Applied Physics Letters
Articles in this Issue
Probing ultrafast-laser inscribed waveguides in Er:LiYF4 via <i>μ</i> -spectroscopy for refractive-index engineering
Ultrafast-laser inscription enables the fabrication of three-dimensional photonic microstructures in laser-active dielectric crystals, yet the interplay between geometry and laser-induced refractive-i...
Narrowband signal generation by spintronic THz emitters
We report a technique for generating narrowband, high-frequency electrical signals using spintronic terahertz emitters (STEs) integrated onto coplanar waveguides (CPWs). Conventional STE operation typ...
&gt;95% TM-polarized 780 nm diode laser enabled by GA–NN co-optimization of quantum states and optical states
We demonstrate a high-performance 780 nm diode laser, achieving a transverse-magnetic degree of polarization of &gt;95.2% and a wall-plug efficiency of 56.23% at an injection current of 10 A. This...
Surface acoustic wave enabled all-optical determination of the interlayer elastic constants of a van der Waals interface
Understanding the properties of two-dimensional material interfaces with the substrate is necessary for device applications. Surface acoustic wave propagation through a layered material flake on a sub...
Quantum cascade detectors based on dual-upper-state active regions with a broadband response
We propose broadband quantum cascade detectors based on a dual-upper-state active region design. The dual-upper-state concept is known to produce broad gain in quantum cascade lasers and is also expec...
Sub-3 V monolithic integration of GaN-based micro-LEDs with <i>p</i> -MOSFETs
Low threshold voltage (VTH) is essential for monolithic integration of GaN-based Micro-LEDs with metal-oxide-semiconductor field-effect transistors (MOSFETs), enabling low-power, long-lifetime micro-d...
Frequency dependent dielectric study on liquid crystal based aptasensor for the sensitive and selective detection of tumor biomarker
A liquid crystal (LC)-based dielectric aptasensor was developed for the sensitive and selective detection of tumor biomarker, platelet-derived growth factor (PDGF-BB). The LC aptasensor was prepared b...
Enhanced pseudocapacitance rectification by doping metalloid phosphorus in high entropy oxide (CrMnFeCoNi)3O4
Metalloid phosphorus-doped spinel-type high-entropy oxide (CrMnFeCoNi)3O4 is synthesized to solve the challenges of limited pseudocapacitance rectification for supercapacitor diodes. It demonstrates b...
Ferroelectric control of the layer-polarized anomalous Hall effect in a 2D TiClAsH bilayer via superposition engineering
Ferrovalley (FV) materials have attracted much attention due to their unique spin-valley coupled properties. In this work, we predict FV single-layer TiClAsH, which has 77 meV of intrinsic valley pola...
Small polaron hopping conduction mechanism in Mg-doped LaMnO3 ceramics
The cold sintering process (CSP) is frequently applied for the fabrication of ceramics with a low melting point and sintering temperature. However, the effect of CSP on electrical performance in LaMnO...
A fast-switching threshold memristor based on AlN/Ag/AlN stacked device for mental disorder electroencephalogram recognition
As artificial intelligence technology advances, volatile threshold switching (TS) devices gain increasing attention for neuromorphic applications; however, most conventional TS devices suffer from slo...
Recent progress on electric field control of magnetic tunnel junctions via strain-mediated magnetoelectric coupling
The rapid progress in information technologies has driven a strong demand for memory devices that combine large storage capacity, high-speed operation, and reduced energy consumption. Magnetic tunnel...
Viscoelastic effect on the wall pressure induced by tandem cavitation bubbles near a rigid boundary: A numerical study
High-speed liquid jets and pressure waves are key features in the near-wall collapse of cavitation bubbles, which generate strong hydrodynamic loadings on solid surfaces. However, previous studies mai...
Shear-driven off-plane detachment of water drops from superhydrophobic surfaces
Shear-driven drop motion is a common phenomenon with critical implications for applications such as aircraft anti-icing, where efficient drop detachment is essential to reduce water retention, limit f...
High-resolution broadband characterization of resonance dispersion in an optical microresonator
Accurate knowledge of the uneven free spectral range of an optical microresonator, which provides direct insight into group velocity dispersion, is essential for understanding and controlling Kerr fre...
Flexible dual-heterojunction device design for high-performance photodetection and energy harvesting in self-powered visible light communication
Self-powered visible light communication (VLC) is attracting growing interest for its high-speed transmission, low power consumption, and sustainability. However, conventional optoelectronic converter...
Temperature imaging of chips with high spatiotemporal resolution using diamond nitrogen-vacancy centers
The operating temperature of a chip is a critical factor determining its operational efficiency and service life. In industrial control environments, temperature imaging of a chip plays a vital role i...
Theory of electric reactance emerging from spin Hall effect
The spin Hall effect in a heavy metal intercorrelates an AC electric current to the magnetization dynamics in an adjacent ferromagnet, which manifests as an electric reactance in the system's current–...
Reduction of carbon impurities in GaN grown by MOCVD using an NH3-plasma source
In this work, we demonstrate GaN epitaxial growth by plasma-enhanced metalorganic chemical vapor deposition (MOCVD) using trimethylgallium [TMGa, Ga(CH3)3] and ammonia (NH3). Impacts of TMGa, NH3 mola...
Cycle-dependent evolution of critical heat flux in pool boiling in water on copper driven by oxidation-induced surface modification
Boiling heat transfer enables extremely high heat fluxes at small temperature differences, but the underlying mechanisms remain difficult to resolve due to the dynamic interplay of microscale interfac...
Enhanced visible-light manipulation of the ferromagnetism in 3D cobalt nanosphere by sphere size engineering
Rapid and energy-efficient magnetization control is essential for advancing next-generation magnetic sensors and memory technologies. Photovoltaic gating of magnetism via light irradiation leverages a...
Triple point-type morphotropic phase boundary in ferromagnetic (1 − <i>x</i> )TbFe2– <i>x</i> NdFe2 system and corresponding magnetoelastic response
The morphotropic phase boundary (MPB) phenomenon plays a pivotal role in ferromagnetic systems for achieving field-induced enhancement of magnetoelastic responses. However, conventionally titled MPBs...
Probing hysteresis and bifurcation dynamics in reactive radio frequency plasmas
Hysteresis between capacitive (E) mode and inductive (H) modes is a fundamental characteristic of radio frequency (RF) plasmas that are driven by a saddle-node bifurcation. While considerable research...
Lattice geometry-dependent magnon modes and harmonic generation in Permalloy antidot waveguides
Custom-engineered nanomagnonic waveguides with enhanced nonlinear properties are pivotal for advancing next-generation wave-based spintronic technologies. In this work, we systematically explore how l...
Enhanced Raman scattering by fast GaN phonon-polaritons
Phonon-polaritons propagating in crystal volume offer the possibility of transferring information throughout matter (via phonons) at high (photon-like) velocity and tunable frequency/wavelength in the...