🔬 Category

physics

1335 papers

🔬 physics

High Sensitivity Hemoglobin Biosensing Using a Plus Shaped Gold Metasurface Refractive Index Sensor

This paper proposes a high-sensitivity, label-free hemoglobin biosensor utilizing a reconfigurable plus-shaped gold metasurface integrated with a Germanium Antimony Tellurium (GST) layer, which achieves a maximum sensitivity of 766.67 nm/RIU in its crystalline state, surpassing existing metasurface-based sensors and offering a compact alternative to bulky laboratory infrastructure for clinical diagnosis.

Syed Musthafa, Faizal Mukthar Hussain, Ahamed Hussain Asif, AmanullaKhan Mahaboob Khan2026-10-23
🔬 physics

Intrinsic Vectorial Gradiometry via Quantum Control of a Spin-based Sensor

This paper introduces a quantum control protocol for a single spin-based sensor that enables intrinsic vectorial gradiometry to overcome the limitations of traditional multi-sensor architectures, demonstrating high-precision differential sensing for applications like magnetic anomaly detection and neuronal action potential monitoring.

Jaime García Oliván, Pablo Acedo, Oliver T. Whaites, Jorge Casanova2026-10-23
🔬 physics

Transient Energy Exchange and Quantum Resources in a Driven Five-Level Kerr Optomechanical Model

This study presents a finite-time analysis of a driven five-level atom coupled to a Kerr nonlinear optical mode and a mechanical oscillator, revealing that while stronger atom-field coupling enhances entanglement, it does not preserve phase sensitivity, and that energy exchange metrics like ergotropy and signed work respond distinctively to system parameters without constituting a completed thermodynamic cycle.

SYED ANWAR, M. Ibrahim Ibrahim, S. Abdul Khalik Khalik2026-10-23
🔬 physics

More about Spin-Spin Dipole-Dipole Interactions Contributions to the Shapes of Nitroxide EPR Spectra in Solution

This paper presents experimental data confirming that dipole-dipole interactions between a nitroxide radical's unpaired electron and its own ¹⁵N nucleus (DD1) induce spectral diffusion with a π-phase jump, which exhibits negative interference with relaxation mechanisms caused by spin exchange and inter-radical dipole-dipole interactions (DD2) in solution.

Marcel Bakirov, Iskander Khairutdinov, Ruslan Zaripov, Kev Salikhov2026-10-23
🔬 physics

Characteristics of GaAs Thin Films Grown by MOVPE Using Triethylgallium (TEGa) and Tertiarybutylarsine (TBAs)

This study demonstrates that high-quality, undoped homoepitaxial GaAs thin films with smooth surfaces, low carrier concentrations, and high mobility can be successfully grown using triethylgallium (TEGa) and tertiarybutylarsine (TBAs) precursors at growth temperatures of 600°C and above, significantly outperforming films grown at lower temperatures.

Andi Isni Pujirana, Ngcali Tile, Zelalem Urgessa, André Venter, Johannes Reinhardt Botha2026-10-23
🔬 physics

Surface Charge Transition Levels and Hole Localization of Dopants in BiVO4(010) Photoanodes

Using dielectric-dependent hybrid density functional theory, this study reveals that while surface oxygen vacancies and n-type dopants act as shallow or deep donors on BiVO4(010), the p-type dopant CaBi is more promising than SrBi for water oxidation because it localizes photogenerated holes on the outermost oxygen layer rather than in the interior.

Changkyu Cho, Kyunhun Lee, Yonghyuk Lee, Taehun Lee2026-10-23
🔬 physics

Dynamics of Coherent Vortical Structures Underlying Shape-Shifting Behaviour and Impact Force Fluctuations in Oscillating Jet Nozzles

This study integrates numerical and experimental methods to demonstrate that the periodic shape-shifting and enhanced impact force of oscillating jet nozzles are driven by the formation, growth, diffusion, and dissipation of coherent vortical structures, which result in a 37.3% higher impact force and 4.28 times larger coverage area compared to straight jets.

Mubaraq Adewale Razaq, Taimoor Asim, Okwunna Maryjane Ekechukwu, Khaliq Ur Rahman, Barry Reid2026-10-23
🔬 physics

Anomalous Thermal Conductivity Reversal Driven by a Fluctuating Charge Density Wave

This study reveals an anomalous reversal of thermal conductivity in the layered metal 2H-TaSe₂, where heat transport increases with temperature due to phonon scattering off persistent, fluctuating charge density waves that survive well above the long-range ordering transition.

Zhiting Tian, Han Huang, Jinghang Dai, Joyce Christiansen-Salameh, Jiyoung Kim, Samuel Kielar, Desheng Ma, Noah Schnitze (…)2026-10-23
🔬 physics

The Partial-Accelerator Picture of Magnetic Reconnection in Solar Flares: Four Results from Order-of-Magnitude Physics

By applying order-of-magnitude physics to the premise that flare-accelerated electrons constitute only a few percent of the total population, this study derives four self-consistent results regarding energy scaling, budget constraints, and particle acceleration mechanisms in solar flares, ultimately proposing a "partial-accelerator" picture where reconnection efficiency is supply-limited and plasma beta acts as a self-regulating output.

Feiran Han2026-10-23