A5015039001- Magnetic properties of thin films
- Magnetic Properties and Applications
- Metallic Glasses and Amorphous Alloys
- Energy Harvesting in Wireless Networks
- Advanced Sensor and Energy Harvesting Materials
- Innovative Energy Harvesting Technologies
- Theoretical and Computational Physics
- Magneto-Optical Properties and Applications
- Physics of Superconductivity and Magnetism
- Radio Frequency Integrated Circuit Design
- Magnetic Properties of Alloys
- Microwave Engineering and Waveguides
- Wireless Power Transfer Systems
- RFID technology advancements
- Electromagnetic Compatibility and Noise Suppression
Southeast University
2005-2024
State Key Laboratory of Millimeter Waves
2023-2024
Distributed micro-energy harvesting devices offer the flexibility, sustainability, and multi-scenario applicability that will be critical to wearable electronic products in Internet of Things. The radiofrequency triboelectric (RF-TE) hybrid energy harvester (HEH) concept prototype is presented for first time, simultaneously capture from ambient electromagnetic waves biological motions. proposed system consists a rectenna, nanogenerator (TENG), power management circuit (PMC). Among them,...
For spintronics application, which requires fast field switching, it is important to have a kind of soft magnetic material with large damping coefficient. Here, we present the studies Nd dopant-level-dependent coefficient Nd${}_{x}$-Py${}_{(1\ensuremath{-}x)}$ thin films (30 nm) in dilute region utilizing ferromagnetic resonance (FMR). With content increasing, film structure was found be changing from polycrystalline amorphous when around 3.4%. Meanwhile, magnetization decreases linearly....
(Ni <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">83</sub> Fe xmlns:xlink="http://www.w3.org/1999/xlink">17</sub> ) xmlns:xlink="http://www.w3.org/1999/xlink">1-x</sub> -Gd xmlns:xlink="http://www.w3.org/1999/xlink">x</sub> thin films (30 nm) are deposited by sputtering at room temperature and studied using X-ray diffraction, vibrating sample magnetometer, ferromagnetic resonance (FMR). The film structure changes from polycrystalline to...
Patterned magnetic films with nano-scaled dots exhibit some special properties. In this paper, we investigate the in-plane shape anisotropy and magnetization dynamic damping in permalloy (Ni80Fe20) arrays of submicron rectangular elements using ferromagnetic resonance (FMR). The FMR linewidth exhibits a dependence on element size, mainly comes from contribution intrinsic damping. Also two-magnon scattering plays an important role is reduced increasing aspect ratio. coefficient decreases...
Abstract The demand for wearable monitoring devices in contemporary medicine has significantly increased, especially dynamic environments where traditional bulky equipment is impractical. Conventional flexible or systems suffer from limited air and moisture permeability, lack of stretchability, high power consumption, which restrict their long‐term usage comfort. Herein, a stretchable breathable backscattered system (SBBMS) introduced, integrated with fabric substrate. To address the...
The Tb(4 nm)/Cr(t nm)/Fe(5 nm) trilayers with different thicknesses of Cr layer have been investigated by X-ray diffraction, vibrating sample magnetometer, and ferromagnetic resonance. When is thinner than 1.8 nm, the coupling Tb Fe leads to higher saturation magnetization (M <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">s</sub> ) that Fe(5 film. On other hand, Gilbert damping constant α in all found exceed magnitude Fe. In particular, when 1...
The nonuniform demagnetizing field in rectangular elements and the effect of neighbouring were calculated numerically by magnetostatic theory. All 10nm thick 300 nm wide with varying aspect ratio 1,2,4. interelements spacing changes from 100nm to 1100nm. It was found that non-uniformities both magnitude direction occur small elements. When between is larger than 1m we can almost neglect all interaction However, for element width 900nm, neighboring stronger.