
Mathematical Modeling and Finite Element Simulation of the M8514-P2 Composite Piezoelectric Transducer for Energy Harvesting
by Demeke Girma Wakshume and Marek Łukasz Płaczek
Sensors 2025, 25(10), 3071; https://doi.org/10.3390/s25103071 - 13 May 2025
Viewed by 593
Abstract
This paper focuses on the mathematical and numerical modeling of a non-classical macro fiber composite (MFC) piezoelectric transducer, MFC-P2, integrated with an aluminum cantilever beam for energy harvesting applications. It seeks to harness the transverse vibration energy in the environment to power small [...] Read more.
This paper focuses on the mathematical and numerical modeling of a non-classical macro fiber composite (MFC) piezoelectric transducer, MFC-P2, integrated with an aluminum cantilever beam for energy harvesting applications. It seeks to harness the transverse vibration energy in the environment to power small electronic devices, such as wireless sensors, where conventional power sources are inconvenient. The P2-type macro fiber composites (MFC-P2) are specifically designed for transverse energy harvesting applications. They offer high electric source capacitance and improved electric charge generation due to the strain developed perpendicularly to the voltage produced. The system is modeled analytically using Euler–Bernoulli beam theory and piezoelectric constitutive equations, capturing the electromechanical coupling in the d31 mode. Numerical simulations are conducted using COMSOL Multiphysics 6.29 to reduce the complexity of the mathematical model and analyze the effects of material properties, geometric configurations, and excitation conditions. The theoretical model is based on the transverse vibrations of a cantilevered beam using Euler–Bernoulli theory. The natural frequencies and mode shapes for the first four are determined. Depending on these, the resonance frequency, voltage, and power outputs are evaluated across a 12 kΩ resistive load. The results demonstrate that the energy harvester effectively operates near its fundamental resonant frequency of 10.78 Hz, achieving the highest output voltage of approximately 0.1952 V and a maximum power output of 0.0031 mW. The generated power is sufficient to drive ultra-low-power devices, validating the viability of MFC-based cantilever structures for autonomous energy harvesting systems. The application of piezoelectric phenomena and obtaining electrical energy from mechanical vibrations can be powerful solutions in such systems. The application of piezoelectric phenomena to convert mechanical vibrations into electrical energy presents a promising solution for self-powered mechatronic systems, enabling energy autonomy in embedded sensors, as well as being used for structural health monitoring applications. Full article
(This article belongs to the Special Issue Smart Sensors Based on Optoelectronic and Piezoelectric Materials)
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11 pages, 2434 KiB  
Article
2D/3D Perovskite Surface Passivation-Enabled High-Detectivity Near-Infrared Photodiodes
by Xuefeng Huangfu, Junyu Chen, Gaohui Ge, Jianyu Li, Jiazhen Zhang, Qinhao Lin, Hao Xu and Shu Min Wang
Sensors 2025, 25(9), 2740; https://doi.org/10.3390/s25092740 - 26 Apr 2025
Viewed by 293
Abstract
Due to high responsivity and wide spectral sensitivity, metal halide perovskite photodiodes have a wide range of applications in the fields of visible light and near-infrared photodetection. Specific detectivity is an important quality factor for high-performance perovskite-based photodiodes, while one of the keys [...] Read more.
Due to high responsivity and wide spectral sensitivity, metal halide perovskite photodiodes have a wide range of applications in the fields of visible light and near-infrared photodetection. Specific detectivity is an important quality factor for high-performance perovskite-based photodiodes, while one of the keys to achieving high detectivity is to reduce dark current. Here, 3-fluoro phenethylammonium iodide (3F-PEAI) was used to passivate the perovskite surface and form the two-dimensional (2D) perovskite on the three-dimensional (3D) perovskite surface. The as-fabricated passivated perovskite photodiodes with 2D/3D hybrid-dimensional perovskite heterojunctions showed two orders of magnitude smaller dark current, larger open circuit voltage and faster photoresponse, when compared to the control perovskite photodiodes. Meanwhile, it maintained almost identical photocurrent, achieving a high specific detectivity up to 2.4 × 1012 Jones and over the visible-near-infrared broadband photodetection. Notably, the champion photoresponsivity value of 0.45 A W−1 was achieved at 760 nm. It was verified that the 2D capping layers were able to suppress trap states and accelerate photocarrier collection. This work demonstrates strategic passivation of surface iodine vacancies, offering a promising pathway for developing ultrasensitive and low-power consumption photodetectors based on metal halide perovskites. Full article
(This article belongs to the Special Issue Smart Sensors Based on Optoelectronic and Piezoelectric Materials)
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