Journal of Applied Physics
Articles in this Issue
An immersed interface Adaptive Mesh Refinement algorithm for Li-ion battery simulations. I. Development of a fast P2D solver
We present a Cartesian immersed interface solver for the P2D model that integrates seamlessly with hierarchical Adaptive Mesh Refinement (AMR), providing marked improvements in computational efficienc...
Quasi-localized vibrations arise from liquid-like structures in glasses: Insights from deep neural networks
Glasses possess material properties that differ significantly from those of crystals. These properties are closely linked to quasi-localized vibrations (QLVs) present in glasses, thus understanding th...
Probing the arsenic distribution and dopant activation in poly-crystalline CdTe1−xSex solar cell absorbers
We examine the arsenic distribution and its influence on dopant activation in poly-crystalline CdTe1−xSex solar cell absorbers prepared by vapor transport deposition followed by CdCl2 annealing. For a...
Heliometric stereo: A new frontier in surface profilometry
Accurate and reliable measurements of three-dimensional surface structures are important for a broad range of technological and research applications, including materials science, nanotechnology, and...
An immersed interface Adaptive Mesh Refinement algorithm for Li-ion battery simulations. II. Multi-dimensional extension and separator modeling
We present a parallelizable, Adaptive Mesh Refinement (AMR)-compatible solver for computing solutions to multi-dimensional battery models, with added capability to resolve the complex geometries of ba...
Efficiency enhancement in regenerative amplifier free-electron lasers using a tapered undulator
Recent progress in short-wavelength free-electron lasers (FELs) from the extreme ultraviolet through x rays has opened new avenues for industrial and research applications. Most such FELs rely on self...
Strain dependence of the Bloch domain component in 180° domains in bulk PbTiO3 from first-principles
We investigate the emergence of Bloch-type polarization components in 180° ferroelectric domain walls in bulk PbTiO3 under varying mechanical boundary conditions, using first-principles simulations ba...
Impact of droplets on spherical surfaces with different wettability at the nanoscale: A molecular dynamics study
Spherical surfaces that can manipulate impacting droplets are of great importance to a wide range of practical applications, such as lab on a chip and digital microfluidics. In this work, we utilize s...
Bridging machine learning and glassy dynamics theory for predictive polymer modeling
Understanding and predicting the glassy dynamics of polymers remain fundamental challenges in soft matter physics. While the elastically collective nonlinear Langevin equation theory has been successf...
Triple evaporation growth and photoemission characterization of bialkali antimonide photocathodes
The development of high-performance photocathodes is essential for generating high-brightness electron beams required by existing and future accelerators. This work introduces a state-of-the-art tripl...
A modified model for thermodynamics of localized-state luminescence in disordered materials
Carrier localization in semiconductor materials often arises from band fluctuations, causing energy minima that trap carriers. The anomalous luminescence behaviors of localized states in such material...
Excitonic effects on the optical spectra and the electron energy loss spectra of Mg2C using linear response theory
The optical and electron energy loss spectra of Mg2C are studied in the framework of time-dependent density functional theory. On top of the ground state of the antifluorite crystal constructed using...
Topological characterization of Hopfions in finite-element micromagnetics
Topological magnetic structures, such as Hopfions, are central to three-dimensional magnetism, but their characterization in complex geometries remains challenging. We introduce a robust finite-elemen...
Effect of plasma-surface heat transfer on enhancement of laser ablation in the presence of magnetic field
We report on the numerical and experimental studies on the magnetic field-assisted laser ablation of copper by second harmonic nanosecond laser pulses. In particular, we concentrated on the depth of a...
DNA-directed assembly of graphene homostructures
We present a DNA-directed strategy for the programmable assembly of graphene homostructures, enabled by covalent DNA functionalization of azidated graphene nanosheets. Azidated graphene was synthesize...
Hybrid method for estimating peak channel temperature in AlGaN/GaN HEMTs using resistance thermal detector thermometry and a simplified analytical model
In this work, we introduce an analytical approach for accurately determining the peak channel temperature (Tpeak,ana) of AlGaN/GaN high electron mobility transistors from experimental measurements. A...
Phonon–plasmon coupled modes in GaN vertical power structures: Carrier concentration and mobility analysis
Confocal Raman microscopy is proposed as a non-invasive method for determining carrier density and mobility in GaN structures used in vertical power devices. The electronic properties of two GaN epila...
A round bobbin critical current measurement and thermal runaway simulation of <i>RE</i>BCO coated conductors
A round bobbin test has been widely used to measure critical current Ic of practical superconductors including Nb–Ti, Nb3Sn, and Bi-2212 round strands at 4.2 K and in high magnetic fields but rarely u...
Tailoring optical properties of pulsed laser deposition grown epitaxial SrTiO3 thin films by tantalum doping
The tunability of both optical bandgap and refractive index of the films is crucial for designing the next generation light emitting devices, lasers, power electronics, and transparent electronics. Th...
Theory of polarization-dependent phonon pumping in ferromagnetic/non-magnetic bilayers
We develop a theoretical model for polarization-selective phonon pumping induced by magnon–phonon coupling in a ferromagnetic/non-magnetic acoustic bilayer structure, focusing on the effects arising f...
Elastic constants in monocrystalline tungsten under quasi-hydrostatic pressures to 11.3 GPa
Compressional (P) and shear (S) wave velocities of tungsten single crystals along the [100] and [110] directions were measured using ultrasonic interferometry at room temperature up to 11.3 GPa. Least...
Evaluation of thermal expansion of elastomer using self-mixing vibrometry with thin-slice solid laser
We describe an easy, non-destructive, and non-contact method for observing deformation of thermally degraded rubber by using the self-mixing laser Doppler velocimetry method. In this method, a laser l...
Role of dipole engineering in in-plane phonon thermal transport of BlueP/MXY (M = Mo, W; X/Y = S, Se) van der Waals heterostructures
Dipole engineering serves as a crucial non-destructive approach for modulating the electronic properties and interfacial coupling in two-dimensional layered materials and heterostructures. Here, the m...
Disorder driven magnetostructural coupling in MnCoGe1− <i>x</i> Sn <i>x</i>
MnCoGe-based intermetallics have garnered significant attention owing to their pronounced negative thermal expansion and large magnetocaloric effect (MCE), both of which are highly sensitive to chemic...
<i>Ab initio</i> high-throughput search methodology for next-generation power semiconductors candidates
Since power semiconductor devices play crucial roles in electrical energy conversion and control, power semiconductor materials with more efficient and reliable power transmission and distribution are...