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Recent Advances in Optoelectronic Materials and Device Engineering

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

Deadline for manuscript submissions: 20 December 2025 | Viewed by 264

Special Issue Editor


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Guest Editor
School of Electrical Engineering & Computer Science, University of Arkansas, Fayetteville, AR, USA
Interests: III-nitrides; 2D materials; optoelectronic; photodetector; neuromorphic devices

Special Issue Information

Dear Colleagues,

This Special Issue showcases advancements in electronic materials transforming neuromorphic computing, next-generation memory, and advanced sensors. It emphasizes emerging materials’ growth, characterization, and fabrication, focusing on memristor devices, photodetectors, logic gates, photonics devices, imaging technologies, and gas sensors. Key materials include 2D, van der Waals materials, epitaxial systems, and wide band gap materials with a spotlight on innovative growth techniques. Theoretical studies and computational modeling will delve into material growth and device performance. Sustainability and scalability in fabrication processes are also explored, aiming to bridge the gap between laboratory research and industrial-scale applications. This issue is a platform for material science, physics, nanotechnology, and electrical engineering researchers to share findings and foster collaboration, driving progress in computing, memory, and photonics technologies. This special issue aligns perfectly with the Sensors journal’s focus on cutting-edge research in sensing technologies. Addressing advancements in materials and devices that underpin modern sensors offers valuable insights for academic and industrial audiences, driving innovation in the field.

Dr. Pargam Vashishtha
Guest Editor

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Keywords

  • optoelectronic
  • 2D materials
  • III-nitrides
  • wide band gap materials
  • Van der Waals materials
  • photodetector
  • sensor
  • photonics devices

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Published Papers (2 papers)

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Research

14 pages, 2978 KiB  
Article
A Miniaturized FBG Tactile Sensor for the Tip of a Flexible Ureteroscope
by Shiyuan Dong, Sen Ma, Tenglong Zhou, Yuyang Lou, Xuanwei Xiong, Keyu Wei, Dong Luo, Jianwei Wu, Huanhuan Liu, Ran Tao, Tianyu Yang and Yuming Dong
Sensors 2025, 25(9), 2807; https://doi.org/10.3390/s25092807 - 29 Apr 2025
Abstract
This work introduces a novel fiber Bragg grating (FBG)-based tactile sensor specifically developed for real-time force monitoring at the tips of flexible ureteroscopes. With a diameter of only 1.5 mm, the sensor features a dual-FBG configuration that effectively separates temperature effects from force [...] Read more.
This work introduces a novel fiber Bragg grating (FBG)-based tactile sensor specifically developed for real-time force monitoring at the tips of flexible ureteroscopes. With a diameter of only 1.5 mm, the sensor features a dual-FBG configuration that effectively separates temperature effects from force signals, integrated with an innovative elastomer structure based on staggered parallelogram elements. Finite element analyses comparing traditional spiral and parallel groove designs indicate that the new configuration not only enhances axial sensitivity through optimized deformation characteristics but also significantly improves resistance to transverse forces via superior stress distribution and structural stability. In the sensor, a suspended lateral FBG is employed for thermal compensation, while an axially constrained FBG is dedicated to force detection. Calibration using a segmented approach yielded dual-range sensitivities of approximately 283.85 pm/N for the 0–0.5 N range and 258.57 pm/N for the 0.5–1 N range, with a maximum error of 0.07 N. Ex vivo ureteroscopy simulations further demonstrated the sensor’s capability to detect tissue–instrument interactions and to discriminate contact events effectively. This miniaturized solution offers a promising approach to achieving precise force feedback in endoscopic procedures while conforming to the dimensional constraints of standard ureteroscopes. Full article
(This article belongs to the Special Issue Recent Advances in Optoelectronic Materials and Device Engineering)
18 pages, 9107 KiB  
Article
Study of an FBG-FP Cascaded Optical Fiber Current Transformer Based on Electrostrictive Material Coupling
by Cong Chen, Zhongyuan Li, Qichao Chen and Weichao Zhang
Sensors 2025, 25(8), 2492; https://doi.org/10.3390/s25082492 - 15 Apr 2025
Viewed by 177
Abstract
Aiming at the issues of low sensitivity and poor resistance to temperature and vibration interference in traditional optical fiber current transformers, as well as the structural complexity of magnetostrictive material-coupled sensors, this paper integrates a high-sensitivity electrostrictive piezoelectric ceramic sensor with an FBG-FP [...] Read more.
Aiming at the issues of low sensitivity and poor resistance to temperature and vibration interference in traditional optical fiber current transformers, as well as the structural complexity of magnetostrictive material-coupled sensors, this paper integrates a high-sensitivity electrostrictive piezoelectric ceramic sensor with an FBG-FP cascaded fiber-optic sensor. This coupling significantly optimizes the sensor structure. By employing orthogonal intensity demodulation to enhance detection sensitivity, and adopting a multi-cycle waveform-averaging method to calculate the DC output light intensity, temperature calibration and compensation are achieved through the correlation between the DC output light intensity and operating points. Experimental results demonstrate that the designed sensor exhibits a detection bandwidth of 0–7 kHz, fully meeting the requirements for power-frequency current detection. Its current measurement range spans 0.15–42 mA, with a minimum measurable current as low as 150 μA. This study provides a compact, high-precision, highly scalable, and adaptable current detection solution for power systems, demonstrating significant engineering application value. Full article
(This article belongs to the Special Issue Recent Advances in Optoelectronic Materials and Device Engineering)
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