Applied Physics Letters
Articles in this Issue
Advanced monolithic 2D multilayer Laue lens (MLL) optics for hard x-ray nanofocusing and nanotomography
We report on the development of a new generation of monolithic two-dimensional (2D) multilayer Laue lens (MLL) optics suitable for high-resolution hard x-ray nanoimaging. The 2D optics were assembled...
Giant superlinear and high-temperature stable ultraviolet photodetectors based on a single SiC/amorphous BN nanowire
High illumination power and high temperature can severely impact the photoresponse performance and operational stability of SiC nanowire-based UV photodetectors (PDs) due to the increased carrier reco...
Foaming-induced structural engineering of graphite arrays for high-density thermal pathways in thermal interface materials
The escalating power density of electronics demands advanced thermal interface materials (TIMs). While graphite array-based TIMs (GRTs) have attracted considerable interest, achieving their theoretica...
Monolayer WSe2 films synthesized by confined-space chemical vapor deposition
Tungsten diselenide (WSe2) is an important p-type two-dimensional (2D) semiconductor. However, a route to synthesize its monolayer films that simultaneously exhibit spatial uniformity, high crystallin...
Single-photon detector based on absorption in waveguide quantum electrodynamics
Single-photon detection plays important roles in implementing desired quantum information processing. In this work, we propose a single itinerant photon detector based on absorption by two interacting...
Experimental evidence of strong intrinsic defect-induced phonon scattering in 2D non-layered β-In2S3
β-In2S3, as a typical two-dimensional (2D) non-layered material, has recently attracted growing attention for exploring novel physical properties beyond van der Waals layered materials. Here, we measu...
Haptic light-emitting diodes: Miniature, luminous tactile actuators
We present haptic light-emitting diodes (HLEDs), luminous thermopneumatic actuators that directly convert pulsed light into mechanical forces and displacements. Each device packages a miniature surfac...
A molecular selenium iodide cathode and hybrid electrolyte for solid-state Na–Se2I2 batteries
Challenges such as polyselenide shuttling and poor reaction kinetics persist in sodium–selenium (Na–Se) batteries. While solid-state Na–Se batteries could potentially eliminate the shuttle effect, the...
Ultrahigh charge-to-spin conversion and tunneling magnetoresistance in quasi-two-dimensional <i>d</i> -wave altermagnet
The emergence of altermagnets has driven groundbreaking advances in spintronics. Notably, d-wave altermagnets support non-relativistic spin transport, efficient charge-to-spin conversion, and T-odd sp...
Effective modulation of emission dynamics in Er:CaF2 crystal via oxygen anion engineering
In Er3+-doped CaF2 crystals, strong upconversion processes promote higher-lying emissions while limiting the population of the 4I13/2 level, undermining its 1.5 μm laser potential. In this work, we de...
Control of ultrafast excitonic shift current-induced THz emission efficiency of layered single-crystalline MoS2
Following ultrafast photoexcitation, a semiconductor exhibits competing dynamics among photocarriers, many-body transient states of highly energetic excitons, and electron–hole liquid (EHL). Here, we...
High-fidelity ghost imaging using untrained physics-driven dual-network framework at ultra-low sampling rates
Ghost imaging (GI) is a typical computational imaging technique that reconstructs two-dimensional and three-dimensional images from one-dimensional bucket detector signals under structured light illum...
Structural uniformity and grain formation in inch-scale few-layer YBa2Cu3O7 <b>−</b> <i>x</i> epitaxial films on MgO
Here, we report a systematic study of structural uniformity and grain formation in the initial layers of epitaxial YBa2Cu3O7−x (YBCO) films grown on MgO substrates by pulsed laser deposition. On a 2-i...
Non-pinched hysteresis in CrO <i>x</i> /TiO <i>y</i> -based memristive devices: Modeling and analysis
Transition-metal oxide memristors are promising for neuromorphic computing, yet most SPICE models overlook material-specific effects such as oxygen stoichiometry and non-pinched hysteresis. Here, we s...
Stabilizing direct laser acceleration with long-scale-length plasma targets
We investigate the influence of plasma scale length on electron beam stability in direct laser acceleration (DLA) using a series of experiments on multiple laser systems with peak power spanning from...
A light-switchable polarity retina-inspired phototransistor for adaptive photo-sensing
The limited dynamic range and fixed response polarity of conventional photodetectors pose significant challenges for machine vision in real-world, rapidly changing illumination, leading to either blin...
Viscoplastic flow in intersecting fractures
Understanding viscoplastic fluid flow in discrete fracture networks is essential for natural and industrial processes, yet the hydraulic resistance at fracture intersections remains poorly characteriz...
High energy storage in tetragonal tungsten bronze ceramics engineered via superparaelectric state
Dielectric energy storage ceramics are critical components in advanced pulsed-power systems. Recently, ceramics with tetragonal tungsten bronze (TTB) structure have gained considerable interest owing...
Orientation-engineered Bi0.5Sb1.5Te3 films with enhanced mobility for high-performance thermoelectric and photothermoelectric energy conversion
Bi2Te3-based thermoelectric films remain leading candidates for near-room-temperature power generation and cooling, yet further enhancement of their performance is required for practical applications....
Higher-order Weyl semimetals on nonorientable manifolds
Higher-order Weyl semimetals (HOWSMs), characterized by the coexistence of two-dimensional Fermi arc surface states and one-dimensional topological hinge states, establish the fundamental connection b...
Performance improvement of NiO/β-Ga2O3 heterojunction diodes using ultrathin amorphous BN interfacial layer
In this work, a NiO/β-Ga2O3 heterojunction diode with an ultrathin (∼2 nm) amorphous boron nitride (a-BN) interfacial layer (IL) is presented. The NiO/a-BN/β-Ga2O3 heterojunction diode exhibited a low...
ZIF-67-preloaded bacterial cellulose aerogel with strong Lewis acid–base interactions fabricating homogeneous solid composite electrolyte for lithium metal batteries
Low ionic conductivity of solid electrolyte and unstable Li/solid electrolyte interface greatly restrict the development of solid-state lithium metal batteries (LMBs). In this study, a novel design st...
Multifunctional Janus TiSBr monolayer: Strain-tuned synergy of ferrovalley, quantum anomalous Hall, and anomalous Nernst effects
Two-dimensional ferrovalley materials that simultaneously exhibit large valley polarization and high Curie temperature (Tc) are essential for advancing valleytronic devices. In this work, we propose a...
Twist-controlled phonons and symmetry breaking in asymmetric moiré van der Waals heterostructures
Twistronics in van der Waals heterostructures enables programmable electronic, vibrational, and nonlinear optical responses through moiré superlattices, but most platforms are assembled from high-symm...
Epitaxial growth of topological insulator <b> <i>β</i> </b> -Ag2Te thin films
We report epitaxial growth of β-Ag2Te thin films by molecular beam epitaxy. β-Ag2Te, recently identified as a topological insulator, was grown by depositing Ag on an InP substrate at room temperature,...