physics papers | Gist.Science

A systematic investigation of the gravity dependence of static and dynamic angles of repose from 0.01g to 1g

This study utilizes controlled avalanche experiments on the China Space Station to demonstrate that while the static angle of repose remains constant across gravity levels from 0.01g to 1g, the dynamic angle of repose increases with gravity up to approximately 0.16g before saturating, a behavior attributed to a gravity-dependent rolling friction coefficient that significantly improves models of regolith on small Solar System bodies.

Meiying Hou, Ke Cheng, Tuo Li, Xiaohui Cheng, Sen Yang, Zhihong Qiao, Xiang Li, Dengming Wang, Ke Chen, Raphael Blumenfe (…)2026-08-28

🔬 physics

Source-dependent epoxide depletion in graphene oxide induced by soft X-rays and low-energy electron irradiation

This study demonstrates that while both soft X-rays and low-energy electrons induce selective, dose-dependent depletion of epoxide groups in graphene oxide, the efficiency of this reduction per unit absorbed dose is significantly higher for X-rays than for electrons.

Enver Faella, Daniele Capista, Luca Camilli, Luca Lozzi, Maurizio Passacantando2026-08-28

🔬 physics

A Discrete Occupation-Flow Diagnostic for Orbital-Filling Crossovers in sd-Shell Nuclei: A Multi-Interaction Benchmark in Ne, Mg, and Si

This paper introduces a discrete orbital occupation-flow diagnostic, specifically the curvature $\kappa(N)$ , to map sequential orbital crossovers in Ne, Mg, and Si isotopes using USD-family interactions, revealing that this metric traces shell evolution distinct from collective coherence and highlighting the model's quantitative reliability except in the well-known island-of-inversion nuclei where the sd-shell space fails.

Luay F. Sultan2026-08-28

🔬 physics

SWCNTs thin film transistor circuits fabricated on flexible substrates with inkjet-printed silver electrodes for photodetectors

This paper demonstrates the fabrication of flexible single-wall carbon nanotube thin-film transistors and PMOS inverters using inkjet-printed silver electrodes, revealing distinct photoresponse behaviors and hysteresis reversals under white-light illumination that are governed by photo-induced charge-carrier recombination and Fermi-level-dependent carrier dynamics.

Subhash Singh, Piyush Ranjan, Sanjiv Sambandan2026-08-28

🔬 physics

Full-Range Front Criteria for Generalized van Genuchten-Mualem Laws, with Finite-Head Applications

This paper establishes a direct traveling-wave criterion for determining whether generalized van Genuchten–Mualem laws support steadily moving saturation fronts across the full saturation range, analyzes how endpoint indices govern front behavior and statistical moments, and evaluates the impact of finite pressure-head limits and parameter estimation methods on front classification and conductivity reconstruction accuracy.

Kyungdoe Han2026-08-28

🔬 physics

Thermodynamic Admissibility, Finite-Speed Heat Transport, and Wave Stability in Generalized Thermoelasticity: A Critical Review with Analytical Proofs

This paper presents a unified continuum-thermodynamic framework to critically review and analytically prove the stability, admissibility, and wave propagation characteristics of major generalized thermoelasticity models, ultimately providing a model-selection guide for researchers.

Connor Noble2026-08-28

🔬 physics

Energy-Stable Curvature-Gradient Shallow Shells with Navier Spectral Resolution: Coercivity, Modal Monotonicity, and Computational Benchmarks

This paper introduces an energy-stable linear curvature-gradient shallow-shell model that preserves variational structure and positive definiteness, proving its coercivity and monotonic eigenvalue behavior while demonstrating through Navier spectral benchmarks that the gradient term selectively stiffens short-wave bending modes to accelerate convergence and provide a computationally efficient framework for size-dependent structural mechanics.

Connor Noble2026-08-28

🔬 physics

Long-Wavelength Lorentz-Like Propagation in a Deformable Cellular Space

This paper demonstrates that while spatial discreteness in a deformable cellular space introduces preferred directions, a stationary ergodic ensemble with rotational invariance forces the homogenized propagation tensor to be isotropic, thereby establishing a controlled route to Lorentz-like wave propagation in the long-wavelength limit despite the underlying microscopic anisotropy.

Shengliang Dong2026-08-28

🔬 physics

GHZ-State Ramsey Interferometry on PKTron and IBM Quantum Hardware: Toward Quantum-Enhanced GPS-Denied Navigation Sensors

This study validates the fundamental quantum sensing primitive for GPS-denied navigation by successfully demonstrating Heisenberg-limited phase estimation using GHZ-state Ramsey interferometry on both noiseless PKTron simulations and real-world IBM Quantum hardware, while explicitly clarifying that the work represents a validated circuit component rather than a fully operational navigation system.

Zuhair Ahmed2026-08-28

🔬 physics

BB84 Quantum Key Distribution on PKTron and IBM Quantum Hardware: Eavesdropper-Detection Validation for Secure Military Communications

This study validates the eavesdropper-detection mechanism of the BB84 Quantum Key Distribution protocol by demonstrating that intercept-resend attacks induce a statistically significant Quantum Bit Error Rate (QBER) on both PKTron simulations and IBM Quantum hardware, confirming the physical basis for secure military communications while acknowledging the need for further infrastructure to achieve operational deployment.

Zuhair Ahmed2026-08-28

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