physics papers | Gist.Science

Do buoyancy-driven coherent structures shape the statistical and spectral properties of the tropical marine boundary-layer? An observational study.

Using high-resolution airborne observations from the MAESTRO campaign, this study demonstrates that buoyancy-driven coherent structures, identified through conditional sampling of vertical wind and buoyancy fluctuations, fundamentally alter the statistical and spectral properties of the tropical marine boundary layer by selectively modifying across-scale variance transfer rather than merely adding to background shear-driven turbulence.

Louis Jaffeux, Marie Lothon, Dominique Bouniol, Fleur Couvreux, Sandrine Bony2026-08-05

🔬 physics

Ab Initio Investigation of Structural, Elastic, and Optoelectronic Properties of Oxide Double Perovskites

This study employs DFT calculations using the WIEN2K package to investigate the structural, elastic, and optoelectronic properties of the antimony-based double perovskite oxides Sr₂PrSbO₆ and Sr₂CeSbO₆, revealing their monoclinic stability, direct band gaps of approximately 3.5 eV, and strong ultraviolet absorption capabilities.

muhammad wasim khan2026-08-05

🔬 physics

A Structural-State Effective-Friction Closure for Oceanic-Plate Subduction Interfaces

This study demonstrates that a structural-state effective-friction closure, when integrated with thermal-fluid state and slab geometry, successfully models low-friction subduction interfaces and outperforms constant-friction baselines in explaining seismic moment release, though it does not yet constitute a universal speed-only friction law.

GuoJun Pan2026-08-05

🔬 physics

Exploring the Effect of Linear Air Resistance on the Optimal Angle of Release for an NBA Free Throw

This study utilizes mathematical modeling and numerical optimization to demonstrate that accounting for linear air resistance in NBA free throws reduces the optimal launch angle from 51.4° to 49°, while also lowering the shot's apex and range.

Aryan Pradhan2026-08-05

🔬 physics

Non-Hermitian Singularities in Colloidal Plasmon–Exciton Interactions

This study reports the first observation of an exceptional point in colloidal Au@Ag nanocuboid–J-aggregate systems, demonstrating how tuning plasmonic losses and coupling strength mediates the crossover between weak and strong coupling regimes while enabling ultra-responsive refractive index sensing with distinct linear, square-root, and quadratic responsivities.

Sahin Ozdemir, Ozan Orhan, Nahit Polat, Muhammad Khan, Sinan Balci2026-08-05

🔬 physics

Mobile Exceptional Points Generate Momentum-Space Switching Domains

This paper demonstrates that mobile exceptional points, induced by cyclic modulation, partition the Brillouin zone into momentum-dependent switching domains with distinct band-permutation behaviors, ultimately enabling global band switching in both lattice models and photonic crystals.

Jung-Wan Ryu, Chang-Hwan Yi2026-08-05

🔬 physics

Mechanical properties of β-Ga2O3 thin films deposited by plasma-assisted molecular beam epitaxy

This study investigates the effect of substrate temperature (500–700°C) on the microstructural, morphological, and nanomechanical properties of β-Ga₂O₃ thin films deposited by plasma-assisted molecular beam epitaxy, revealing that increasing the temperature enhances crystallite size, hardness, Young's modulus, and fracture toughness.

Sheng-Rui Jian, Bo-Han Su, Cheng-Wei Liu, Umeshwar Reddy Nallasani, Phuoc Huu Le, Che-Nan Kuo, Yu-Min Hu, Chin-Hau Chia (…)2026-08-05

🔬 physics

Graphene random spaser

This paper proposes a novel mid-infrared nanoscale light source, a random graphene spaser, which utilizes a silicon–silica random grating to induce Anderson localization of surface plasmon-polaritons in a graphene monolayer, enabling coherent emission through stimulated amplification of localized modes rather than conventional photon scattering.

Milad Sani, Mahmood Hosseini Farzad, Stefano Lupi2026-08-04

🔬 physics

Li 2 AgAl inverse Heusler alloy under first-principles study: structural stability, elasticity, electronic structure, optical response, and thermoelectric transport

This study employs first-principles DFT calculations and the Boltzmann transport model to demonstrate that the inverse Heusler alloy Li₂AgAl is structurally stable, mechanically rigid, and metallic with strong UV absorption and promising p-type thermoelectric performance, making it a potential candidate for energy and optoelectronic applications.

Paria Nasirzade, Ebrahim Nemati-Kande, Sima Mahmoudi2026-08-04

🔬 physics

Analysis of a Multi-Layer Reconfigurable Hybrid Metamaterial Absorber for Wide-Angle Microwave Absorption, Radar Cross-Section Reduction, and Tunable Optoelectronic Applications

This paper presents a statistically validated, multi-layer hybrid metamaterial absorber utilizing tunable VO₂/graphene-inspired states to achieve wide-angle, broadband microwave absorption exceeding 91% and significant radar cross-section reduction, thereby enabling advanced applications in adaptive stealth and reconfigurable optoelectronic systems.

Rishabh Gupta, Rishi P. Singh, Arvind Kumar, Raj Kumar2026-08-04

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