Applied Physics Letters
Articles in this Issue
Sensitive hydrogen detection using off-axis integrated cavity output spectroscopy at 2.1 <i>μ</i>m
Reliable hydrogen (H2) detection is essential for advancing hydrogen energy applications. In this study, we report a sensitive H2 detection method using off-axis integrated cavity output spectroscopy....
Self-catalyzed vapor–liquid–solid growth of GaS nanobelt for nano-optoelectronic applications
GaS, with the largest bandgap of group III–VI van der Waals semiconductors, is a potential building block of optoelectronic applications. In addition, one-dimensional structures, such as nanobelts, ar...
Twisted metamaterials for mechanical optical switch
The emergence of twisted metamaterials opens up an avenue for research in metamaterials. However, the current emphasis primarily lies in mechanics, rendering it intriguing to explore the application o...
Improved light absorption enables highly efficient carbon dots luminescent solar concentrator
Carbon dots (CDs) offer several advantages, including non-toxicity, facile synthesis, high fluorescence efficiency, and large Stokes shift, rendering them up-and-coming candidates for luminescent sola...
Programmable surface-charge-modulated wettability for controllable droplet manipulation
Droplet manipulation on open surfaces plays a key role in numerous applications. The enhancement in controllability, flexibility, and simplicity of droplet manipulation is sustainably demanded and dev...
Transport properties of h-BN lateral devices
One of the well-established and significant applications of hexagonal boron nitride (h-BN) is in solid-state neutron detectors, which necessitate the development of quasi-bulk h-BN crystals. To advanc...
Monolithic on-chip integration of micro-thin film thermocouples on multifinger gallium oxide MOSFETs
Gallium oxide (Ga2O3), with its ultra-wide bandgap (&gt;4.5 eV), is a key material for the next-generation power electronics due to its high breakdown voltage and efficient power-switching capabil...
Publisher's Note: “A phononic crystal waveguide using surface waves below the sound cone” [Appl. Phys. Lett. <b>126</b> , 022204 (2025)]
Nonradiative quenching of EPR signals in germanium-doped AlGaN: Evidence for <i>DX</i>-center formation
We present photo-electron paramagnetic resonance (EPR) measurements and first-principles calculations that indicate germanium (Ge) is a DX center in AlGaN. Our photo-EPR measurements on Ge-doped AlGaN...
Penetration of ionization wave through dielectric microhole in atmospheric pulsed discharges
Microstructure-enhanced discharges are critical for achieving higher plasma electron density and energy, offering significant potential in advanced plasma applications. A two-dimensional fluid model o...
Towards higher electro-optic response in AlScN
Novel materials with large electro-optic (EO) coefficients are essential for developing ultra-compact broadband modulators and enabling effective quantum transduction. Compared to lithium niobate, the...
Normal-incidence mid-infrared photodetection via intraband transitions in InGaAs/InP multiple quantum well nanowire arrays
Recently, InGaAs/InP multiple quantum well nanowires grown by selective area epitaxy have been demonstrated with uniform morphology and high optical quality. The InGaAs quantum wells wrapping around t...
Plasma-induced optically active defects in hexagonal boron nitride
Hexagonal boron nitride (hBN) has been the subject of numerous research efforts in the last decade. Of particular interest is the creation of optically active defects in hBN because of their easy inte...
Measurements of in-plane thermophysical properties on nanoscale-thick films by lock-in thermography
We demonstrate a versatile technique for measuring the in-plane thermal conductivity, in-plane thermal diffusivity, and volumetric heat capacity of nanoscale-thick films by means of lock-in thermograp...
Temporal uniaxial crystal in a dispersion-modulated lattice model
Time reflection and refraction, as temporal analogs to spatial phenomena, provide a degree of freedom for manipulating wave dynamics within the temporal domain. In this study, we investigate the dynam...
Electrochemical reduction for modulating spin state of nickel: A pathway to improved water and seawater oxidation
Understanding the electronic structure of catalysts is crucial for analyzing electrocatalyst behavior. Here, we present a straightforward method to modify the electronic configuration of active sites...
Microstructure modulation and mechanical properties of multicomponent Fe50Cr14Mo14C9B8Tm5 bulk metallic glass through controlled crystallization processing
Fe50Cr14Mo14C9B8Tm5 bulk metallic glass was prepared at a cooling rate of 6.36 × 104 K s−1. Its Young's modulus and compressive strength were modulated through controlled crystallization processing. A...
Room-temperature topological spin textures and magnetic-field-induced skyrmion-bimeron switching in FeSnN3 monolayer
Two-dimensional (2D) polar magnets have received considerable attention due to their intrinsic ability to host Dzyaloshinskii–Moriya interaction (DMI), which is crucial for generating topological spin...
Weak coupling of buckled germanene with high Fermi velocity on semiconducting Cu2Te
Despite its promise, growing a quasi-freestanding monolayer of germanene with Dirac cone signature remains a significant attention. Synthesizing germanene on semiconductor surfaces is highly desirable...
Stress release-induced piezoresponse in lead-free piezoceramics with high-symmetry morphotropic phase boundary
The (1 − x)(Bi0.5Na0.5)TiO3-xBaTiO3 (BNT-BT) system has attracted a great deal of interest because it presents a morphotropic phase boundary (MPB) between the rhombohedral and tetragonal phases for 0....
Trace Yb doping-induced cationic vacancy clusters enhance thermoelectrics in P-type PbTe
Alloying has been widely used to enhance thermoelectric (TE) performance, but achieving high TE performance remains challenging due to strong coupling between electrical and thermal transport in lead...
Enhanced optical response of n-type doped InAs quantum dots through interface state inactivation
Owing to the wide tuning range, high-temperature stability, flexible design, and fast recovery dynamics, quantum dots (QDs) have been widely used in many research fields, such as lasers, photodetector...
A niobium nitride superconducting hot electron bolometer direct terahertz detector working at 9 K
Increasing the bath temperature of the hot electron bolometer (HEB) while ensuring sensitivity could expand the application field and reduce the system complexity and cost. This study proposed and pre...
kV-class vertical p-n heterojunction rectifier based on ITO/diamond
Indium tin oxide (ITO) layers were sputter-deposited onto commercially available vertical p/p+ diamond structures consisting of 5 μm thick p-type (1.3 × 1016 cm−3) drift layers deposited by chemical v...
Recent trends in electro-microfluidic devices for wireless monitoring of biomarker levels
Wireless monitoring has emerged as a promising approach that enables real-time tracking of health, disease progression, and fitness, unlocking new possibilities for personalized healthcare. The review...