Article
Engineering, Electrical & Electronic
K. Yadagiri, Jingwei Long, Yuxi Wang, Zhifeng Zhu, T. Wu
Summary: This article presents low damping FeGaB and Al2O3/FeGaB thin films. FeGaB exhibits lower damping factor than Al2O3/FeGaB. The coercive field and magnetic anisotropy of Al2O3/FeGaB thin films are enhanced due to static magnetization. The magnetic domain wall velocity is larger in FeGaB thin film due to its low anisotropy and the impact of spin-orbit coupling. These findings suggest the potential applications of these films in microwave and spintronic devices.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Review
Chemistry, Multidisciplinary
Francisco Pasadas, Pedro C. Feijoo, Nikolaos Mavredakis, Anibal Pacheco-Sanchez, Ferney A. Chaves, David Jimenez
Summary: This article reports the progress made towards the development of a modular compact modeling technology for graphene field-effect transistors (GFETs) that allows for the electrical analysis of GFET-based integrated circuits. It presents a set of primary and secondary models to capture both the ideal and non-ideal response of GFETs, and demonstrates consistency between simulation and experimental data. Furthermore, it discusses the challenges and collaboration opportunities in scaling up the GFET modeling technology towards higher technology readiness levels.
ADVANCED MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Yadagiri Karampuri, Yuxi Wang, Tao Wu
Summary: This article illustrates the effects of multilayer film stack structure on magnetodynamic properties, such as dipolar coupling and exchange stiffness, and finds that the thickness and temperature of the film stack have significant impacts on the magnetic properties. The resonance peaks at different frequencies provide parameters like anisotropy and damping factor.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Physics, Applied
Ziyao Feng, Yang Liu, Xiang Xi, Lai Wang, Xiankai Sun
Summary: By harnessing the properties of phonons on a chip, researchers have developed a new type of overlay slot phononic waveguide that can overcome the limitations of current waveguides. By patterning a thin silicon cladding layer on an unetched gallium-nitride-on-sapphire substrate, this new waveguide enables integration with electronic and photonic elements on the same chip. Experimental results show the guiding and power splitting capabilities of gigahertz surface acoustic waves in these waveguides, with low propagation loss. Theoretical predictions suggest that a phononic bound state in the continuum can be achieved under special conditions.
PHYSICAL REVIEW APPLIED
(2023)
Article
Multidisciplinary Sciences
Honglie Song, Guoquan Luo, Ziyao Ji, Renheng Bo, Zhaoguo Xue, Dongjia Yan, Fan Zhang, Ke Bai, Jianxing Liu, Xu Cheng, Wenbo Pang, Zhangming Shen, Yihui Zhang
Summary: In this study, a new design strategy utilizing stacked multilayer network materials is proposed to achieve high elastic stretchability and function density for stretchable inorganic electronics. The elastic stretchability of serpentine interconnects is significantly enhanced compared to the use of soft elastomers in previous studies.
Article
Materials Science, Multidisciplinary
K. Yadagiri, Y. Wang, T. Wu
Summary: The multilayer structure of FeGaB thin films is suitable for microwave, magnonics, spin caloritronics, and spintronics applications. By manipulating the magnetic domain width and studying its relationship with spin-orbit coupling and magnetic dipolar fields, the critical domain can be controlled. In multilayers, the critical domain width is 48 nm.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Computer Science, Information Systems
Gilang Raka Rayuda Dewa, Cheolsoo Park, Illsoo Sohn
Summary: The integration of IEEE802.11p and 5G New Radio has enabled the development of an efficient and cost-effective vehicle-to-everything (V2X) technology for intelligent transportation systems. However, the dynamic nature of vehicular networks leads to frequent network outages and renewal requests, thereby diminishing overall performance. To address this problem, a low-complexity distributed algorithm based on hierarchical affinity propagation is proposed to determine data routing more efficiently among local vehicles.
IEEE INTERNET OF THINGS JOURNAL
(2023)
Article
Engineering, Electrical & Electronic
Hayden Bialek, Matthew L. Johnston, Arun Natarajan
Summary: This article presents a novel architecture for low-power RXs that achieves low power consumption, high sensitivity, and interferer tolerance. The proposed architecture performs well in terms of operating range, sensitivity, and power consumption.
IEEE JOURNAL OF SOLID-STATE CIRCUITS
(2023)
Article
Nanoscience & Nanotechnology
Yunong Xie, Donglai Zhong, Chenwei Fan, Xiaosong Deng, Lian-Mao Peng, Zhiyong Zhang
Summary: CNT transistors and ICs built on randomly oriented CNT films demonstrate excellent temperature stability and performance in cryogenic electronics applications, showing great potential for high-performance devices in low-temperature environments.
ADVANCED ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Jaeyong Jeong, Seong Kwang Kim, Jongmin Kim, Dae-Myeong Geum, Duckhyun Kim, Eunju Jo, Hakcheon Jeong, Juyeong Park, Jae-Hyung Jang, Shinhyun Choi, Inyong Kwon, Sanghyeon Kim
Summary: Next-generation wireless communication requires high-frequency, multi-functionality, and power-efficient systems. To achieve this, researchers have been working on the monolithic integration of III-V compound semiconductor and Si CMOS technology. In this study, they successfully demonstrated heterogeneous and monolithic 3D analog/RF-digital mixed-signal integrated circuits that combine InGaAs HEMTs with high f(T) and f(MAX) and Si CMOS mixed-signal circuits, achieving high unity current gain cutoff frequency and power gain cutoff frequency without interference.
Article
Computer Science, Information Systems
De-Ming Wang, Jian-Guo Hu, Jing Wu
Summary: This article proposes a fully integrated low-cost RFID reader System-on-a-Chip (SoC) that integrates RF transceiver and analog circuit, baseband protocol processing, microcontroller, memory, and interface circuit into a single chip. The reader IC supports multiple communication protocols and has good anti-noise performance.
IEEE INTERNET OF THINGS JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Dezhi Chen, Shichong Zhang, Baodong Bai, Zhixiang Zhang, Zhaoning Yang
Summary: In this paper, a three-port isolated DC/DC converter with a decoupling magnetic integrated high-frequency transformer (DMIHFT) is proposed for the DC microgrid. By reducing the number of discrete transformers and integrating three transformers into a single common core, magnetic decoupling is achieved, resulting in increased power density and reliability of the power converter.
IET POWER ELECTRONICS
(2023)
Article
Nanoscience & Nanotechnology
Zejie Yu, Xiankai Sun
Summary: This study successfully demonstrates gigahertz single-sideband acousto-optic modulation on an etchless lithium niobate integrated platform, allowing convenient modulation of upper or lower sideband light. The achieved 3 GHz frequency shifter exhibits high extinction ratios, enabling various photonic applications such as optical signal processing, sensing, and ion trapping.
Article
Nanoscience & Nanotechnology
Yuxi Wang, Karampuri Yadagiri, Peng Wu, Tao Wu
Summary: In this study, the temperature dependent magnetostatic and dynamic properties of Iron Gallium Boron (FeGaB) thin films were investigated. The analysis revealed that the grain size and anisotropy of the thin films increased with annealing temperature. The ferromagnetic resonance spectra showed that the damping factor, linewidth, and resonance magnetic fields also increased with annealing temperature, attributed to the change in film crystallization. Additionally, the angle dependent anisotropic magnetoresistance and planar Hall effect indicated an increase in the percentage of magnetoresistance change due to high annealing temperature.
Article
Engineering, Electrical & Electronic
Adam Charnas, Jackson Anderson, Jie Zhang, Dongqi Zheng, Dana Weinstein, Peide D. D. Ye
Summary: The remarkable dc performance of ultra thin indium oxide transistors allows for high-performance back-end-of-line (BEOL) and monolithically integrated logic and memory devices. The radio frequency (RF) performance of these transistors with high working frequency is characterized for the first time, reporting a new record high cutoff frequency (fT) and maximum oscillation frequency (fmax) among amorphous metal-oxide-semiconductor transistors. Detailed statistical measurements provide insight into optimizing device parasitics and future scaling trends.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Chemistry, Multidisciplinary
Wei Su, Zhongqiang Hu, Yaojin Li, Yongliang Han, Yicheng Chen, Chenying Wang, Zhuangde Jiang, Zhexi He, Jingen Wu, Ziyao Zhou, Zhiguang Wang, Ming Liu
Summary: Measurement of 3D vector magnetic field is vital for magnetic navigation, biomedical diagnosis, and microimaging. Traditional 3D magnetic sensors have limitations in size and spatial resolution, but recent spin orbit torque sensors based on ferromagnetic/heavy-metal heterostructures can detect magnetic field components individually. However, their practical application is hindered by large driving current density and complex driving procedure. In this study, 3D magnetic sensors with significantly reduced driving current density are reported, along with a record-high sensitivity and the ability to work with ultralow driving current density.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Physical
Yuxin Cheng, Shishun Zhao, Ziyao Zhou, Ming Liu
Summary: The full control of multiferroic interfacial magnetism using an electric field is a challenging task for MEMS and has the potential to revolutionize electronics operation mechanisms. By combining highly correlated ferroic orders and interfacial magnetoelectric interactions, devices beyond CMOS can be achieved. These devices utilize electric fields to regulate magnetization, leading to downsizing, improved performance, and reduced power consumption. This review summarizes recent advances in voltage control of interfacial magnetism with different material systems and gating methods, demonstrating five classic mechanisms and discussing the potential of controlling skyrmions and 2D material magnetization. The results indicate the universal applicability of E-field gating and predict significant progress in spintronics.
Article
Chemistry, Physical
Zhe Wang, Jinyan Zhao, Nan Zhang, Wei Ren, Kun Zheng, Yi Quan, Jian Zhuang, Yijun Zhang, Luyue Jiang, Lingyan Wang, Gang Niu, Ming Liu, Zhuangde Jiang, Yulong Zhao, Zuo-Guang Ye
Summary: Lead-free bismuth sodium titanate (BNT) ceramics with a composition of x = 3.5 demonstrate a large strain response of 0.61%. The coexistence of ferroelectric and relaxor domain structures, along with the substitution of antiferroelectric NN, contribute to the enhanced strain response. This study provides new insights into the interplay between mesoscopic domains and macroscopic electrical properties in BNT-based piezoceramics.
JOURNAL OF MATERIOMICS
(2023)
Article
Chemistry, Multidisciplinary
Bohan Chen, Wenxuan Zhu, Tian Wang, Bin Peng, Yiwei Xu, Guohua Dong, Yunting Guo, Haixia Liu, Houbing Huang, Ming Liu
Summary: In this study, high-quality freestanding single-crystalline PbZrO3 membranes were obtained using a water-soluble sacrificial layer method. PbZrO3/PVDF composites with different film thicknesses were constructed, and their dielectric properties and polarization response significantly improved, achieving a record-high energy density. Phase-field simulation showed that inserting PbZrO3 membranes effectively reduced breakdown paths, making single-crystalline AFE oxide membranes useful for composite-based high-power capacitors.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yunting Guo, Bin Peng, Ruibin Qiu, Guohua Dong, Yufei Yao, Yanan Zhao, Ziyao Zhou, Ming Liu
Summary: This article introduces a new method to construct a scroll-like 3D memory structure using self-rolling-up single-crystalline ferroelectric oxides. Experimental results show that this new structure can achieve high-density information storage, providing a new and general method for compact, high-density, and 3D memories from oxide materials.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Haixia Liu, Wenxuan Zhu, Qi Mao, Bin Peng, Yiwei Xu, Guohua Dong, Bohan Chen, Ruobo Peng, Yanan Zhao, Ziyao Zhou, Sen Yang, Houbing Huang, Ming Liu
Summary: In this study, boron nitride (BN) nanosheets were added to polyetherimide (PEI) to improve the breakdown strength (E-b) and high-temperature endurance, while freestanding single-crystalline BaZr0.2Ti0.8O3 (BZT) membranes with high dielectric constant were fabricated to enhance the energy density (U-e). The resulting laminated PEI-BN/BZT/PEI-BN composites showed a maximum U-e of 17.94J cm(-3) at 730 MV m(-1) at room temperature, which is more than double that of pure PEI. The composites also demonstrated excellent dielectric-temperature stability between 25 and 150 degrees C, with an outstanding U-e = 7.90 J cm(-3) at 650 MV m(-1) under 150 degrees C, surpassing other high-temperature dielectric capacitors reported thus far. Phase-field simulation revealed that the depolarization electric field at the BZT/PEI-BN interfaces effectively reduced carrier mobility, resulting in improved E-b and U-e over a wide temperature range. This work provides a promising and scalable route for developing sandwich-structured composites with remarkable energy storage performances for high-temperature capacitive applications.
ADVANCED MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Wang Zhan, Qi Zhang, Cuiling Zhang, Zihao Yang, Niancai Peng, Zhuangde Jiang, Ming Liu, Xiaohui Zhang
Summary: A strain sensor based on double-network hydrogel has been developed, which has excellent mechanical properties and sensing stability, making it suitable for long-term tracking of human motions.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Physics, Applied
Guohua Wu, Zhong Yu, Rongdi Guo, Zhiguang Wang, Hong Wang, Zhongqiang Hu, Ming Liu
Summary: To achieve compact and lightweight power conversion devices, MnZn ferrite doped with high-valent Sn4+ ions is used to manipulate electromagnetic properties and suppress high-frequency core losses. The Sn4+ ions mainly occupy grain boundaries rather than dissolving into the lattice, significantly impacting the electromagnetic properties. With increasing Sn substitution, initial permeability and saturation induction decrease monotonically. A Sn substitution content of 0.003 reduces core losses to 457 kW m(-3) at 3 MHz, 30 mT, and 25 degrees C, effectively suppressing eddy current loss and residual loss. The sample with Sn content of 0.003 demonstrates excellent overall electromagnetic properties, making it potentially useful in high-frequency transformers, converters, and power sources.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Ruibin Qiu, Bin Peng, Haixia Liu, Yunting Guo, Haowen Tang, Ziyao Zhou, Ming Liu
Summary: The study focuses on the growth and preparation of high-quality freestanding single-crystalline oxide membranes using phase-pure Sr3Al2O6 thin films. By fabricating heterostructures and eliminating secondary phases, crack-free membranes of SrRuO3 can be obtained. The presence of a secondary phase, identified as SrAl2O4, in the sacrificial layer affects the mechanical properties and cracking behavior of the freestanding membranes.
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
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
Physics, Multidisciplinary
Ruo-Bo Peng, Guo-Hua Dong, Ming Liu
Summary: Flexible electronics have attracted significant interest in the research community due to their broad applications in information storage, energy harvesting, and wearable devices. Researchers have utilized freestanding single crystal oxide thin films to achieve extraordinary functionalities, thanks to their super elasticity, ease of transfer, and exceptional ferro/electric/magnetic properties. By employing state-of-the-art synthesis methods, functional oxide films of various materials can be obtained in a freestanding phase, eliminating restrictions from growth substrates and enabling transfer to other flexible layers. This work introduces wet etching and mechanical exfoliation methods for preparing freestanding single crystal oxide thin films, reviews their applications in ferroelectric memory, piezoelectric energy harvesters, dielectric energy storage, correlated oxide interfaces, and novel freestanding oxide structures, and provides a discussion on recent research progress and future outlooks.
ACTA PHYSICA SINICA
(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)
