🔬 physics

Capillary breakup of free and wetting liquid bridges of aqueous xanthan gum solutions

This study experimentally investigates the capillary breakup of aqueous xanthan gum liquid bridges, revealing that while free bridges exhibit distinct inertia-capillary, elasto-capillary, and viscous-capillary regimes, wetting bridges display a unified viscous-capillary response that collapses onto a master curve due to flow history effects and shows reduced sensitivity to substrate wettability.

Salar Farrokhi, Peyman Rostami, Günter K. Auernhammer, Steffen Hardt2026-07-29
🔬 physics

Band-Gap Engineering in Cubic MgTiX₃ (X = S, Se) Chalcogenide Perovskites: A DFT Study for Photovoltaic and Photodetection Applications

This study employs first-principles DFT calculations to demonstrate that cubic MgTiS₃ and MgTiSe₃ chalcogenide perovskites possess tunable wide band gaps, strong optical absorption, and non-toxic stability, making them promising sustainable alternatives to lead-based materials for next-generation photovoltaic and photodetection applications.

Adegboyega Anthony Babajide, Olopade Muteeu Abayomi, Ayuba Rasheed, Adewoyin Adeyinka David2026-07-29
🔬 physics

A method combining the continuum-discontinuum method and the SPH method for simulating fluid-solid interaction problems

This paper proposes a novel hybrid method combining the continuum-discontinuum method and smoothed particle hydrodynamics (SPH) to effectively simulate complex fluid-solid interaction problems involving solid deformation, cracking, and motion without the need for interface elements or mesh reconstruction, as validated by experimental and numerical comparisons.

Xueyuan Bai, Yinlong Chen, Xuebin Wang, Qun Zhang2026-07-29
🔬 physics

Stochastic Material Characterization of SWCNT-Nanocomposites Based on Multiscale Finite Element and Neural Network Coupling

This paper proposes a machine learning-based framework that couples multiscale finite element analysis with Artificial Neural Networks to efficiently characterize the non-Gaussian, vacancy-driven stochastic mechanical properties of SWCNT-reinforced polymer composites, significantly overcoming the computational limitations of traditional Monte Carlo simulations.

Jorge Palacios Moreno¹, Rajamohan Ganesan²2026-07-29
🔬 physics

Accurate prediction of the α→β phase transformation temperature in tin via full anharmonic treatment

This study demonstrates that employing a full anharmonic treatment via thermodynamic integration on an Atomic Cluster Expansion potential successfully predicts the α→β phase transformation temperature of tin (288 K) with high accuracy, whereas the quasi-harmonic approximation significantly overestimates it (377 K) due to its failure to capture substantial vibrational anharmonicity in the metallic β-phase.

Petr Šesták, Matous Mrovec, Martin Friák2026-07-29
🔬 physics

The proton has no lifetime, only a cross-section: Triality-locked baryon number and vortex-catalyzed nucleon decay

This paper proposes that if baryon number is an exact discrete gauge symmetry locked to the Z3 center of color, protons possess no intrinsic lifetime but instead decay via a vortex-catalyzed process with a cross-section dependent on local cosmic defect density, resulting in a unique signature of environment-dependent, clustered ∆B=3 events rather than standard ∆B=1 decays.

Mohammad Hannan2026-07-29
🔬 physics

The Unified HEX Model: A Pre-Geometric Phase-Field Proposal for Emergent Spacetime and Quantum-Like Dynamics

The paper proposes the Unified HEX Model, a pre-geometric phase-field framework where effective spacetime and quantum-like dynamics emerge from the relative phase structure of two complex scalar fields, offering a falsifiable pathway to interpret gravity as a hydrodynamic approximation and topological phase knots as candidates for dark matter and vacuum energy.

Hector Ortiz2026-07-29