A5100672404- Magnetic properties of thin films
- Magnetic Properties and Applications
- Chalcogenide Semiconductor Thin Films
- Quantum Dots Synthesis And Properties
- Copper-based nanomaterials and applications
- ZnO doping and properties
- Magnetic and transport properties of perovskites and related materials
- Physics of Superconductivity and Magnetism
- Advanced Memory and Neural Computing
- Copper Interconnects and Reliability
- Theoretical and Computational Physics
- Quantum and electron transport phenomena
- Semiconductor materials and interfaces
- Multiferroics and related materials
- Nonlinear Dynamics and Pattern Formation
- Chaos control and synchronization
- Magnetic Properties of Alloys
- Metal and Thin Film Mechanics
- Anodic Oxide Films and Nanostructures
- Metallic Glasses and Amorphous Alloys
- Magneto-Optical Properties and Applications
- Semiconductor materials and devices
- Ferroelectric and Piezoelectric Materials
- Quantum Chromodynamics and Particle Interactions
- Nanoporous metals and alloys
National Tsing Hua University
2016-2025
Jiangxi Agricultural University
2025
BD Biosciences (United States)
2024
Chung Shan Medical University
2023
Chung Shan Medical University Hospital
2023
National University of Singapore
2002-2019
Conference Board
2018-2019
Alpha Omega Electromagnetics (United States)
2018-2019
National Hsinchu University of Education
2018
National Synchrotron Radiation Research Center
2014-2015
The influence of La doping on the crystal structure and multiferroic properties BiFeO3 (BFO) thin films was investigated. BFO-based pure perovskite phase were deposited BaPbO3∕Pt∕TiOx∕SiO2∕Si substrates by rf-magnetron sputtering. increased dielectric constant remanent polarization La-doped BFO due to lattice parameters an improved crystallinity. switching fatigue behavior significantly enhanced doping. in-plane magnetization-field curves revealed that room-temperature saturated magnetization with
Metallic nanoporous materials (MNMs) with well-ordered gyroid nanostructures are fabricated using a polymer nanochannels as template. Nanoporous Ni is successfully to give MNMs high porosity and surface area. This new approach for hybridization provides precisely controlled method fabricate nanohybrids applications. Detailed facts of importance specialist readers published "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted by...
The strong coupling between antiferromagnetism and ferroelectricity at room temperature found in BiFeO3 generates high expectations for the design development of technological devices with novel functionalities. However, multi-domain nature material tends to nullify properties interest complicates thorough understanding mechanisms that are responsible those properties. Here we report realization a thin film form single-domain behaviour both its magnetism ferroelectricity: entire shows...
High-strength polyimide mats have been formed from electrospun nanofibers of a rigid-rod-like poly(p-phenylene biphenyltetracarboximide) (see Figure). Non-woven aligned tensile strength 664 MPa and modulus 15.3 GPa. These high-performance with excellent mechanical properties heat resistance are expected to be useful for applications such as protective clothing heat-resistant filters.
Nonpolar resistive switching (RS), which is the coexistence of unipolar and bipolar RS characteristics, in Pt/MgO/Pt memory device with nonforming nature demonstrated. The ascribed to relatively high defect density MgO film deposited by using ion beam sputtering Ar atmosphere. results Auger electron spectroscopy x-ray photoelectron analyses combing temperature dependence resistance suggest that metallic Mg filaments are formed low state. voltage-polarity-independent RESET process implies may...
The shape control and formation mechanism of Fe3O4 nanoparticles (NPs) synthesized by a modified hot-injection method were investigated. Monodisperse nanocubes terminated at {100} planes with the average size 16.1 ± 0.9 nm injecting Fe precursor into reaction solution 290 °C slow injection rate 10 mL/h. When we increased monomer concentration in increasing to 20 mL/h or doubling same time, main NPs became {110} leading rhombicuboctahedral shape. was strongly affected intrinsic surface energy...
Heavy alkali metal treatment is a key factor to approach high efficiency in Cu(In, Ga)Se2 (CIGS) solar cells. Here, we show that the Cs-induced surface modification on CIGS thin-film cells, especially grain boundary reconstruction generated from cesium fluoride post-deposition (CsF-PDT). The CsInSe2 phase can be synthesized by CsF-PDT process without extra assistant species, and specifically favors boundaries (GBs), which was further characterized FE-EPMA, TEM, SIMS analysis. Cs-contained...
Kesterite with a high Ag content processed at low temperature without Cu<sub>Zn</sub>antisite defects using aqueous spray pyrolysis reaches 10% efficiency.
To address thermal stability issues for spintronic devices with a reduced size, we investigate spin-orbit torque in Co/Pt multilayers strong perpendicular magnetic anisotropy. Note that the arises from global imbalance of spin currents top and bottom interfaces each Co layer. By inserting Ta or Cu layers to strengthen top-down asymmetry, efficiency can be greatly modified without compromised Above all, builds up as number increases, realizing robust high spin-orbit-torque simultaneously structure.
We show how to extract messages masked by a chaotic signal of time-delay system with very high dimensions and many positive Lyapunov exponents. Using special embedding coordinate, the infinite-dimensional phase space is projected onto three-dimensional space, which enables us identify time delay from transmitted reconstruct dynamics unmask hidden message successfully. The extraction procedure illustrated simulations Mackey-Glass for two types masking schemes different kinds messages.
A highly ordered L10 FePt phase was directly achieved by using 2 MeV He-ion irradiation without conventional postannealing. The coercivity greater than 5700 Oe can be obtained after disordered irradiated at the beam current of several μA/cm2 with ion doses 2.4×1016 ions/cm2. high beam-current-density results in direct heating on samples. In addition, irradiation-induced process provides efficient microscopic energy transfer and creates excess point defects, which significantly enhances...
L 1 0 granular FePt–SiO2 films with a (001) preferred orientation and well-separated grains of 5.14nm were obtained by depositing atomic-scale Fe∕Pt∕SiO2 multilayers (MLs) on glass substrates subsequently annealing MLs at temperature 350°C. Large out-of-plane coercivity 7700Oe high ordering factor 0.83 achieved. Alternate depositions promoted the formation textures. Furthermore, because low surface energy SiO2 layers, tended to diffuse into grain boundaries FePt during annealing, which may...
In this study, advanced control of crystallographic orientations and magnetic properties self-assembled nanostructures via rational selections substrates is demonstrated. We show that in the perovskite−spinel BiFeO3−CoFe2O4 model system crystal orientation CoFe2O4 nanopillars can be tuned among (001), (011), (111), while BiFeO3 matrix fixed (001). Moreover, resultant appear various shapes: pyramid, roof, triangular platform, respectively. The tunable through approach enable material...
Antidot arrays with perpendicular anisotropy have been fabricated by depositing Co/Pt multilayers on the anodic aluminum oxide (AAO) templates prepared Si wafers. The antidot cover an area of about $10\text{ }{\text{cm}}^{2}$. size $(D)$ and edge-to-edge $(w)$ separation between two adjacent antidots are varied over a wide range from 7 to 46 nm 14 53 nm, respectively. magnetic properties magnetization process exhibit strong dependence separation. coercivity $({H}_{c})$ increases 140 Oe...
Nanoporous platinum (Pt) with a gyroid nanostructure was fabricated using nanoporous polymer nanochannels as template. The template obtained from the self-assembly of degradable block copolymer, polystyrene-b-poly(L-lactide) (PS-PLLA), followed by hydrolysis PLLA blocks. Templated electroless plating can be conducted under ambient conditions to create precisely controlled Pt high crystallinity in PS matrix. After removal matrix, well-interconnected successfully fabricated. Compared...
The considerable advances that have been made in the development of organotypic cultures failed to overcome challenges expressing tissue‐specific functions and complexities, especially for organs require multitasking complex biological processes, such as liver. Primary liver cells are ideal building blocks functional reconstruction, but limited by their rapid loss physiological integrity vitro. Here concept lattice growth used material science is applied develop a tissue incubator, which...
Self‐assembled vertical heterostructure with a high interface‐to‐volume ratio offers tremendous opportunities to realize intriguing properties and advanced modulation of functionalities. Here, composed two visible‐light photocatalysts, BiFeO 3 (BFO) ε ‐Fe 2 O ( ‐FO), is designed investigate its photoelectrochemical performance. The structural characterization the BFO‐FO heterostructures confirms phase separation BFO nanopillars embedded in ‐FO matrix. investigation band structure...