Article
Engineering, Electrical & Electronic
Jitao Zhang, Baojie Zhang, Qingfang Zhang, D. A. Filippov, Jie Wu, Jiagui Tao, Jing Chen, Fang Wang, Liying Jiang, Lingzhi Cao
Summary: A scalable, passive galvanic isolator composed of a ferrite/piezoelectric magnetoelectric (ME) composite with a coil wound around it was developed. The isolator exhibits inductive/capacitive behaviors at its two ports, and an induced impedance difference enables high isolation for signal transferring/blocking. The non-reciprocity of the device was characterized and verified through mutual transfer impedance measurement. Additionally, the self-impedance transfer ratio of |Z(22)|/|Z(11)| was introduced as a key parameter to quantify the isolating performance, reaching up to 1220 at the optimum bias of H = 190 Oe. The proposed ferrite/piezoelectric ME isolator with significant desired properties is important for signal propagation/blocking due to its impedance difference and non-reciprocity.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Review
Materials Science, Multidisciplinary
Qi Mao, Jingen Wu, Zhongqiang Hu, Yiwei Xu, Yongjun Du, Yuanbo Hao, Mengmeng Guan, Chenying Wang, Zhiguang Wang, Ziyao Zhou, Shuxiang Dong, Wei Ren, Ming Liu, Zhuangde Jiang
Summary: Magnetoelectric bulk composites exhibit strong ME coupling performance, allowing for electric field control of magnetization or magnetic field control of ferroelectric polarization. This novel functionality presents opportunities for developing ultra-fast, low-power, and miniaturized electronics.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Materials Science, Multidisciplinary
Byung-Il Noh, Su Chul Yang
Summary: Polymer-based magnetoelectric laminate composites have been developed for flexible energy harvesters and wearable sensors. Adhesive-free laminate composites consisting of porous magnetostrictive nickel foam and soft PVDF films exhibited good physical coupling. The self-bias ME effect was observed in NF, leading to reliable ME responses in the composites.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Acoustics
Gianluca Gatti, Cesare Svelto
Summary: This paper presents a theoretical insight on the performance of a vibration isolator with a specific form of geometric nonlinearity. The analytical findings are validated by numerical simulations, providing useful guidelines for the design of such isolators.
JOURNAL OF VIBRATION AND CONTROL
(2022)
Article
Chemistry, Physical
Venkateswarlu Annapureddy, Sung Hoon Park, Hyunseok Song, Jungho Ryu
Summary: A strong self-biased magnetoelectric composite was proposed in this study, which can generate the maximum magnetoelectric response in a zero-bias field. This eliminates the need for bulky DC bias application and results in a simple ME device with a small volume.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Mechanics
Juanjuan Zhang, Xiaoqiang Wang, Xuhao Chen, Han Du, George J. Weng
Summary: This study investigates the performance and applications of multi-component hybrid magnetoelectric composites using the finite element method. A finite element model is established to study the distribution of elastic field, magnetic field, and electric field. The influence of various factors on the magnetoelectric coefficient is analyzed. The research results are of great significance for the design and technological development of high-performance magnetoelectric devices.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Civil
Lyan-Ywan Lu, Han-Wei Huang, Yang Wu, Shao-Jou Wang
Summary: The DSIVC isolator is a novel passive seismic isolation system that adapts its isolation stiffness automatically based on isolator displacement during earthquakes, effectively preventing excessive isolation displacement. With two sliding interfaces, the DSIVC isolator not only reduces manufacturing costs and installation space, but also increases isolator displacement capacity.
ENGINEERING STRUCTURES
(2021)
Article
Polymer Science
Manseong Song, Su-Chul Yang
Summary: This study focuses on the design of binderless polymer-based magnetoelectric (ME) laminates using cellulose/Ni (CN) laminates. The research confirms the surface properties of Ni foil and the electrostatic interactions necessary for binderless states through heat treatment. The CN laminates exhibit excellent ferromagnetic and ferroelectric properties, making them ideal candidates for high-response ME applications.
Article
Materials Science, Composites
Victor A. L'vov, Pedro Martins, N. Pereira, Ander Garcia Diez, Hideki Hosoda, Volodymyr Chernenko, Senentxu Lanceros-Mendez
Summary: Polymer-based magnetoelectric composites, composed of magnetostrictive and piezoelectric phases, exhibit effective coupling between the magnetic and electric orders and have important advantages for various applications. However, their successful implementation strongly depends on increasing their ME voltage response.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Mechanics
Chien-hong Lin, Ying-Zhao Lin
Summary: Two micromechanical formulations were established for analyzing nonlinear magnetoelectric coupling in composite materials with different connectivities. The study showed that the magnetoelectric coupling in the composites can be modulated by the connectivity and constituent proportion, and the field-dependent magnetoelectric responses lead to significant differences between linear and nonlinear predictions.
COMPOSITE STRUCTURES
(2021)
Article
Materials Science, Composites
Lei Zhang, Fangsen Cui, Bisma Mutiargo, Lin Ke, Zi Wen Tham, Yi Fan Chen, Chin Yaw Tan
Summary: This paper reports the use of acoustic shearography imaging for defect detection in carbon fiber composite materials. The experiment shows that acoustic shearography can efficiently image various defects and synchronize with the ultrasonic wave frequency to significantly improve the imaging quality. Comparison with X-ray computed tomography results indicates that acoustic shearography can provide sufficiently good defect imaging results with reduced imaging time.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Roberto Koeferstein, Florian Oehler, Stefan G. Ebbinghaus
Summary: Magnetoelectric composites were synthesized using PEG400 and characterized for their microstructure and magnetic properties. The composites exhibited ferrimagnetic behavior with variable saturation magnetization and coercivities. Impedance spectroscopy revealed a decrease in relative permittivities with increasing frequency and CoFe2O4 fraction. The magnetoelectric coefficient showed a dependence on both the CoFe2O4 fraction and sintering temperature, with a maximum value observed at x = 0.3. The frequency dependence of the coefficient was also investigated.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Mechanics
Yang Shi, Baoxin Lei, Yongkun Wang, Junjie Ye
Summary: This paper presents an analytical model to evaluate the self-bias magnetoelectric effect of magnetization-graded magnetoelectric composites under extensional-bending coupled vibration. The results indicate the availability of self-bias magnetic field in the composites, which can enhance the self-bias magnetoelectric coupling and adjust the resonance frequency by applying tensile stress or increasing the thickness of the high-permeability layer.
COMPOSITE STRUCTURES
(2022)
Article
Mechanics
Zhi-Ming Hu, Yu Su, Jackie Li
Summary: In this paper, a two-level micromechanics model is established to study the nonlinear magnetoelectric effects of multiferroic composites; By treating the ferromagnetic and ferroelectric materials in two phases, the overall effective properties of the composite are calculated and analyzed; The feasibility of the theoretical model is verified by comparing the results with existing experimental data.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2021)
Article
Chemistry, Physical
A. Lasheras, P. G. Saiz, J. M. Porro, I. Quintana, C. Polak, A. C. Lopes
Summary: This study introduces novel geometrically modified magnetoelectric laminates based on metallic glass and piezoelectric polymer, showing improved induced ME responses at high frequencies compared to common rectangular shapes, opening doors for enhanced high frequency devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Nirjhar Bhattacharjee, Krishnamurthy Mahalingam, Adrian Fedorko, Valeria Lauter, Matthew Matzelle, Bahadur Singh, Alexander Grutter, Alexandria Will-Cole, Michael Page, Michael McConney, Robert Markiewicz, Arun Bansil, Don Heiman, Nian Xiang Sun
Summary: Breaking time-reversal symmetry by introducing magnetic order creates a novel topological antiferromagnetic phase. The results of this study provide a pathway towards industrial heterostructures for topological quantum devices.
ADVANCED MATERIALS
(2022)
Article
Multidisciplinary Sciences
Cheng Tu, Ming -hong Yang, Zi-qiang Zhang, Xiu-mei Lv, Lei Li, Xiao-Sheng Zhang
Summary: This paper presents a highly sensitive temperature sensor using AlN-on-Si resonators with coupled-beam structures. The out-of-plane flexural mode is utilized to achieve a large temperature coefficient of resonant frequency. The measured sensitivities in the temperature range of 25°C to 60°C show great potential for on-chip temperature compensation scheme for cofabricated sensors.
Article
Engineering, Biomedical
Adam Khalifa, Seyed Mahdi Abrishami, Mohsen Zaeimbashi, Alexander D. Tang, Brian Coughlin, Jennifer Rodger, Sydney S. Cash, Nian X. Sun
Summary: This study proposes a new concept of noninvasive focal stimulation of deep brain regions using temporal interference of two high-frequency magnetic fields. The experimental results show that regions affected by only one high-frequency magnetic field have low C-Fos expression, while regions affected by two fields interfering to create a low-frequency envelope display a significant increase in C-Fos expression.
JOURNAL OF NEURAL ENGINEERING
(2023)
Article
Physics, Applied
Ruoda Zheng, Victor Estrada, Nishanth Virushabadoss, Alexandria Will-Cole, Adrian Acosta, Jinzhao Hu, Wenzhong Yan, Jane P. Chang, Nian X. Sun, Rashaunda Henderson, Gregory P. Carman, Abdon E. Sepulveda
Summary: This paper presents a 400 MHz magnetoelectric (ME) Lamb wave antenna design for use in the medical implant communication service band. The antenna uses a heterostructure of piezoelectric and magnetostrictive membranes to generate acoustic waves and function as a magnetic dipole. Finite element analysis simulations are used to investigate the piezoelectric, micromagnetic, and magnetic dipole radiation aspects of the antenna. An experimental demonstration shows mechanical resonance and ME coupling, indicating that the design can be used as a tunable oscillator or sensor in A(0) mode. This ME approach provides a solution to the miniaturization problem of traditional current-based implantable antennas.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Analytical
Adam Khalifa, Mehdi Nasrollahpour, Ali Nezaratizadeh, Xiao Sha, Milutin Stanacevic, Nian X. Sun, Sydney S. Cash
Summary: Wireless implantable medical devices have advanced significantly in the past three decades, allowing interaction with the nervous system. To enhance stability, safety, and distribution of these interfaces, a new class of sub-mm scale wireless microelectronic devices is being developed. This research presents a simple technique for fabricating and assembling a wirelessly powered stimulating implant, demonstrating high efficiency in in vivo experiments on an anesthetized rat.
Article
Materials Science, Multidisciplinary
A. R. Will-Cole, James L. Hart, Matthew Matzelle, Adrian Podpirka, Nirjhar Bhattacharjee, Shreya K. Patel, Sarah H. Tolbert, Arun Bansil, Judy J. Cha, Don Heiman, Nian X. Sun
Summary: Bilayer topological insulator/ferromagnet heterostructures show low switching energy and high power efficiency for spintronic applications. This study reveals the reaction between topological insulators and ferromagnetic films, leading to spin-pumping and exchange bias phenomena, and emphasizes the need for further investigation on the complex interfaces.
PHYSICAL REVIEW MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
A. R. Will-Cole, James L. Hart, Valeria Lauter, Alexander Grutter, Carsten Dubs, Morris Lindner, Timmy Reimann, Nichole R. Valdez, Charles J. Pearce, Todd C. Monson, Judy J. Cha, Don Heiman, Nian X. Sun
Summary: Yttrium iron garnet (YIG) grown by liquid phase epitaxy exhibits unique low-temperature magnetization dynamics, with negligible increase in ferromagnetic resonance linewidth down to 10 K. This is attributed to the absence of rare-earth impurities and the suppression of Gd diffusion from the substrate. Compared to YIG films grown by other deposition methods, liquid phase epitaxy YIG films have a sharper YIG/GGG interface and significantly lower ferromagnetic resonance linewidths below 50 K. These films are ideal for low-temperature experiments/applications that require low magnetic losses.
PHYSICAL REVIEW MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Gurmeet Singh Lotey, Ankush Kumar Tangra, Mohammed Benali Kanoun, Souraya Goumri-Said, Sanjeev Kumar, Mohinder Pal Garg, Alexandr Tovstolytkin, Nian X. Sun
Summary: Perovskite solar cells using inorganic calcium ferrite as a hole electron layer exhibit superior stability and efficiency compared to organic hole electron layers. Time-resolved photoluminescence spectroscopy shows improved charge extraction and reduced recombination at the interfaces. Theoretical analysis validates the experimental results and uncovers the mechanism behind the observed high-power conversion efficiency.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Acoustics
Cheng Tu, Linqian Qiao, Lei Li, Yu Chen, Xiaosheng Zhang
Summary: This study investigates the strain distributions of fundamental and 1st-order Lamb wave modes in AlN-on-Si resonators and analyzes the effects of vibration mode distortion on resonant frequency and piezoelectric transduction.
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
(2023)
Article
Engineering, Electrical & Electronic
Marco Liserre, Yoann Pascal, Jeffrey McCord, Thiago Pereira, Rainer Adelung, Lukas Zimoch, S. Kaps, Xiaxin Li, Nian X. Sun
Summary: Voltage controlled magnetic components are a promising technology that provides circuit designers with additional optimization freedom. This article reviews technologies for creating controlled magnetics and proposes potential applications, with a focus on a use case involving voltage-controlled inductors in a multiport dc-dc converter.
IEEE POWER ELECTRONICS MAGAZINE
(2023)
Article
Engineering, Electrical & Electronic
Hwaider Lin, Xiaoling Shi, Carsten Dubs, Mohan Sanghadasa, Nian Sun
Summary: In order to ensure the reliable operation of GPS receivers in complex electromagnetic environments, measures need to be taken against interfering signals. A new compact and passive thin-film frequency selective limiter (TF-FSL) for GPS applications has been demonstrated, showing low insertion loss, low-power rejection threshold, and high interference signal suppression. The TF-FSL utilizes a new transducer structure and the magnetostatic surface wave of a low-damping yttrium iron garnet (YIG) thin film.
IEEE MICROWAVE AND WIRELESS TECHNOLOGY LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Diptashree Das, Ziyue Xu, Mehdi Nasrollahpour, Isabel Martos-Repath, Mohsen Zaeimbashi, Adam Khalifa, Ankit Mittal, Sydney S. Cash, Nian X. Sun, Aatmesh Shrivastava, Marvin Onabajo
Summary: A magnetoelectric antenna can perform wireless energy harvesting and sensing at different frequencies. This article presents a behavioral circuit model for hybrid ME antennas, which can simulate RF energy harvesting and sensing operations during circuit simulations. The ME antenna is connected to a CMOS energy harvester chip for wireless communication in fully integrated implantable devices. The measurements in this paper demonstrate simultaneous low-frequency wireless magnetic sensing and high-frequency wireless energy harvesting with one dual-mode ME antenna. The proposed antenna model can be used for design optimizations in energy harvesting circuits.
IEEE OPEN JOURNAL OF CIRCUITS AND SYSTEMS
(2023)
Article
Materials Science, Multidisciplinary
A. R. Will-Cole, Chuangtang Wang, Nirjhar Bhattacharjee, Yongmin Liu, N. X. Sun
Summary: The study demonstrated that voltage/electric-field control of ultrafast magnetization dynamics can achieve electronic tuning with reduced power consumption, improved response time, and more compact form factor, potentially driving the next generation of optomagnetic devices. Experimental results showed that magnetization rotation can be achieved with lower electric field without laser heating, and a mixture of volatile and nonvolatile behaviors were observed.
Article
Engineering, Electrical & Electronic
Nirjhar Bhattacharjee, Krishnamurthy Mahalingam, Adrian Fedorko, Alexandria Will-Cole, Jaehyeon Ryu, Michael Page, Michael McConney, Hui Fang, Don Heiman, Nian Xiang Sun
Summary: The effect of crystalline disorder on the interfacial and magnetic properties of topological insulator/ferromagnet heterostructures was investigated. Interesting phenomena such as enhanced magnetic anisotropy and spin-orbit torque were observed, along with the spontaneous exchange bias at low temperatures.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Ziyue Xu, Adam Khalifa, Ankit Mittal, Mehdi Nasrollahpourmotlaghzanjani, Ralph Etienne-Cummings, Nian Xiang Sun, Sydney S. Cash, Aatmesh Shrivastava
Summary: This paper reviews the design of popular radio frequency energy harvesting systems and proposes a new method to analyze their circuit architectures. It provides guidance for the design of RF energy harvesting rectifier circuits and discusses different application scenarios and design considerations.
IEEE OPEN JOURNAL OF CIRCUITS AND SYSTEMS
(2022)
