Article
Nanoscience & Nanotechnology
Yao-Yao Bai, Bin Zhang, Xu-Ping Wu, Xue-Mei Luo, Guang-Ping Zhang
Summary: To address the trade-off between high sensitivity and wide sensing range, researchers developed a flexible pressure sensor with a mass-gradient distribution of Cu onto a textile coated with Ti3C2T x nanosheets. This sensor achieved both high sensitivity and wide sensing range by continuously changing the contact area and conductivity of the contact points under compressive loading. It also demonstrated excellent cycling stability, fast response/recovery time, and breathability, enabling wide applications in monitoring human physiological signals, transmitting encrypted information, and distinguishing pressure distribution in real time.
ACS APPLIED NANO MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Yadong Li, Chao Cheng, Yulan Lu, Bo Xie, Jian Chen, Junbo Wang, Deyong Chen
Summary: This paper presents a high-sensitivity micromachined resonant differential pressure sensor based on bulk silicon, which achieves differential outputs by deploying two resonators on the pressure-sensitive diaphragm. The sensor demonstrates high differential pressure sensitivity and has potential applications in various fields.
IEEE SENSORS JOURNAL
(2021)
Article
Optics
Yundong Liu, Hailiang Chen, Hongyu Li, Song Zhang, Zhigang Gao, Yuhui Feng, Yingyue Zhang, Shuguang Li
Summary: A fiber optic SPR sensor proposed in this paper demonstrates high sensitivity and linearity for RI detection of liquid samples. With advantages of simple structure, small volume, low cost, and wide detection range, the sensor shows great potential in various applications.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Xiujuan Wang, Hui Li, Tanyu Wang, Xin Niu, Yu Wang, Siyi Xu, Yaming Jiang, Li Chen, Hao Liu
Summary: Flexible wearable pressure sensors have significant potential in various applications, but developing sensors with high sensitivity, fast response, and reliable stability through a simple fabrication process remains a challenge. In this study, a simple and efficient method was developed to fabricate lightweight three-dimensional piezoresistive sensing materials, and the assembled pressure sensor demonstrated high sensitivity, wide working range, fast response time, and reliable repeatability.
Article
Nanoscience & Nanotechnology
Zebang Luo, Jing Chen, Zhengfang Zhu, Lin Li, Yi Su, Wei Tang, Olatunji Mumini Omisore, Lei Wang, Hui Li
Summary: Flexible pressure sensors are being increasingly studied for mimicking human skin to sense external pressure. Achieving fully biomimetic skins requires sensors with high resolution and high sensitivity, and a micropillar-PVDF dielectric layer has been successfully designed to meet these requirements. The sensor matrix based on the micropillar-PVDF film and electrode array has shown high resolution and sensitivity in detecting pressure distribution and mapping objects with various geometries.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Ya-Nan Gao, Ye Wang, Tian-Ning Yue, Yun-Xuan Weng, Ming Wang
Summary: This study presents a simple method for fabricating flexible and wearable cotton fabrics with ultra-high EMI shielding, antibacterial, and superhydrophobic properties, achieved by coating silver nanoparticles and polydopamine on the surface, followed by hydrophobic polymers. The composite fabrics showed high conductivity, increased EMI shielding effectiveness, excellent self-cleaning performance, acid-alkali corrosion resistance, and significant antibacterial action against Staphylococcus aureus and Escherichia coli.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Liqiang Qiu, Zongda Zhu, Tianfu Li, Dengwang Zhou, Yongkang Dong
Summary: A high-sensitivity distributed temperature sensor based on Brillouin scattering is proposed and demonstrated experimentally, using double-coated single-mode fibers to improve the temperature sensitivity of Brillouin frequency shift. The outer coating thermal expansion coefficient, Young's modulus, and radius play important roles in improving the BFS temperature sensitivity, while the effect of Poisson's ratio can be ignored. The BFS temperature sensitivity of the double-coated fibers has been measured to be significantly higher than that of single-coated fibers, achieving a maximum measurement error of less than 0.05 degrees C.
IEEE SENSORS JOURNAL
(2021)
Article
Multidisciplinary Sciences
Shengjie Liu, Zhongqian Song, Minqi Chen, Weiyan Li, Yingming Ma, Zhenbang Liu, Yu Bao, Azhar Mahmood, Li Niu
Summary: Sensitivity and linearity are crucial indices to evaluate pressure sensors, but are often mutually exclusive, limiting their applications. This study proposes an effective strategy to resolve this contradiction through modulus difference-induced embedding deformation. Experimental results confirm the embedding deformation behavior related to the elastic modulus difference between soft electrode and rigid microstructures. The fabricated iontronic pressure sensor exhibits high sensitivity (35 kPa(-1)) and a wide linear response range (0-250 kPa), showing potential applications in monitoring high-fidelity pulse waveforms and human motion.
Article
Optics
Jianqiao Liang, Yang Yu, Qiang Bian, Wenjie Xu, Zhencheng Wang, Shumao Zhang, Junjie Weng, Jiajian Zhu, Yong Chen, Xiaoyang Hu, Junbo Yang, Zhenrong Zhang
Summary: Metal coatings can protect optical fiber sensors and extend their lifespan in harsh environments. A nickel-coated fiber Bragg grating combined with an air bubble cavity Fabry-Perot interferometer fiber optic sensor was developed for simultaneous high-temperature and strain sensing. The sensor demonstrated successful testing at 545 degrees C for 0-1000 microstrain, and the characteristic matrix was used to separate temperature and strain. With its ability to attach to high-temperature metal surfaces, the metal-coated optical fiber sensor has potential applications in real-world structural health monitoring.
Article
Engineering, Environmental
Songfang Zhao, Xiangying Meng, Lin Liu, Wenjie Bo, Meili Xia, Ruliang Zhang, Duxia Cao, Jong-Hyun Ahn
Summary: In this study, a versatile conductive composite with excellent electromechanical performance was fabricated using a simple, energy-saving, and scalable method. The composite demonstrated wide sensing range and high sensitivity, allowing for monitoring full-range human motions efficiently.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Ting Li, Haiping Shang, Bing Wang, Chaomin Mao, Weibing Wang
Summary: In this study, an absolute piezoresistive pressure sensor is designed and fabricated for full ocean depth measurement. The sensor exhibits high sensitivity and high accuracy, achieved through theoretical calculations, simulations, and optimization of the diaphragm shape and dimension as well as the piezoresistor parameters.
IEEE SENSORS JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Yue Zhang, Xiangjie Xie, Shiqi Chen, Faxin Zhong, Yunqi Zhu, Xiangyu Yin
Summary: A high-sensitivity pressure sensor based on the P(VDF-HFP)/[Emim][BF4] ionogel film was developed, which exhibited good mechanical flexibility, ionic conductivity, and sensitivity. The sensor showed fast response, long-term stability, and the ability to recycle its critical components.
IEEE SENSORS JOURNAL
(2022)
Article
Physics, Applied
Zirui Cai, Yiming Li, Peng Fan, Qiao Hu, Zicai Zhu
Summary: This research proposes an ionic polymer-based pressure sensor with a gradient porous sensing structure, which is easy to construct and has high sensitivity in the charge-sensing mode.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Da Geng, Songyue Chen, Rui Chen, Yuru You, Chiqian Xiao, Chen Bai, Tao Luo, Wei Zhou
Summary: An ordered multilevel microstructure is proposed in this study for performance regulation of piezoresistive pressure sensors. The fabricated flexible sensors exhibit high sensitivity, low detection limit, short response time, and excellent mechanical stability over a wide range. This design and fabrication strategy can be further optimized and applied to a variety of flexible materials.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Engineering, Mechanical
Dakshitha Weerasinghe, M. R. Bambach, Damith Mohotti, Hongxu Wang, Paul J. Hazell
Summary: This study investigated the impact response of aramid Twaron CT709 fabrics coated with a rubber spray-on material, and found that the rubber coating can increase the ballistic limit velocity and energy absorption, but at certain impact velocities, the energy absorption is lower.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
