Applied Physics Letters
Articles in this Issue
Luminescence mechanism of prismatic stacking faults in homoepitaxial AlN
A fundamental understanding of the correlation between the microstructure and luminescence properties is critical to advancing deep-ultraviolet optoelectronic applications of aluminum nitride (AlN). H...
Strongly polarized metal telluride with slight metal precipitation enables excellent long-wave infrared transparent conductive properties
Long-wave infrared transparent conductive films (LITCFs) are crucial for next-generation infrared optoelectronic devices. However, the development of high-performance LITCFs is extremely challenging d...
A model for hydrogel-based bioprinting
We adapt a constitutive model for the yielding of hydrogels in one-dimensional shear to the elongation-dominated flow in extrusion bioprinting, and develop a finite-element method for computing the mo...
Janus XGeN3 (X = Cr, Mn, Fe) monolayer with large out-of-plane magnetic anisotropy and high Curie temperature
Two-dimensional magnetic materials have garnered extensive attention for their exceptional properties and diverse applications, yet their low Curie temperature (Tc) and in-plane magnetic anisotropy se...
Sorting nanoparticles by their optical absorption
This work demonstrates the continuous-flow separation of ≈50 nm metal nanoparticles by their optical properties using counter-propagating laser beams. Metal nanoparticles are widely used, particularly...
High-performance solar-blind UV photodetector based on Ti3C2Tx MXene/α-Ga2O3 heterojunction
The integration of two-dimensional MXenes with ultrawide bandgap semiconductors presents a novel pathway for high-performance optoelectronics. However, the coupling of Ti3C2Tx with the corundum metast...
Valence equivalence guided high-throughput search for stable monolayer MA2Z4 and M2A2Z4
The chemical vapor deposition synthesis of two-dimensional (2D) materials without bulk counterparts, such as MoSi2N4, has opened new avenues for materials design. MoSi2N4 can be viewed as MoS2 in whic...
Thermal transport in ultra-drawn polyethylene films
Mechanical stretching is an effective strategy for enhancing in-plane heat transport in polymers, yet the atomistic mechanisms governing thermal conductivity evolution under high draw ratios remain un...
NiCo alloys with optimized electronic structure for ultralow overpotential alkaline hydrogen evolution
Modulating the electronic structure of alloy catalysts is a pivotal strategy for enhancing their intrinsic hydrogen evolution reaction (HER) performance. This work demonstrates that incorporating coba...
Step-guided etching toward aligned MoS2 nanoribbons
Fabricating aligned arrays of hexagonal transition metal dichalcogenide nanoribbons is essential for high-density integrated devices but remains challenging due to the intrinsic lattice symmetry, whic...
A bilayer structure laterally excited bulk acoustic resonator with enhanced heat dissipation and acoustic properties
The poor heat dissipation of the laterally excited bulk acoustic resonator (XBAR) based on a single-layer piezoelectric film prevents it from sustaining operation under high-power conditions. Conseque...
Upper bounds on charging power and tangible advantage in quantum batteries
A quantum battery is expected to outperform its classical counterpart due to quantum effects. Usually, in a quantum battery made of N cells, quantum advantage is demonstrated through super-extensive s...
Dielectric spectroscopy and electrochemical modulation of polymorphic Ag+ migration in PVP-coated AgI nanoparticles
Polyvinylpyrrolidone (PVP)-coated silver iodide nanoparticles (12.3–15.6 nm) were synthesized to investigate Ag+ transport relevant to halide solid electrolytes for all-solid-state batteries. Broadban...
Ultra-broadband ventilation sound insulation by honeycomb hollow-out acoustic metasurface
Conventional ventilation sound insulation requires closed cavities to sustain strong acoustic resonance for reflecting incident waves. In this Letter, we propose a different meta-structure design that...
Mechanism of point-defect-driven evolution in ferroelectricity of AlScN films
The performance and reliability of wurtzite-type ferroelectric AlScN films are critically influenced by point defects, particularly nitrogen vacancies (VN·,(··),(···)), although a systematic understan...
Enabling high giant magnetoresistance in simple spin valves with ultrathin seed and free layers
Emerging spin–orbit torque devices based on spin valves require a thin magnetic free layer to maximize the torque per moment. However, reducing the free-layer thickness to ≲2 nm deteriorates the giant...
High-performance piezotronic quantum wells by tuning the quantum-confined Stark effect
Recent advances in quantum piezotronics have highlighted the potential of strain-induced polarization fields to modulate quantum transport properties and manipulate quantum states in nanodevices. In t...
Inverse design epsilon-near-zero-based broadband nonreciprocal thermal emitter using hybrid deep learning framework
Nonreciprocal thermal radiation, which breaks Kirchhoff's law by decoupling absorptivity and emissivity, is essential for advanced radiative heat transfer control. However, achieving broadband and tun...
Excitation-dependent multi-color emission in lead-free double perovskites with Er3+–Yb3+ cross relaxation for information encryption
Lead-free halide double perovskites have emerged as ideal host materials for ion doping due to their inherent structural stability, low toxicity, and unique ability to accommodate multiple luminescent...
Frequency-modulated enhancement of microwave resonator sensing
We use the Pound–Drever–Hall (PDH) technique to characterize the frequency stability of a microwave-frequency surface acoustic wave resonator-based sensor. The multi-mode acoustic resonator is integra...
Mechanism for enhancing the power conversion efficiency of Cu2ZnSn(S,Se)4 solar cells via MgF2 anti-reflection coating deposition
In this study, MgF2 anti-reflection coatings (ARCs) with different thicknesses were deposited on the surface of Indium Tin Oxide (ITO) located between Ag electrodes of a CZTSSe solar cell by vacuum ev...
Controlled p-type doping in (111)NiO epitaxial films through ions irradiation
The effect of irradiation by Ar ions with energy of 300 keV and different fluences (F) on the structural and transport properties of (111) nickel oxide (NiO) epitaxial films is investigated. It has b...
Ion irradiation defect engineering modulates thermal transport in MoS2/Si heterostructure
We investigate the thermal transport behavior in MoS2/Si (2D/3D) heterostructure through ion irradiation defect engineering, revealing differentiated regulation mechanisms for interfacial and in-plane...
PEDOT:PSS-assisted interfacial stabilization of Li-rich NMC cathodes for high-performance lithium-ion batteries
There is a pressing need to develop lithium and manganese-rich layered oxides (Li-rich NMCs), such as Li1.2Ni0.16Co0.08Mn0.56O2, as potential cathode materials. However, they possess disadvantages suc...
Coupling between ferroelectric distortions and excitonic properties in PbTiO3
PbTiO3 is a ferroelectric perovskite semiconductor with favorable electronic and optical properties, making it suitable for a wide range of applications, including photo-catalysis and (opto)electronic...