🔬 physics

High-temperature features in the EPR spectra of Cu2MnBO5

This study reports the synthesis of needle-like Cu3−x_{3-x}Mnx_xBO5_5 single crystals and their EPR characterization above 300 K, revealing three distinct resonance lines including a high-temperature magnetic polaron signal and demonstrating that the inverse magnetic susceptibility's temperature dependence is influenced by the measurement magnetic field.

Ilshat Fazlizhanov, Ruslan Batulin, Mikhail Cherosov, Aleksei Shestakov, Ivan Yatsyk, Evgeniya Moshkina, Maxim Molokeev (…)2026-10-28
🔬 physics

Viscoelastic Flow and Heat Transfer in Porous Media: Global Sensitivity, Thermal–Momentum Trade-Offs, and Interpretable Surrogate Modeling

This study integrates numerical simulations, global sensitivity analysis, and interpretable machine learning to characterize viscoelastic flow and heat transfer in porous media, revealing distinct thermal and momentum control mechanisms and identifying optimal trade-off states for engineering design.

Ismail Masalha, Mustafa Awwad Al-Khawaldeh, Omer A. Alawi, Walaa G. Al-shawabkeh, Tibor Poós2026-10-28
🔬 physics

Tomography-free quantum diagnostics of dissipative quantum chaos

This paper introduces a tomography-free diagnostic framework based on the propagator-norm form factor Φ(t;θ)\Phi(t;\theta), which distinguishes chaotic from integrable dissipative quantum dynamics by analyzing profile shapes and excess magnitudes beyond simple spectral signatures, while linking these theoretical findings to practical measurement protocols via Choi-state purity and block-encoded propagators.

Hikaru Wakaura, Taiki Tanimae2026-10-28
🔬 physics

Homogeneous bidirectional locking enables reinforced buried interface for high-resolution perovskite X-ray imagers

This study introduces a homogeneous bidirectional locking interlayer strategy that reinforces the buried interface of solution-processed perovskite films, significantly enhancing mechanical robustness and charge collection efficiency to enable high-resolution, low-dose X-ray flat-panel imagers suitable for 3D computed tomography.

Xiaoming Li, Yingjun Cai, Yunfei Ren, Xuyang Jiang, JianLiang Li, Zhicheng Wang, Yibo Geng, Ankang Li, Xiaopeng Li, Haib (…)2026-10-28
🔬 physics

First principles investigation of water adsorption, dopant segregation and surface thermodynamics of Mg and Sr substituted CaO(001) for Ca(OH)2/CaO thermochemical energy storage

This study uses density functional theory to demonstrate that while Mg and Sr dopants minimally affect the bulk equilibrium of the Ca(OH)₂/CaO thermochemical cycle, their strategic placement on the CaO(001) surface significantly enhances water binding energy and desorption temperatures, with surface Mg and Sr acting through distinct mechanisms to tune water uptake independently of the storage temperature.

Abdul Rauf, Abdul Shakoor Sabir, Muhammad Danish2026-10-28
🔬 physics

Calibration of the Harshaw 6600 Plus Tld Readers and Thermoluminiscent Dosimeter (Tld-100) Cards at the Personal Dosimetry Laboratory

This study details the calibration of Harshaw 6600 Plus TLD readers and TLD-100 cards at the Ghana Atomic Energy Commission's Secondary Standard Dosimetry Laboratory to establish a traceable, quantitative relationship between dosimeter readouts and ionizing radiation doses under controlled environmental and beam parameters, thereby ensuring accurate dosimetry for regulatory compliance and safety across medical, industrial, and research sectors.

H.K. Agyeman2026-10-28
🔬 physics

Overview and Findings From the 2016 Inter-Comparison Exercise on Individual Monitoring for External Exposure

This report details Ghana's successful participation in the 2016 IAEA inter-comparison exercise for individual external radiation monitoring, where the Personnel Dosimetry Laboratory demonstrated satisfactory performance in measuring operational quantities Hp(10) and Hp(0.07) across various testing parameters, thereby validating the reliability of its personal monitoring services.

H.K. Agyeman2026-10-28