Applied Physics Papers of the Week

We introduce eigenkit, a provider-neutral quantum computing library that separates algorithm definition from backend execution through a common circuit representation and provider interface.

In this work, we present an in-situ, non-destructive optical methodology to determine the CTE of suspended nanofilms by tracking the temperature-dependence of their vibrational frequency.

In this Letter, we examine the physical mechanisms governing their formation, length scales, and geometric organization.

Here, we introduce local information processing capacity (L-IPC), which represents individual dynamical states as vectors in an infinite-dimensional Hilbert space and decomposes their computational properties through subspace projections onto nonlinearity orders and memory steps, with the residual quantifying computational irrelevance.

Their performance depends on interactions among material properties, surface morphology, contact mechanics, charge generation and external circuits. This review examines these interactions across length scales to assess how material and interface descriptions support predictive device design.

We find that the zero-point renormalization alone, without any polarization-carrying photoexcited phonons and with barely any alteration of the band dispersion, dramatically reshapes the SC spectrum: emergent low-energy peaks arise from phonon-assisted optical transitions between momentum-distinct states, with a pronounced redshift of higher-energy features.

We numerically investigate the collision and fracture processes of ball milling based on a minimal model of a three-sphere geometry using discrete element method (DEM) simulations combined with Christensen-type and Weibull-type normalized fracture criteria.

We develop a continuum model for two identical square-shaped resonators coupled by a shared tether and compare the analytical predictions with finite element simulations.

This paper critically examines five interrelated gaps in that formulation: the electrostatic justification of charge quasi-neutrality, the determination of the quasi-neutral-region electric field, the explicit treatment of majority-carrier transport, the spatial reconciliation of electron and hole currents, and the evaluation of terminal current from the resolved local transport.

We propose a travelling-wave microstrip-line (MSL) approach to approximate the spatially nonuniform excitation experienced by dielectric pads near MRI RF coils and to guide ADM characterization and tuning against a reference dielectric.

This study develops an Action-Conditioned Traffic Prediction Operator (ATPO) driven by sparse, heterogeneous observations and candidate multi-ramp actions, and embeds it in an uncertainty-aware CRM framework (ATPOUCRM).

A series of monocrystalline lithium niobate (LN) thin films on low-resistivity silicon (LNOS) substrates, with thicknesses ranging from micrometers down to tens of nanometers, were prepared through chemical-mechanical polishing of pristine crystal films. By employing the electric-field poling technique, high-quality periodically poled lithium niobate (PPLN) structures with submicrometer periodicity were fabricated in these LNOSs, and full-thickness polarization reversal beneath the poling electrodes with a well-defined depth profile was achieved.

We introduce the $\Lambda$-chart, a Smith-chart companion on which budgets and requirements are read graphically, and apply it to four published microwave case studies.

Here we report a lithography-free, apodized 163° Y-cut lithium niobate thickness-shear resonator with reduced electrically visible spurious responses while preserving the intrinsically large coupling of the thickness-shear mode.

We address both by theory, grain-scale numerical simulations and a grain velocity estimate.

For the open-source level-set simulator ViennaPS, this work presents a surface model whose rate laws, Jacobian and velocity are derived from a reaction file and evaluated with ray-traced fluxes.

Using angle-resolved Stokes Fourier polarimetry, we show that metasurface coupling produces directional emission, near-normal dissymmetry factors exceeding 0.7, and, remarkably, direction-dependent reversal of the emission handedness at fixed molecular stereochemistry.

Bulk band analysis and finite-system simulations predict topological edge and corner states in the designed structure, while frequency-resolved surface-elevation measurements confirm the corresponding localized modes.

In this work, we demonstrate, to our knowledge, the first complete Au-free metallization platform for Al$_{0.65}$Ga$_{0.35}$N-channel MOS-HEMTs, combining electron-beam-evaporated and sputtered Ti/Al/Ti ohmic contacts with sputtered TiN and Pt gate metals.