physics papers | Gist.Science

Thermal Analysis and Dynamics Behavior of Cattaneo-Christov Heat-Flux-Based (Fe3O4-Cu)/Water, EG-Water and Palm Oil Hybrid Nanofluid Flows through Porous Media

This study employs a Cattaneo-Christov heat flux model and Darcy-Brinkman framework to analyze the thermal stability and chaotic dynamics of (Fe3O4-Cu)/water, EG-water, and palm oil hybrid nanofluid flows through porous media, revealing how magnetic fields, nanoparticle concentrations, and thermal time-lags influence convection onset and heat transfer efficiency.

Sèmako Justin Dèdèwanou, Siba Kalivogui, Amoussou Laurent Hinvi, Thierno Mamadou Pathé Diallo, Hodévèwan Clément Miwadin (…)2026-10-29

🔬 physics

Modeling of In-Situ Nitrogen Alloying in SS316 during Laser Directed Energy Deposition

This study presents a coupled thermal–thermodynamic–kinetic model that predicts the extent of in-situ nitrogen alloying in AISI 316 during laser directed energy deposition, revealing that nitrogen uptake is kinetically limited by surface absorption dynamics rather than thermodynamic equilibrium and is strongly influenced by process parameters and dissolved oxygen.

Md Al Amin Meia¹, Shafin Ahmed¹, Md Shahriar Forhad¹, Monsuru Ramoni¹, Jianzhi Li¹2026-10-29

🔬 physics

Diffraction Characteristics of the Connes-Apodized Aperture in the Presence of Tertiary Spherical Aberration

This study investigates the diffraction characteristics of Connes-apodized circular apertures under tertiary spherical aberration and defocus, demonstrating that while image quality degrades gradually with increasing aberration, the Connes filter maintains superior energy concentration and narrow central peaks compared to other apodization functions, making it well-suited for high-resolution imaging in the presence of higher-order wavefront distortions.

VIJAYA SHANTHI LOVARI, Dasari Karuna sagar2026-10-29

🔬 physics

Comparative Analysis of Viscoelastic Models for Head-Tissue Layers under Step Loading

This study evaluates and compares four linear viscoelastic network models for head-tissue layers under step loading, deriving closed-form equations to analyze their stress relaxation and creep behaviors and identifying the three-element Maxwell approximation as a close match for total relaxation stress to guide future reduced model development.

Nafisa Ibnat Tasfee, Mohammad Ibrahim Hossain2026-10-29

🔬 physics

Certifying When Temporal Order Can Be Ignored in Continuous-Time Quantum Walks

This paper establishes a computable, nonperturbative spectral-norm bound based on temporal wedges that certifies when a continuous-time quantum walk on a dynamic graph can be accurately approximated by a single average Hamiltonian, thereby enabling simplified analysis and control while quantifying the error in state transfer and gate fidelity.

Madjid Eshaghi Gordji, Mohamadali Berahman2026-10-28

🔬 physics

Magnetoplasmonic keychains for multiplexed polarization-encoded tags

This paper introduces a magnetoplasmonic keychain system that utilizes programmable plasmonic nanostructures to convert complex magnetic field configurations into unique, polarization-encoded optical signatures, creating a physically enforced encryption framework with a vast encoding space that is infeasible to decode without the specific magnetic key.

Tae Soup Shim, Jin Hyeok Park, Hyojung Kang, Seojin Lee, Ye-Eun Choi, Hyerim Hwang, So-Jung Park2026-10-28

🔬 physics

Critical Witnesses and Square-Root Deadline Response in a Driven Toda Hamiltonian

This paper demonstrates that a finite detector gate in a periodically driven Toda Hamiltonian induces a one-sided square-root edge in ensemble first-passage probability, where critical witness trajectories on invariant symmetry fibres determine exact deadline folds and response signs through a nontrivial flag derived from a weighted Morse formula, rather than through full-flow approximations or thermal rate models.

Takashi Matsuhisa2026-10-28

🔬 physics

A Drude-Augmented Kramers–Kronig Framework for Predicting Optical Properties of Substitutionally Doped Low-Dimensional Semiconductors: Application to (8,0) SiC Nanotubes

This paper presents a computationally efficient, Drude-augmented Kramers–Kronig framework that accurately predicts the optical properties of substitutionally doped low-dimensional semiconductors using only three input parameters, successfully validating the method against first-principles calculations and experimental data while demonstrating its utility for screening diverse dopants in silicon carbide nanotubes to guide the design of optoelectronic devices.

Abebe Mulatu2026-10-28

🔬 physics

Preparation history can outweigh descriptor definition in frictionless bidisperse packings below jamming

In frictionless bidisperse packings below jamming, the assembly route (preparation history) exerts a stronger influence on fine-network connectivity descriptors than the definition of the contact gap threshold, challenging the assumption that morphology is solely a function of state variables.

Quoc-Bao Nguyen, Hoang-Quan Nguyen, Thai-Son Vu2026-10-28

🔬 physics

Real-Space Imaging of Band Topology via Wavefunction Zeros

This paper establishes a theorem linking symmetry-enforced zeros in electronic wavefunctions at high-symmetry momenta to band topology, enabling the direct imaging of topological invariants via scanning tunneling microscopy and explaining interaction effects in various quantum materials.

Julian Ingham, Raquel Queiroz2026-10-28

← Previous Next →