A5050914206- GaN-based semiconductor devices and materials
- ZnO doping and properties
- Ga2O3 and related materials
- Semiconductor materials and devices
- Topological Materials and Phenomena
- Semiconductor Quantum Structures and Devices
- 2D Materials and Applications
- Acoustic Wave Resonator Technologies
- Gas Sensing Nanomaterials and Sensors
- Metal and Thin Film Mechanics
- Advanced Condensed Matter Physics
- Copper-based nanomaterials and applications
- Graphene research and applications
- Silicon Carbide Semiconductor Technologies
- Electronic and Structural Properties of Oxides
- Maternal and fetal healthcare
- Ultrasonics and Acoustic Wave Propagation
- Solid State Laser Technologies
- Photorefractive and Nonlinear Optics
- Nanowire Synthesis and Applications
- Advanced Photocatalysis Techniques
- Phase-change materials and chalcogenides
- Electrocatalysts for Energy Conversion
- Radiation Detection and Scintillator Technologies
- Multiferroics and related materials
National Sun Yat-sen University
2016-2025
Crystal Research (United States)
2002-2025
National Cheng Kung University
2007-2025
Max Planck Institute for Solid State Research
2017
Taichung Veterans General Hospital
1994-2015
Chung Shan Medical University
2002-2009
National Yang Ming Chiao Tung University
2007-2009
Hungkuang University
2005
EM Photonics (United States)
2003
University of Central Florida
2003
Objective The aim of this study was to evaluate the efficacy transabdominal color Doppler ultrasound in diagnosing placenta previa accreta. Design Eighty patients with persistent underwent B‐mode and evaluation second third trimesters because they had a high risk Color imaging criteria used included diffuse intraparenchymal placental lacunar flow; focal bladder–uterine serosa interphase hypervascularity; prominent subplacental venous complex; loss vascular signals. images were interpreted...
Photoluminescent zero-dimensional (0D) quantum dots (QDs) derived from transition metal dichalcogenides, particularly molybdenum disulfide, are presently in the spotlight for their advantageous characteristics optoelectronics, imaging, and sensors. Nevertheless, up to now, little work has been done synthesize explore photoluminescent 0D WS2 QDs, especially by a bottom-up strategy without using usual toxic organic solvents. In this work, we report facile high-quality water-soluble tungsten...
Two-dimensional niobium carbide (Nb2C), a member of the emerging MXene family, has recently garnered attention in various fields, including materials science, physics, chemistry, and nanotechnology. In this review, we highlight material properties, synthesis strategies, applications Nb2C energy storage devices, catalysis, photovoltaic devices. We first introduce methods, structural characteristics, notable chemical physical properties. Then, discuss influence morphology, functional groups,...
Weak antilocalization (WAL) effects in ${\mathrm{Bi}}_{2}{\mathrm{Te}}_{3}$ single crystals have been investigated at high and low bulk charge-carrier concentrations. At density the WAL curves scale with normal component of magnetic field, demonstrating dominance topological surface states magnetoconductivity. neither applied field nor its component, implying a mixture conduction. due to shows no dependence on nature (electrons or holes) charge carriers. The observations an extremely large...
Objective.Together with novel photodetector technologies and emerging electronic front-end designs, scintillator material research is one of the key aspects to obtain ultra-fast timing in time-of-flight positron emission tomography (TOF-PET). In late 1990s, Cerium-doped lutetium-yttrium oxyorthosilicate (LYSO:Ce) has been established as state-of-the-art PET due its fast decay time, high light yield stopping power. It shown that co-doping divalent ions, such Ca2+and Mg2+, beneficial for...
Placenta previa increta/percreta (I/P) is a severe form of invasive placentation associated with massive peripartum hemorrhage, which often requires Cesarean hysterectomy. The pathogenesis multidimensional, involving decidual deficiency, endomyometrial damage and excessively deep trophoblast invasion into the uterus. In this study, annealing control primer-polymerase chain reaction (ACP-PCR) was used to identify differentially expressed genes, may impair resulting in placenta I/P. Placental...
Abstract Dirac-like topological insulators have attracted strong interest in optoelectronic application because of their unusual and startling properties. Here we report for the first time that pure insulator Bi 2 Te 3 exhibited a naturally ultrasensitive nonlinear absorption response to photoexcitation. The sheets with lateral size up few micrometers showed extremely low saturation intensities only 1.1 W/cm at 1.0 1.3 μm, respectively. Benefiting from this sensitive response, Q-switching...
Abstract In this work, a high thermoelectric figure of merit, zT 1.9 at 740 K is achieved in Ge 1−x Bi x Te crystals through the concurrent Seebeck coefficient enhancement and thermal conductivity reduction with dopants. The substitution for not only compensates superfluous hole carriers pristine GeTe but also shifts Fermi level ( E F ) to an eligible region. Experimentally, moderate 6–10% dopants, carrier concentration drastically decreased from 8.7 × 10 20 cm −3 3–5 boosted three times 75...
We evaluate the scintillator properties of LYSO (Lu/sub (2-x)/Y/sub x/SiO/sub 5/:Ce) crystals with amount lutetium ranging from 15 to 100%. The radii cations Lu/sup 3+/ and Y/sup differ by only 5%, therefore, one can substitute yttrium for without changing structure. addition has several advantages: raw material Y/sub 2/O/sub 3/ is much cheaper than Lu/sub melting point up 100/spl deg/C less. Since a lower atomic number mass lutetium, have density effective number. This means that does not...
Measurements, experiments and extracted parameters of the material constants langatate (LGT), langanite (LGN), langasite (LGS) versus temperature are presented from work conducted at University Central Florida. The data is grown by Crystal Photonics,, Inc. part a contract on growth, characterization device implementation these materials. Parameters include expansion mass density coefficients, stiffness constants, dielectric constants. A paper in this proceedings R. Smythe, et. al., presents...
Abstract The photocurrent was performed in the Sb 2 SeTe topological insulator at a wavelength of 532 nm. It exhibits extremely high performance that responsivity and photoconductive gain reach 2293 AW −1 5344 1 V. This photoresponse is orders magnitude higher than most reported values insulators two-dimensional transitional metal dichalcogenides. finding suggests nanoflake has great potential for future optoelectronic device applications.
The heterogeneous nature of trimetallic catalyst systems comes with beneficial synergy for catalytic applications. Nonetheless, the challenges associated to validate and control critical characteristics enhanced electrocatalytic efficiencies are yet be known. Herein, a genre catalysts were synthesized Ni, Co, Mo metals, whose morphological, structural, electronic, interface properties depend on Ni/Co Mo+4/Mo+5 ratios dominant element surface catalyst. results suggest that introduction third...
We report the magnetic, magnetodielectric, and electric polarization properties of single crystals Co-based Kitaev Spin Liquid (KSL) candidate Na$_2$Co$_2$TeO$_6$ (NCTO). The sample shows magnetic transitions at 26 K, 16 5 consistent with literature. measurements along perpendicular to Co-honeycomb planes show a strong anisotropy in susceptibility Curie-Weiss (C-W) temperatures. experimental anisotropic C-W temperatures NCTO qualitatively match theoretical temperatures, calculated using HKTF...
Abstract The nano‐scaled defect generations and mechanics for the hexagonal 4H SiC semiconducting single crystals are examined systematically by using nanoindentation tests on {0001} basal plane. dislocation defects induced outside accidental applied load or internal residual stress thermal cycling during fabrication prolonged usage would impose a significant influence semiconductor performance. To more closely examine indent tip concentration effects, we adopted three tips with different...
Tin-based perovskites, characterized by their advantageous bandgap and much lower toxicity, have emerged as a promising alternative to lead-based perovskites in solar cell applications. However, the efficiency stability of tin-based perovskite cells (Sn-PSCs) are still limited defects resulting from easy oxidation Sn2+ Sn4+. Herein, an approach enhance optoelectronic performance Sn-PSCs incorporating terpyridine-zinc(II) (ZnTPY) coordination nanosheets (CONASHs), synthesized via...
We report homoepitaxial GaN growth on freestanding (11̄00) oriented (M-plane GaN) substrates using low-pressure metalorganic chemical vapor deposition. Scanning electron microscopy, atomic-force and photoluminescence were used to study the influence of conditions such as V/III molar ratio temperature surface morphology optical properties epilayers. Optimized led high quality epilayers with a smooth strong band-edge emission. These layers also exhibited room stimulated emission under...