Applied Physics Letters
Articles in this Issue
Scalable selective-area diamond growth for thermal management applications
Selective-area growth of diamond is highly desirable for integrated electronics and thermal management, yet scalable patterning with controlled microstructure remains challenging. Here, we report a nu...
Geometry-defined tensile deformation sensing via electromagnetic phase delay in a liquid-metal conduit
Reliable measurement of tensile deformation in soft and stretchable systems is challenging because elongation in practical settings is rarely isolated and is commonly accompanied by localized bending,...
High-performance ZnTe/Bi2O2Se heterostructure photodetector for optical imaging applications
Two-dimensional (2D) material heterostructure technology has been widely applied in numerous photodetectors due to its efficient light–matter interaction and versatile device construction. However, le...
Celebrating the 2025 <i>Applied Physics Letters</i> Rising Stars Collection and Rising Star Award
High-speed intracellular magnetic tweezers with digital PID controller
Magnetic tweezers, a micromanipulation method that can apply and measure physical forces of a broad range of amplitudes without direct contact, are practical for studying the mechanical properties of...
Exchange bias effect in thin Fe3GeTe2 and Fe5GeTe2 flakes sensitive to oxidation and annealing methods
The exchange bias (EB) effect—an asymmetric shift in the ferromagnetic (FM) hysteresis loop arising from the coupling between bulk FM and surface antiferromagnetic (AFM) spin alignments in FM material...
Ghost diffraction–interference fringes of bosons via ghost imaging
The time domain is a one-dimensional space, and hence the diffraction–interference in three dimensions is absent. However, ghost diffraction–interference (GD) building on a two-particle-enabled Young'...
Electrically injected InGaN/GaN micro-light emitting diodes: Size-dependent diode characteristics and recombination dynamics
This work demonstrates InGaN/GaN multiple quantum well micro-light emitting diodes (μLEDs) grown on c-plane sapphire substrates via metalorganic chemical vapor deposition, focusing on size-dependent e...
Temperature-dependent bandgap renormalization in ZnO ceramics sintered using concentrated solar energy
The solar furnace enables the rapid sintering of ceramics, but the underlying mechanisms affecting optical absorption at elevated temperatures remain to be investigated. This study investigates the te...
Efficient adaptation of physics-informed neural networks for parametric thermal convection using adapter layers
We study parameter-efficient transfer for physics-informed neural networks (PINNs) in two-dimensional natural convection. Compact adapter modules are inserted between frozen layers of a pre-trained PI...
Interface engineering in ferroelectric films
The switchable polarization of ferroelectric materials and their coupling to external fields provide the physical basis for their applications in storage and sensing and for constructing functional in...
Ultrahigh-Q chalcogenide micro-racetrack resonators
High-quality factor microresonators are an attractive platform for the study of nonlinear photonics, with diverse applications in communications, sensing, and quantum metrology. The characterization o...
Reduced dark current InAs/GaAs quantum dot photodetectors on Si(001) via spatially separated co-doping
In this paper, we report reduced dark current quantum dot (QD) photodetectors (PDs) grown on Si(001) substrate by spatially separated co-doping technique, including n-type direct doping in QDs and p-t...
A comparison between separately calibrated <i>P</i> -α and mesoscale models for weak shock compaction of granular sugar
This study compares calibration strategies for predicting particle velocity in granular sugar subjected to weak shock loading, using measurements from flyer-plate impact experiments as a benchmark. Tw...
Plasma modification promotes self-alignment of SiC particles for enhanced nonlinear conductivity of epoxy composites
Electric field-assisted fabrication technology can enhance the nonlinear conductivity of composites along the alignment direction by driving the self-assembly of fillers. However, it is difficult to f...
Improved interface contact and defect passivation for enhanced charge dynamics of perovskite photovoltaics
Compact and uniform electron transport layers with additional functionality can effectively suppress carrier recombination and facilitate charge extraction. To regulate the preparation process and fun...
A physically informed and transferable framework for predicting cubic crystal lattice constants
The lack of transferable machine learning (ML) models across different material classes remains a fundamental obstacle to the predictive design of heterostructures and advanced materials. This is beca...
Single-pixel imaging of variable-speed rotating objects via geometric moment centroid localization
In single-pixel imaging of rotating targets, uncertainty in the target's angular position frequently causes misalignment between the projected illumination patterns and the object's spatial distributi...
Impact of gate voltage on switching field of perpendicular magnetic tunnel junctions with a synthetic antiferromagnetic free layer
We present micromagnetic simulations and experiments on voltage-assisted field switching in perpendicular magnetic tunnel junctions (MTJs) with a synthetic antiferromagnetic (SAF) free layer, where th...
High thermal conductivity of rutile-GeO2 film by metal-organic chemical vapor deposition: 52.9 W m−1 K−1
Rutile germanium dioxide (r-GeO2) has recently emerged as a promising ultrawide-bandgap (UWBG) semiconductor owing to its wide bandgap (∼4.4–5.1 eV), ambipolar doping potential, and high theoretical t...
X-ray photoelectron spectroscopy and photoluminescence study of copper and magnesium doped beta-phase Ga2O3
Magnesium (Mg) doped, copper (Cu) doped, and Mg and Cu co-doped β-Ga2O3 thin film samples were grown on c-plane sapphire substrates using plasma-assisted molecular beam epitaxy. X-ray photoelectron sp...
Investigating magnetically induced dynamics with x-ray photon correlation spectroscopy to enhance contrast in magnetomotive ultrasound imaging
A synchrotron-based experiment was carried out to demonstrate the potential of x-ray photon correlation spectroscopy (XPCS) to characterize collective dynamics driven by superparamagnetic iron oxide n...
Opposite thermal conductivity trends in graphene and silicene driven by distinct interlayer coupling mechanisms
Interlayer coupling fundamentally governs the structural, electronic, and thermal properties of two-dimensional (2D) materials, yet its role in phonon transport remains incompletely understood. Here,...
Continuous electrical tuning of reflectivity using phase-change materials
Phase-change materials (PCM) have gained considerable interest in the photonics community as nonvolatile tunable materials for reconfigurable devices. Here, we experimentally demonstrate the continuou...
High-mobility AlGaN/GaN heterostructures directly grown on diamond (111) substrates using a high-temperature physical-vapor-deposition AlN nucleation layer
The direct epitaxial growth of GaN on diamond substrates offers a fundamental solution for thermal management in high-power-density GaN electronic devices. However, the amorphous layer and the strong...