Article
Instruments & Instrumentation
Ning Xiao, Yao Wang, Lei Chen, Yumei Wen, Guoqiang Wang, Ping Li, Rui Xiao, Xiaojun Ji, Tao Han
Summary: The study introduces a nonlinear equivalent circuit model to design a new ME composite with improved sensitivity to dc and low-frequency magnetic fields, as well as a wider bandwidth, under dual ac magnetic field and stress modulation. The theoretical predictions are supported by experimental results, showing the potential for a new ME magnetometer with low power consumption and high sensitivity.
SMART MATERIALS AND STRUCTURES
(2021)
Article
Chemistry, Analytical
Kunyu Sun, Zhihao Jiang, Chengmeng Wang, Dongxuan Han, Zhao Yao, Weihua Zong, Zhejun Jin, Shandong Li
Summary: The magnetoelectric (ME) sensor is a new type of magnetic sensor that has ultrahigh sensitivity for measuring low-frequency weak magnetic fields. In this study, a metglas/PZT-5B ME sensor with a mechanical resonance frequency f(res) of 60.041 kHz was prepared. With the use of a frequency up-conversion technique, the sensor achieved a limit of detection (LOD) under an AC magnetic field lower than 1 nT at 8 Hz, and a minimum LOD of 0.51 nT at 20 Hz. The high-resolution ME sensor at the sub-nT level shows great potential in the field of low-frequency weak magnetic field measurement technology.
Article
Engineering, Electrical & Electronic
Hai Zhou, Changbao Xu, Caijiang Lu, Xueling Jiang, Ziyan Zhang, Jingqi Wang, Xiaobing Xiao, Mingyong Xin, Lei Wang
Summary: This study investigates the transient magnetoelectric response of the symmetric TerfenolD/PZT/Terfenol-D laminate structure under different transient current driving, revealing damping oscillation phenomena. The results suggest that the ME composite is an ideal lightning current sensing device.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Chemistry, Physical
Lei Chen, Yao Wang, Tianhong Luo, Yongkang Zou, Zhongjie Wan
Summary: The rectangular magnetoelectric (ME) composites of Metglas/PZT and Terfenol-D/PZT were prepared and the effects of magnetostrictive layer materials on the magnetoimpedance of the ME composite were discussed. Theoretical analyses showed that impedance is dependent on material characteristics such as Young's modulus, magnetic permeability, and magnetostrictive strain. Experimental results demonstrated that the Metglas/PZT composite exhibited significantly higher magnetoimpedance ratios compared to the Terfenol-D/PZT composite. These findings provide fundamental guidance for the design and fabrication of novel multifunction devices based on the magnetoimpedance effect of ME composites.
Article
Nanoscience & Nanotechnology
Thomas Mion, Margo Staruch, Konrad Bussmann, Goran Karapetrov, Olaf van 't Erve, Sara Mills, Heonjune Ryou, Ramasis Goswami, Patrick G. Callahan, David J. Rowenhorst, Syed B. Qadri, Samuel E. Lofland, Peter Finkel
Summary: This study investigates the influence of hafnium alloying on the magnetic and magnetostrictive properties of iron-cobalt alloy thin films. The results show that hafnium alloying can reduce the coercivity of the thin films while maintaining high magnetostriction and low film stress. The transition from tensile to compressive stress, along with high magnetostriction and low coercive field, occurs at an appropriate hafnium alloying level.
Article
Engineering, Electrical & Electronic
Yang Du, Dunke Lu, Qingping He, Xiaohui Fang
Summary: We propose a method to improve sensitivity by spatial-frequency doubling of the sensing signal in a single fiber interferometer. This method achieves the same effect as physically increasing the optical path difference (OPD) in an interferometer, but without increasing the size and introducing crosstalk and cost. Through the doubling of spatial frequencies, a Vernier effect with ultrahigh sensitivity is achieved in temperature sensing using a Sagnac interferometer.
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Physical
Yuan Wei, Lijing Xiang, Penghui Zhu, Yangyang Qian, Boxin Zhao, Gang Chen
Summary: The organohydrogel-based ionic skin is fabricated through a unique design strategy, showing excellent stretchability, high Young's modulus, and superior ionic conductivity. This skin possesses durable adhesion and UV-blocking capabilities, as well as environmental stability. With superior mechanical response and thermal perception capacities, it can be used for real-time motion monitoring and dynamic temperature detection.
CHEMISTRY OF MATERIALS
(2021)
Article
Materials Science, Ceramics
Xing Zhang, Haihong Zheng, Jiaxuan Hu, Fumin Lu, Xiusha Peng, Rongfei Wei, Fangfang Hu, Hai Guo
Summary: By designing energy transfer and modifying the local lattice environment, the efficiency of up-conversion luminescence of Tm3+ has been significantly enhanced. Additionally, the B2.2S0.8LO:Tm3+/Yb3+ sample shows superior temperature sensing properties with high sensitivity, wide sensing range, and stability.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Benjie Ding, Tingfeng Ma, Licheng Hua, Jianying Hu, Minghua Zhang, Jianke Du
Summary: A shear-mode trilayer magnetoelectric (ME) laminate heterostructure comprising giant magnetostrictive materials (GMMs) and a piezoelectric plate was prepared in this study. Experimental research demonstrated that the Z-type structure exhibited higher magnetoelectric coupling coefficient, frequency response range, and vibration displacement, indicating its applicability for transducing, sensing, and energy harvesting.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Review
Chemistry, Physical
Anuj Kumar, Davinder Kaur
Summary: Magnetoelectric heterostructures have attracted attention in the material science field due to their magneto-electric coupling. Recent research has focused on improving the sensing performance of magnetoelectric-based magnetic sensors and exploring new sensing mechanisms such as signal modulation and increment E-based sensors. These sensors show potential for future applications in biomedical, geomagnetic, and magnetic anomaly detections.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Mudalagiriyappa Satish, Hadonahalli Munegowda Shashanka, Sujoy Saha, Keerthi Haritha, Debabrata Das, Pendaranahalli Nadikeraiah Anantharamaiah, C. Ramana
Summary: This study investigates the effect of substituting Ni2+ with Co2+ on the crystal structure, phase, microstructure, magnetic properties, and magnetostrictive properties of NiFe2O4 (NFO). The Co-substituted NFO (Ni1-xCoxFe2O4, NCFO, 0<x<1) nanomaterials were synthesized and analyzed using various techniques. The results show that Co-substitution significantly influences the lattice constant, chemical bonding, and magnetic properties of NCFO, with potential applications in torque sensors.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Optics
Xiangyan Yun, Jun Zhou, Yaohui Zhu, Xiong Li, Yetong Jia, Denghui Xu
Summary: A series of Er3+ doped LiYbW2O8 phosphors were successfully synthesized using high-temperature solid-state process. The research showed that these phosphors exhibit high sensitivity in optical temperature sensing properties, making them potential excellent materials for temperature sensors.
Article
Chemistry, Physical
Anxin Luo, Weihan Xu, Jiangyong Sun, Kunling Xi, Siyao Tang, Xinge Guo, Chengkuo Lee, Fei Wang
Summary: This paper proposes a vibration energy harvester with a double frequency-up conversion mechanism, which is capable of harvesting energy from ultra-low-frequency vibrations. The device can convert external vibrations from sub-Hertz to tens of Hertz and further to hundreds of Hertz, achieving a high conversion ratio of 8400. The comprehensive dynamic model proposed in this paper has been verified through theoretical analysis and COMSOL simulation, effectively analyzing the frequency conversion process and output voltage. When excited by a frequency of 0.2 Hz, the device can generate an average output power of 75 mu W with a compact size. Its non-contact design allows for application in sealed scenarios for smart city construction.
Article
Chemistry, Physical
P. N. Anantharamaiah, H. M. Shashanka, S. Saha, J. A. Chelvane, B. Sahoo
Summary: Bismuth-substituted cobalt ferrite samples with enhanced magnetostriction were successfully synthesized using a glycine-nitrate based auto-combustion route. The presence of Bi3+ promoted significant grain growth and increased strain sensitivity at lower magnetic fields.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Zhenhua Li, Qi Han, Tianpeng Yan, Zhanjun Huang, Yinglin Song, Yuxiao Wang, Xueru Zhang
Summary: In this work, Er3+, Yb(3+)co-doped Gd2O3 phosphors were synthesized through a simple hydrothermal method, and the optimal doping concentration was investigated. The study revealed the influence of calcination temperature on the formation of self-assembled structures and the regulation of fluorescence intensity by adjusting the ratio of NH4F and lanthanoid nitrate. Additionally, the fluorescence intensity ratio based on thermally coupled energy levels and the sensitivity of optical temperature sensing were explored.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
