Journal of Applied Physics
Articles in this Issue
Ultrafast temperature diagnosis of dynamically compressed matter using millielectronvolt inelastic x-ray scattering beyond the first Brillouin zone
We present calculations of the millielectronvolt-scale x-ray scattering spectra of multilayered dynamic-compression targets comprising an unstructured ablator layer and a crystalline, textured sample...
Modeling terahertz propagation via frequency-domain physics-informed neural networks
Terahertz time-domain spectroscopy (THz-TDS) provides a non-invasive and label-free method for probing the internal structure and electromagnetic response of materials. Numerical simulation of THz-TDS...
Melting of Fe3C under laser-shock compression to 300 GPa
We directly measure melting of shock compressed Fe3C to 300 GPa using in situ x-ray diffraction. We find melting begins at a shock stress state near 150 GPa and is fully liquid by 190(10) GPa. We find...
Effect of nucleation layer growth conditions on the defect structure in MOVPE-grown cubic GaN epitaxial layers
A possible approach to achieve higher efficiencies and faster switching speeds in green-to-red LEDs for visible light communication is the application of GaN grown in the zincblende phase. However, zi...
Descriptor-driven UMAP (D-UMAP) for visualizing and analyzing structural evolution in SiC nano-grinding
This study introduces a descriptor-driven uniform manifold approximation and projection (D-UMAP) framework to visualize and analyze the complex structural evolution in SiC nano-grinding. Various atomi...
Magnetic correlation length in hard/soft core–shell magnetic nanoarchitectures
The magnetic behavior of the hard/soft CoFe2O4@NiFe2O4 system is discussed within the framework of two established models for magnetic nanoparticle ensembles, the Langevin model and the Random Anisotr...
Schottky barrier height modulation in W-based contacts on AlGaN/GaN heterostructures
In this paper, tungsten-based Schottky diodes on AlGaN/GaN heterostructures were fabricated employing reactive sputtering, enabling a controlled modulation of the Schottky barrier height (ΦB). By vary...
Ternary BiSeBr for polarization-sensitive infrared photodetector
Infrared optoelectronic detectors are essential in a variety of applications. This research focuses on investigating the phonon vibrations and optoelectronic properties of BiSeBr, as well as the devel...
Mathematical expressions of germanium conduction band: Solved using anti-bond orbital model
The formation of α( = s, x, y, z)-like anti-bond orbitals (ABOs) is explained in detail: from atomic orbitals, sp3 tetragonal hybrid orbitals, sp3 tetragonal antibonding orbitals, and finally α-like A...
Impact of Zn penetration on the tensile deformation behavior of Fe symmetric tilt grain boundaries
Zn-induced liquid metal embrittlement (LME) hinders the widespread application of galvanized advanced high-strength steels (AHSS) in the automotive industry. This phenomenon originates from the penetr...
Canonical structure of the LLG equation for exponential updates in micromagnetism
In this contribution, we propose an exponential update algorithm for magnetic moments appearing in the framework of micromagnetics and the Landau–Lifshitz–Gilbert (LLG) equation. This algorithm can be...
An impedance-decoupled tube-bundle metamaterial with porous lining for deep-subwavelength broadband low-frequency absorption
This paper proposes a novel embedded tube-bundle panel with porous lining acoustic metamaterial for high-efficiency broadband sound absorption in the sub-500 Hz regime at deep-subwavelength scales. A...
Design of ultra-thin broadband sound-absorbing metamaterials based on Helmholtz resonators
Achieving efficient low-frequency sound absorption within limited thickness remains a persistent challenge in acoustic engineering. In this work, an ultra-thin broadband absorber is developed by explo...
Si-implanted ohmic contacts with modulated pulse activation annealing for down-scaled RF GaN HEMTs
A modulated pulse annealing method combined with an Al2O3/SiNx annealing cap is utilized for activating implanted Si in n+ ohmic contacts for AlGaN/GaN HEMTs. The objective is to prevent GaN decomposi...
A Tutorial on Bayesian analysis of linear shock compression data
Gas gun and other shock compression experiments often produce shock wave velocity measurements that are linearly associated with particle velocity. Traditionally, this empirical relationship is quanti...
Robust <i>in situ</i> calibration of broadband terahertz time-domain polarimetry systems using a leaky wire grid polarizer
Polarization-sensitive measurements provide rich information about material properties and enable a wide range of applications. Accurate calibration of polarimetry and ellipsometry systems is especial...
Modeling and experimental study of low flow rate miniaturized electrodialysis for artificial kidney applications
In this study, the application of electrodialysis for ion recovery as an active transport mechanism is evaluated where a low flow rate of de-ionized water containing 100 mM NaCl concentration, close t...
First-principles dopant screening to suppress shallow traps in HfO2 charge-trap layers for 3D <scp>nand</scp> flash memory
As three-dimensional (3D) nand flash memory continues to scale toward higher integration, lateral and vertical thinning of the Si3N4 charge-trap layer (CTL) leads to memory window narrowing and accele...
Orientation-dependent atomic diffusion and interfacial evolution in Au–Si eutectic bonding: A molecular dynamics study
This work systematically investigates the interfacial structure evolution, atomic diffusion behavior, strain distribution, and defect formation mechanisms of Au–Si bonding systems with different cryst...
Atomic mechanism for elastic–plastic behaviors of uranium-6 wt. % niobium single crystal alloy under shock compressions
The absence of an elastic precursor (EP) in shock-loaded U-6 wt. % Nb alloys has long been attributed to the rapid shear stress relaxation due to phase transformation or twinning. As a first step towa...
Mechanical metamaterials
Mechanical metamaterials derive their extraordinary effective properties primarily from architecture rather than from constituent chemistry. This Special Topic in Journal of Applied Physics assembles...
Double-front plasma produced from high-intensity nanosecond laser ablation of aluminum: Time-resolved imaging and hydrodynamic modeling
An interesting phenomenon of dual fronts was observed experimentally for plasma produced through high-intensity nanosecond (ns) laser ablation of aluminum in a gas environment with a small laser spot,...