Article
Engineering, Electrical & Electronic
Miaomiao Cheng, Jingen Wu, Xianfeng Liang, Ruohao Mao, Hui Huang, Dengfeng Ju, Zhongqiang Hu, Jinghong Guo, Ming Liu
Summary: Magneto-mechano-electric (MME) generator converts magnetic energy into electrical energy via mechanical strain/stress mediated magnetoelectric coupling effect. In this work, a hybrid multi-mode MME device is proposed with broadened bandwidth and enhanced energy harvesting performance by developing the constitutive equation of MME structure. The designed hybrid generator includes three power generation units: piezoelectric energy harvesting (PEH) unit, electromagnetic energy harvesting (EEH) unit, and magnetostrictive energy harvesting (MEH) unit. Moreover, the corresponding energy harvesting management circuit is designed for these units to achieve the maximum harvest of magnetic field energy. At the magnetic field of 5.57 Oe, the maximum output power of the three generating units are 0.71 mW (PEH), 1.694 mW (EEH), and 0.27 mW (MEH), respectively. The proposed hybrid generator can provide a stable power for temperature and humidity sensors integrated with Bluetooth wireless communication technology by harvesting stray magnetic field energy, and has the potential to power wireless sensors.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Engineering, Environmental
Rui Feng, Bowei Liu, Yang Zhang, Ying Ou, Shaokun Song, Lijie Dong
Summary: A flexible multiferroic film with a high magneto-mechano-electric (MME) voltage coefficient is presented by modulating slender 1-D magnetic nanomaterials. The low ratio of magnetic nanofibers in nanocomposite films allows for flexibility and enhanced mechano-electric output signals can be observed when a magnetic field is applied.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Min Sub Kwak, Mahesh Peddigari, Ha Young Lee, Yuho Min, Kwi-Il Park, Jong-Hyun Kim, Woon-Ha Yoon, Jungho Ryu, Sam Nyung Yi, Jongmoon Jang, Geon-Tae Hwang
Summary: This article demonstrates a magneto-mechano-electric (MME) generator that converts a gentle alternating current magnetic field into electricity. By integrating a piezoelectric single crystal and an electromagnetic induction structure, the generator achieves a high output power, suitable for operating a high-power consumption IoT environmental monitoring system.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
So Hyeon Kim, Atul Thakre, Deepak Rajaram Patil, Sung Hoon Park, Timothy Alexander Listyawan, Nokeun Park, Geon-Tae Hwang, Jongmoon Jang, Kwang-Ho Kim, Jungho Ryu
Summary: This study systematically investigates the effects of different adhesive interfacial layers on the output power and environmental and fatigue resistances of MME energy harvesters. An optimized design with a specific adhesive interfacial layer significantly enhances the output power and stability of the MME generator under a magnetic field. This reliable MME generator shows promise as a low-cost and efficient autonomous power source for various applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Review
Chemistry, Analytical
Srinivas Pattipaka, Jaewon Jeong, Hyunsu Choi, Jungho Ryu, Geon-Tae Hwang
Summary: MME composite devices have been widely used for energy harvesting and magnetic field sensing due to their high-performance, simple structure, and stable properties. These devices can convert stray magnetic fields into electric signals, generating output power and detecting ultra-tiny magnetic fields, making them suitable for various applications.
Article
Chemistry, Physical
Zhonghui Yu, Hao Qiu, Zhaoqiang Chu, Zechen Sun, Mohammad Javad Pourhosseini Asl, Faxin Li, Shuxiang Dong
Summary: This study presents a symmetric, mechanical coupled dual-mode MME energy harvester to enhance the output power. The experimental results show that the dual-mode symmetric MME energy harvester can achieve a significant improvement in output power, which can directly drive LED lighting and successfully scavenge the magnetic field energy around household appliances.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Zhaoqiang Chu, Zechen Sun, Bo Wang, Kaixin Song, Jiazeng Wang, Junqi Gao, Shuxiang Dong
Summary: A new clamped-clamped (C-C) MME generator is proposed to harvest ambient magnetic noise and solve the dependence issue in conventional generators. The experimental results demonstrate that by optimizing the design, the C-C MME generator can generate high output power under low-intensity magnetic fields, which is sufficient to continuously drive IoT sensors.
ADVANCED ENERGY MATERIALS
(2022)
Article
Thermodynamics
Ajeet Kumar, Sung Hoon Park, Deepak Rajaram Patil, Geon-Tae Hwang, Jungho Ryu
Summary: The aspect ratio of piezoelectric constituents significantly affects the output electric potential of the energy harvester, with magnetostrictive vibrations dominating the generated output energy. The experimental results are in good agreement with the finite element analysis results.
Article
Chemistry, Multidisciplinary
Min Sub Kwak, Kyung-Won Lim, Ha Young Lee, Mahesh Peddigari, Jongmoon Jang, Chang Kyu Jeong, Jungho Ryu, Woon-Ha Yoon, Sam Nyung Yi, Geon-Tae Hwang
Summary: This paper presents a multiscale micro- and nano-structured magneto-mechano-triboelectric nanogenerator (MMTENG) enabled by a salt particle imprinting process, which can power an internet of thing (IoT) sensor. The energy device demonstrates good output stability and provides direct power supply for an IoT temperature sensor.
Article
Mechanics
Yongkun Wang, Jin Xu, Ni Li, Yang Shi
Summary: This paper presents a nonlinear tristable magnetic energy harvester (TMEH) and analyzes the sensitivity of its dynamic characteristics to system parameters. The nonlinear magnetic force between magnets is quantitatively analyzed using magnetic dipole method, and the magnetic moment from the external ac magnetic field is derived. Furthermore, a magneto-mechano-electric (MME) coupled model for TMEHs is developed using Euler Bernoulli-beam theory and the extended Hamilton principle.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2023)
Article
Chemistry, Multidisciplinary
Zhonghui Yu, Jikun Yang, Jiawei Cao, Lang Bian, Zhanmiao Li, Xiaoting Yuan, Zehuan Wang, Qunyang Li, Shuxiang Dong
Summary: In this study, a ceramic material with high piezoelectric coefficient and low dielectric loss was reported, and a magneto-mechano-electric coupled energy harvester based on this material was designed. The experiments showed that the energy harvester exhibited strong self-resonance effect and could generate high power density electrical output. This study provides a potential energy solution for self-powered sensor applications.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Deepak R. Patil, Seungah Lee, Atul Thakre, Ajeet Kumar, Hyunseok Song, Dae-Yong Jeong, Jungho Ryu
Summary: The effect of the position and weight of the magnet proof mass on the output performance of the magneto-mechano-electric generator was investigated, and it was found that the maximum power increased to 5.35 mW with a lighter magnet proof mass at the optimized position, which was 210% of the previous study.
JOURNAL OF MATERIOMICS
(2023)
Article
Chemistry, Physical
Mahesh Peddigari, Han-Sol Kim, Naveen Kumar, Jong-Jin Choi, Woon-Ha Yoon, Jongmoon Jang
Summary: Magneto-mechano-electric (MME) generators are being investigated as a sustainable power source for IoT systems due to their ability to efficiently harvest electrical energy from magnetic field noise. WS-MME generators have demonstrated excellent performance with high power output and long lifespan, paving the way for commercialization of MME generators for wireless sensor technology.
Article
Chemistry, Physical
Deepak R. Patil, Seungah Lee, Atul Thakre, Ajeet Kumar, Dae-Yong Jeong, Jungho Ryu
Summary: Magneto-mechano-electric (MME) generators are important for powering IoT sensor devices. In this study, a synergetic approach using a magnetic flux concentrator (MFC) is developed to achieve high power over a wide bandwidth. The MME generator can continuously operate multiple wireless sensors and data communication systems.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Engineering, Electrical & Electronic
Deepak Rajaram Patil, Seung Hee Lee, Sung Hoon Park, Jungho Ryu, Dae-Yong Jeong
Summary: This paper introduces the concept of a magnetic lens, composed of high permeability ceramic ferrites, to enhance the output performance of a Magneto-Mechano-Electric (MME) energy generator. By concentrating the weak magnetic flux onto the magnetic constituents in the MME structure, the magnetic lens increases the output voltage of the MME generator. The effectiveness of the magnetic lens as a magnetic flux concentrator is evaluated through Finite Elemental Analysis and experimentally verified using weak fields from a Helmholtz coil. Depending on the configuration of the magnetic lens, the output of the MME generator varies. A magnetic lens composed of four ferrites exhibited a 288% and 125% enhancement in output compared to the MME generator without a lens and with a lens composed of one ferrite, respectively.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Physics, Multidisciplinary
K. Manikandan, N. Vishnu Priya, M. Senthilvelan, R. Sankaranarayanan
Summary: This study investigates matter rogue wave (RW) solutions in both attractive-attractive and repulsive-repulsive two-component Bose-Einstein condensates (BECs), and explores their dynamical properties through various trap potentials.
WAVES IN RANDOM AND COMPLEX MEDIA
(2022)
Article
Materials Science, Ceramics
Purusottam Reddy Bommireddy, M. Chandra Sekhar, Young-Woong Lee, Mirgender Kumar, Youngsuk Suh, Si-Hyun Park
Summary: In this study, Co-Ni hexacyanoferrate electrodes were synthesized via a hydrothermal approach and their properties were studied. The binder-free composites exhibited battery-like electrochemical storage mechanisms, with CoNi2HCF@NF composite showing the best charge storage properties. Furthermore, a hybrid supercapacitor device using CoNi2HCF@NF as the battery type and activated carbon as supercapacitor electrodes achieved high energy density and good cycling performance.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
C. Yogeswari, T. C. Sabari Girisun, R. Nagalakshmi
Summary: The novel 2-Nitroaniline - Poly (methylmethacrylate) electrospun nanofibers exhibit intensity dependent nonlinear absorption transition, with a decrease in the nonlinear absorption coefficient and switch over in the sign indicating a strengthening of saturable absorption and weakening of two photon absorption. The addition of PMMA alters the band structure and leads to strong green and red emission peaks, with potential application in optical switching and power limiting devices.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Environmental Sciences
G. Antilen Jacob, S. P. Sathiya Prabhakaran, G. Swaminathan, R. Justin Joseyphus
Summary: The research indicates that the addition of FeNi alloy catalyst can enhance the pyrolytic activity and thermal kinetics of mustard biomass, which is crucial for producing biofuels.
Article
Physics, Applied
Kanagaraj Chinnadurai, Baskaran Natesan
Summary: This study predicts the magnetic and half-metallic properties of Cr(3)Z alloys using density functional theory calculations. The results show that only Cr3Sb alloy exhibits half-metallic behavior, while the others behave as typical metallic materials. The total magnetic moment is mainly contributed by Cr atoms in all the Cr(3)Z alloys.
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2022)
Article
Materials Science, Multidisciplinary
B. Karthikeyan, R. Vettumperumal
Summary: This study focused on the optical properties of magnesium orthosilicate (Mg2SiO4) and its composite materials, synthesized through a sol-gel method. Various techniques including PXRD, FT-IR, and UV-vis were used to analyze the structural and optical properties of the samples, revealing information such as crystalline size, absorption coefficients, optical band gap energies, and refractive index. The study also explored the non-linear optical properties of the samples and their potential applications in optical devices.
Article
Chemistry, Inorganic & Nuclear
R. Vettumperumal, N. R. Dhineshbabu, B. Karthikeyan
Summary: The study focused on examining the behavior of moringa oleifera gum, a material that has increased the cultivation of the tree due to its role in reducing global warming. The researchers explored the properties of the gum using various methods and found that it has a crystalline nature, high dielectric constant, and UV shielding efficiency, making it suitable for applications in UV shielding and detection.
PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS
(2022)
Article
Chemistry, Multidisciplinary
Min Sub Kwak, Mahesh Peddigari, Ha Young Lee, Yuho Min, Kwi-Il Park, Jong-Hyun Kim, Woon-Ha Yoon, Jungho Ryu, Sam Nyung Yi, Jongmoon Jang, Geon-Tae Hwang
Summary: This article demonstrates a magneto-mechano-electric (MME) generator that converts a gentle alternating current magnetic field into electricity. By integrating a piezoelectric single crystal and an electromagnetic induction structure, the generator achieves a high output power, suitable for operating a high-power consumption IoT environmental monitoring system.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Sung-Hyun Kim, Ha Young Lee, Jae-Hoon Ryu, Jeong-Yeon Lee, Han-Sol Kim, Hyung Soo Ahn, Dong Han Ha, Sam Nyung Yi
Summary: This study aimed to enhance surface plasmon resonance by combining Ag nanoparticles and an asymmetric crater structure. The results showed that the Raman intensity inside the crater with Ag nanoparticles and nanowires was 22 times higher compared to a flat area without nanoparticles. However, an increase in the amount of nanowires led to a decrease in Raman intensity.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Chemistry, Physical
Ha Young Lee, Min Sub Kwak, Geon-Tae Hwang, Hyung Soo Ahn, Dong Han Ha, Sam Nyung Yi
Summary: In this study, a novel energy harvesting technique was designed to utilize radiation pressure for generating electricity. By modifying the surface of a GaAs wafer and using piezoelectric materials and Ni metal, the intensity of light was significantly increased, resulting in a current output. The enhancement of light was analyzed through surface-enhanced Raman scattering and supported by simulations.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
J. Kaarthik, C. Kaushiga, G. Sradha, Nayak Ram, Salla Gangi Reddy, K. C. Sekhar, Annapureddy Venkateswarlu
Summary: Researchers have improved the energy harvesting and storage capabilities of BCZT ceramic materials through the addition of Praseodymium (Pr), making them a promising option for sustainable power generation in electronic devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Electrical & Electronic
C. Kaushiga, J. Kaarthik, G. Sradha, Nayak Ram, Salla Gangi Reddy, V. Annapureddy
Summary: We investigated the microstructure, dielectric, and resistive switching properties of bulk Ba0.7Sr0.3TiO3 (BST) ceramics using a modified sintering approach. The results showed that the DS-processed ceramics had smaller grain size and improved grain size distribution compared to the CSS-processed ceramics. The DS ceramics also exhibited better resistive switching behavior in the metal-insulator-metal (MIM) structures.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Review
Materials Science, Multidisciplinary
A. R. Jayakrishnan, J. P. B. Silva, K. Kamakshi, D. Dastan, V Annapureddy, M. Pereira, K. C. Sekhar
Summary: Dielectric capacitors offer high-power density and ultrafast discharging times, making them potential candidates for pulsed power technologies. However, low energy density in different dielectric materials limits their real time applications. Relaxor ferroelectrics have emerged as the most promising solution for energy storage capacitors. This review discusses the latest developments on lead-free relaxor ferroelectrics and strategies to enhance their energy storage performance.
PROGRESS IN MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Tae-Kyung Lee, Seung-Wook Kim, Dae-Yong Jeong
Summary: Fe-based amorphous metal powders were prepared using different atomization methods, and their magnetic properties were characterized. The amorphous metal powder manufactured using the high-speed water screen atomization process had lower eddy current loss and higher initial permeability due to the formation of a thin and uniform oxide layer. The magnetic cores fabricated with the amorphous powders produced by the high-speed water screen atomization method exhibited smaller coercive field and lower core loss values.
ELECTRONIC MATERIALS LETTERS
(2023)
Article
Physics, Multidisciplinary
P. Vipin, R. Sankaranarayanan
Summary: The dynamics of a Brownian particle in Morse potential under thermal fluctuations is investigated by numerically integrating the corresponding Langevin equation. The dependence of Kramer's rate on temperature and viscosity of the medium is studied by mean first passage time. An approximate analytical expression for the rate constant is found and it shows a temperature dependent pre-factor for the Arrhenius equation. Numerical simulations are consistent with the analytical approximations.
PRAMANA-JOURNAL OF PHYSICS
(2023)
