Applied Physics Letters
Articles in this Issue
Thermally stable GaN RF HEMTs on proton irradiated GaN substrates for low-noise applications
In this study, proton irradiation is employed to fabricate semi-insulating GaN free-standing wafers with a sheet resistance of 5.9 × 107 Ω/sq. The mechanism for achieving semi-insulating GaN via proto...
Rice straw-derived 3D porous carbon-based electrochemical immunosensor for ultrasensitive detection of alpha-fetoprotein
To detect the core tumor marker of alpha-fetoprotein (AFP) for the early diagnosis and prognostic evaluation, N/O co-doped 3D porous carbons (SDNOC3D PCs) were synthesized using rice straw as the gree...
Kinetic study of <b> <i>κ</i> </b> ( <b> <i>ε</i> </b> ) to <b> <i>β</i> </b> phase transformation in Ga2O3 thin films via <i>in situ</i> high-temperature XRD
The kinetics of the κ(ε) to β-Ga2O3 phase transformation were investigated in five batches of nominally phase-pure κ(ε)-Ga2O3 thin films heteroepitaxially grown on c-plane sapphire, with film thicknes...
Electronic structure and fast neutron direct-conversion detection in organic–inorganic hybrid perovskites
Traditional semiconductor neutron detectors improve neutron detection efficiency by covering organic materials as the neutron conversion layer. However, the injection efficiency of the recoil proton i...
Analog-to-digital converter based on spin–orbit torque magnetic tunnel junctions
Analog-to-digital converters (ADCs) serve as a crucial interface between the physical and digital worlds, playing an essential role across a wide range of applications. However, achieving an ADC that...
<i>C</i> -axis textured M-type hexaferrite with tailored magnetic properties and narrow FMR linewidth for Ka-band self-biased circulator applications
C-axis textured BaZn0.3Ti0.3Fe11.4O19 M-type hexaferrite was synthesized by solid-state reaction under magnetic field alignment, and its crystallographic site occupation, static and dynamic magnetic p...
Enhancing the electrical insulation performance of epoxy resin composites via <i>in situ</i> grafted Cu2S nanoparticles
With the continuous increase in voltage levels of high-voltage direct current (HVDC) transmission, the requirements for the insulation properties of epoxy resin insulating materials have become increa...
Intrinsic layer Hall effect with half-quantization in PT-broken magnetic topological insulators
The layer Hall effect (LHE) in antiferromagnetic topological systems originates from layer-locked Berry curvature, which gives rise to opposite Hall responses associated on different layers. Experimen...
Cyclotron mass-selective de Haas–van Alphen measurements using temperature modulation
We present a temperature-modulated de Haas–van Alphen measurement technique that allows selective addressing of quantum oscillations with different effective masses m∗ using a non-monotonic amplitude...
Subpixel-registered dual-mode imaging enables label-free inference of mitochondria in living cells
Fluorescence microscopy remains indispensable for specific organelle imaging but suffers from photobleaching and phototoxicity. Here, we introduce a strong physics-constrained deep learning strategy t...
Excitation and imaging of GHz surface acoustic waves in Al1−xScxN grown on SiC by molecular-beam epitaxy
Scandium incorporation significantly boosts the piezoelectric properties of wurtzite AlN thin films. Synthesis of wurtzite Al1−xScxN thin films on SiC, although underexplored, can lead to benefits in...
Spin-selective nonlinear imaging in real and Fourier space via chiral metasurfaces
Nonlinear chiral metasurfaces represent a compelling platform for spin-selective light–matter interactions and multidimensional optical information processing. However, existing designs are typically...
High-capacity data transmission with 24-bit orbital angular momentum multiplexing under dynamic scattering media
When orbital angular momentum (OAM) beams pass through scattering media, mode coupling and interference occur, distorting the phase front and converting the beam into a random speckle pattern, so high...
Hidden polymorphic landscape in two-dimensional ZnO
Two-dimensional ZnO has long been described by a graphitic honeycomb model, yet growing experimental evidence suggests a more complex structural landscape. Here, we use physics-constrained random stru...
Erratum: “An electrothermally actuated high-power MOEMS optical switch with a state-latching mechanism” [Appl. Phys. Lett. <b>128</b> , 173303 (2026)]
Cross-state prediction of dynamic ferroelectric catalysis: Efficient screening for bypassing the Sabatier limit
Ferroelectric (FE) switching offers a pathway to bypass the Sabatier limit by toggling binding states, yet the computational cost for screening such dynamic materials remains prohibitive. Here, we pre...
Experimental evidence of resonant tunneling transport in GaN-based terahertz quantum cascade heterostructures
We report the first experimental evidence of resonant tunneling transport in GaN-based terahertz (THz) quantum cascade (QCL) heterostructures. A GaN/AlGaN resonant-phonon three–quantum-well design was...
UV-ozone-induced quasi-tunnel layer for charge-trapping synaptic transistors and its application in neuromorphic computing
Charge-trapping thin-film transistor (CT-TFT) is a reliable structure for fabricating neuromorphic devices, owing to its non-volatile memory characteristics. However, the performance of charge-trappin...
Dislocation dynamics in noble-metal high-entropy alloys under nanoindentation: Neuroevolution potential insights
Neuroevolution-potential molecular-dynamics simulations reveal that stacking-fault-energy (SFE) governs nanoindentation plasticity in the noble alloys, AuPdAg and AuPdAgPt. The addition of platinum in...
Theoretical roadmap for suppressing electrically induced spin decoherence in silicon T centers via dynamical decoupling
Silicon T centers are highly promising for scalable quantum networks, yet the critical transition from optical pumping to practical electrical injection introduces severe decoherence challenges. Speci...
Multistate control in 2D CuCrP2S6/Sc2CO2 multiferroic heterostructures
The magnetoelectric (ME) coupling effect enables effective cross-control between electric and magnetic fields, providing a crucial pathway toward next-generation low-power electronic devices. Here, we...
Stochastic spiking in magnetic droplet solitons
The nonlinear dynamics of droplet solitons make them highly promising candidates for brain-inspired computing, including neuromorphic systems, deep physical neural networks, physical spiking neural ne...
Electrical signatures of nitrogen Frenkel pairs in GaN
Deep level transient spectroscopy (DLTS) has been applied to electron-irradiated GaN grown homoepitaxially on highly conductive ammono-GaN substrates. Electron beam energies of 350 and 370 keV were em...
Ultrahigh spatial resolution imaging of radiative optical states of single gold nanoantennas by scanning tunneling microscope-induced light emission
Modern nanophotonics allows one to engineer the optical modes and localize light at the nanoscale. In this work, we visualize the local density of optical states (LDOS) distribution of the single femt...
Single-atom sensor for low-frequency electric field
Precision measurement of low-frequency electric field (LFEF) signals with frequency from 30 to 300 kHz is crucial for advancing both fundamental science and practical applications owing to their uniqu...