A5082988940- Advanced Condensed Matter Physics
- Surface and Thin Film Phenomena
- Topological Materials and Phenomena
- Graphene research and applications
- Ammonia Synthesis and Nitrogen Reduction
- Random lasers and scattering media
- ZnO doping and properties
- Quantum, superfluid, helium dynamics
- Copper Interconnects and Reliability
- Optical Polarization and Ellipsometry
- Advanced Photocatalysis Techniques
- Magnetic Properties and Synthesis of Ferrites
- Iron oxide chemistry and applications
- Block Copolymer Self-Assembly
- Neonatal and fetal brain pathology
- Surface Roughness and Optical Measurements
- Inorganic Chemistry and Materials
- Magnetic properties of thin films
- Tryptophan and brain disorders
- Nanomaterials and Printing Technologies
- Neuroscience and Neuropharmacology Research
- Surface Modification and Superhydrophobicity
- Advanced Chemical Physics Studies
- Machine Learning in Healthcare
- Rare-earth and actinide compounds
Mississippi State University
2020-2025
Harvard University
2024
Massachusetts General Hospital
2024
Korea University
2024
Institute of Technology of Cambodia
2024
Institute for Basic Science
2024
University of Ulsan
2024
Pusan National University
2024
St Xavier’s College
2018
Abstract Interstitial quasi‐atomic electrons (IQEs) in the quantized energy levels of positively charged cavities possess a substantial own magnetic moment and control magnetism crystalline electrides depending on interaction with surrounding cations. However, weak spin‐orbit coupling gentle exchange restricted by IQEs preclude large anisotropic, remaining challenge for hard magnetism. It is reported that 2D [ Re 2 C] 2+ ·2e − (Re = Er, Ho, Dy, Tb) show permanent ferrimagnetic ground state,...
Despite numerous efforts involving surface coating, doping, and alloying, maintaining stability of metal at high temperatures without compromising intrinsic properties has remained challenging. Here, we present a pragmatic method to address the accelerated oxidation Cu, Ni, Fe exceeding 200 °C. Inspired by concept that oxygen (O) itself can effectively obstruct pathway O infiltration, this study proposes immobilization on surface. Through extensive calculations considering various elements...
Electrides, which are ionic crystals composed of excess anionic electrons, great interest as an exotic material for fundamental research and practical applications in broad fields science technology. However, inherent chemical instability under ambient conditions at room temperature has been a fatal drawback to be addressed. Here, we report that transition metal-rich monochalcogenides emerging class low-dimensional electrides with excellent thermal stability air water through comprehensive...
Here, we present the Fermi surface properties of kagome superconductor ${\mathrm{KV}}_{3}{\mathrm{Sb}}_{5}$ using torque magnetometry at applied fields up to 45 T and temperatures down that liquid $^{3}\mathrm{He}$ (0.32 K). The signal shows clear de Haas--van Alphen (dHvA) oscillations with 14 major frequencies ranging from $\ensuremath{\sim}33$ 2149 T, nine which are higher (above 500 T) have never been reported in ${\mathrm{KV}}_{3}{\mathrm{Sb}}_{5}$. Angular dependence measurements dHvA...
Abstract In 2D noble metals like copper, the carrier scattering at grain boundaries has obscured intrinsic nature of electronic transport. However, it is demonstrated that transport by hole carriers in copper can be revealed growing thin films without boundaries. As even a slight deviation from twin boundary perceived as electrons, only through thorough elimination hidden hole‐like attribute single‐crystal unmasked. Two types Fermi surfaces, large hexagonal surface centered zone center and...
This work presents electronic properties of the kagome metal ${\mathrm{ScV}}_{6}{\mathrm{Sn}}_{6}$ using de Haas--van Alphen (dHvA) oscillations and density-functional theory (DFT) calculations. The torque signal with applied fields up to 43 T shows clear dHvA six major frequencies, five them are below 400 (low frequencies) one is nearly 2800 (high frequency). Berry phase calculated Landau level fan diagram near quantum limit approximately $\ensuremath{\pi}$, which suggests nontrivial band...
We observed the interplanetary datasets, polar cap potential (PCV), three different types of High Intensity Long Duration Continuous AE Activities (HILDCAAs) and index (PCI) during geomagnetically quiet period.On each event, we examine electric field (), westward auroral electrojet (AL) indices.We found little perturbations in but significant HILDCAAs.In particular, non-storm HILDCAA showed more compared to other two HILDCAAs.Due sporadic energy pumping into magnetosphere, was perturbed even...
We report the recently partial wave spectroscopy (PWS) with finner focusing that can probe precise scattering volume in tissues. Applications distinguishing nanostructural alteration brain tissues chronic alcoholism are reported.
Abstract Despite numerous efforts involving surface coating, doping, and alloying, maintaining stability at high temperatures without compromising intrinsic properties has remained challenging. Here we present a groundbreaking method to address the accelerated oxidation of metals like Cu, Ni, Fe exceeding 200 °C. Inspired by concept that oxygen (O) itself could effectively obstruct pathway O infiltration, study achieved significant breakthrough immobilizing blocking O. Through extensive...
Abstract The quantum state of matter, a platform profound physics, is coherent under extreme conditions, such as ultralow temperature and two-dimensional confinement. Herein, in contrast to conventional views, the Cu(111) grain boundary (GB)-free films show states greater than 400 μm at room (RT). We directly observe hundred-micrometre-scale coherence interference across four dimensions over time, frequency, space. This RT macroscopic nature observed via tip-assisted terahertz spectroscopy,...
<title>Abstract</title> <bold>Two-dimensional (2D) materials have served as key platforms for exploring novel phenomena and innovative applications, driven by their reduced dimensionality. The existing library of 2D includes carbon-based transition metal-based systems. However, oxygen-based are missing. Oxygen, the most abundant element on Earth with a higher electronegativity than carbon, holds potential to introduce unprecedented functionalities in materials. Here we report experimental...
Optical scattering strength of fractal optical disordered media with varying dimension is reported. The diffusion limited aggregation (DLA) technique used to generate samples in 2D and 3D, dimensions are calculated using the box-counting method. degree structural disorder these their light localization strength, via inverse participation ratio (IPR) analyses eigenfunctions. Results show non-monotonous behavior disorder-induced dimension, attributed competition between increasing due decrease...
This work presents electronic properties of the kagome metal ScV6Sn6 using de Haas-van Alphen (dHvA) oscillations and density functional theory (DFT) calculations. The torque signal with applied fields up to 43 T shows clear dHvA six major frequencies, five them are below 400 (low frequencies) one is nearly 2800 (high frequency). Berry phase calculated Landau level fan diagram near quantum limit approximately {\pi}, which suggests non-trivial band topology in ScV6Sn6. To explain experimental...
The persistent battle to decrease childhood mortality serves as a commonly employed benchmark for gauging advancements in the field of medicine. Globally, under-5 rate stands at approximately 5 million, with significant portion these deaths being avoidable. Given significance this problem, Machine learning-based techniques have emerged prominent tool assessing fetal health. In work, we analyzed classification performance various machine learning models health analysis. Classification models,...
To investigate the structural and magnetic properties of Cr-doped M-type strontium hexaferrite (SrFe$_{12}$O$_{19}$) with x = (0.0, 0.5, 1.0), we perform first-principles total-energy calculations relied on density functional theory. Based calculation substitution energy Cr in formation probability analysis, conclude that doped atoms prefer to occupy 2a, 12k, 4f$_{2}$ sites which is good agreement experimental findings. Due Cr$^{3+}$ ion moment, 3 {$\mu_B$}, smaller than Fe$^{3+}$ ion, 5...
Abstract The intrinsic nature of electronic transport has been screened by the carrier scattering at grain boundaries in two-dimensional noble metals, such as copper. Here, realizing impossible assumption growing without thin films, we demonstrate that hole carriers 2D copper is nature, which boundaries. Unlike boundaries, twin are invisible to conduction carriers, but even a slight tilt from regular recognized electrons, so only complete suppression can reveal hidden hole-like...