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Color-center-hosting semiconductors are emerging as promising source materials for low-field dynamic nuclear polarization (DNP) at or near room temperature, but hyperfine broadening, susceptibility to magnetic field heterogeneity, and…

Quantum Physics · Physics 2022-06-01 J. Henshaw , D. Pagliero , P. R. Zangara , B. Franzoni , A. Ajoy , R. Acosta , J. A. Reimer , A. Pines , C. A. Meriles

We perform an in-depth comparative analysis of unintegrated parton distribution function (UPDF) models for isolated prompt diphoton production in proton-proton collisions at $\sqrt{s}=13$~TeV within the $k_t$-factorization framework.…

High Energy Physics - Phenomenology · Physics 2025-12-30 The CHROMA Collaboration , R. Kord Valeshabadi , S. Rezaie , K. Azizi

Molecular polaritons within the mid-infrared regime have emerged as a source for modifying and manipulating molecular and photonic properties. However, the development of new methodologies for photon generation is still a challenge in…

Quantum Physics · Physics 2025-09-17 Arley Flórez López , Johan F. Triana , José Luis Sanz-Vicario

Compulsory Dirac multipoles in the bilayer perovskite Ca3Ru2O7 are absent in published analyses of experimental data. In a first step at correcting knowledge of the magnetic structure, we have analysed existing Bragg diffraction patterns…

Strongly Correlated Electrons · Physics 2019-05-08 S W Lovesey , D D Khalyavin , G van der Laan

The synthesis and structural analysis of Mo/B periodical multilayer X-ray mirrors (PMMs) for beyond extreme ultraviolet (BEUV) optics was performed. The PMMs were deposited by a combination of pulsed DC and radio frequency (RF) magnetron…

Applied Physics · Physics 2020-11-13 Oleksiy V. Penkov , Igor A. Kopylets , Valeriy V. Kondratenko , Mahdi Khadem

A sensitivity increase of two orders of magnitude in proton (1H) and carbon (13C) spins via dynamic nuclear polarization (DNP) has been accomplished recently using a compact benchtop DNP polarizer operating at 1 T and 77 K. However the DNP…

Dynamic nuclear polarization via contact with electronic spins has emerged as an attractive route to enhance the sensitivity of nuclear magnetic resonance (NMR) beyond the traditional limits imposed by magnetic field strength and…

We studied the induction of apoptosis in Jurkat cells by UVB radiation (wavelength 290-320 nm) at a dose of 310 mJ/cm^2. We combined Fourier transform infrared (FTIR) spectroscopy with flow cytometry to determine whether the combination of…

Dynamic Nuclear Polarization (DNP) is a powerful suite of techniques that deliver multifold signal enhancements in NMR and MRI. The generated athermal spin states can also be exploited for quantum sensing and as probes for many-body…

Purpose: To develop an approach for improving the resolution and sensitivity of hyperpolarized 13C MRSI based on a priori anatomical information derived from featured, water-based 1H images. Methods: A reconstruction algorithm exploiting 1H…

Medical Physics · Physics 2018-11-26 Gil Farkash , Stefan Markovic , Mihajlo Novakovic , Lucio Frydman

Shaped free electron vortices (SEVs) have recently been studied using atomic (1+2) resonance-enhanced multiphoton ionization (REMPI) by oppositely chirped counterrotating circularly polarized (OC-CRCP) femtosecond laser pulses. By…

Atomic Physics · Physics 2025-06-11 D. Köhnke , T. Bayer , M. Wollenhaupt

The objective of this investigation is to synthesize and investigate zero-valent iron (ZVI) nanoparticles (NPs) for bioremediation applications. The ZVI-NPs were fabricated by chemical reduction using a ferrous salt solution with…

Ferroelectric anomalous photovoltaic (APV) effect, as a fascinating physical conceptual phenomenon, holds significant potentials for new optoelectronic device applications. However, due to the knowledge lacking on the origin and underlying…

Materials Science · Physics 2025-09-04 Linjie Wei , Fu Li , Yi Liu , Hongbin Zhang , Junhua Luo , Zhihua Sun

Nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI) suffer from inherently low sensitivity due to the weak thermal polarization of nuclear spins. Parahydrogen-induced polarization (PHIP) offers a powerful route to enhance…

Instrumentation and Detectors · Physics 2025-10-28 Yenal Gökpek , Jan-Bernd Hövener , Andrey N. Pravdivtsev

Halide perovskites are a promising optical gain media with high tunability and simple solution synthesis. In this study, two gain regimes, namely amplified spontaneous emission and random lasing, are demonstrated in same MAPbBr$_3$ halide…

Understanding the mechanisms of UV-induced degradation is crucial for enhancing the UV stability of perovskite solar cells. The UV-driven structural dynamics of CH3NH3PbI3 (MAPbI3) are investigated using real-time TDDFT simulations,…

Materials Science · Physics 2025-12-01 Xin Wen , Zhiyi Yao , Wenzhuo Li , Zhijun Ning , Fan Zheng

$\require{mediawiki-texvc}$ We study accretion disk emission from eight Seyfert $1 - 1.5$ active galactic nuclei (AGN) using far ultra-violet ($1300-1800$ ${\AA}$) slit-less grating spectra acquired with AstroSat/UVIT. We correct for the…

High Energy Astrophysical Phenomena · Physics 2023-06-28 Shrabani Kumar , G. C. Dewangan , K. P. Singh , P. Gandhi , I. E. Papadakis , P. Tripathi , L. Mallick

The ability to steer polariton flow on-demand holds significant promise towards nanophotonic applications and photonic circuitry. Polariton canalization, exhibiting intrinsic collimation and diffractionless transport, emerges as a promising…

Nanodiamond is poised to become an attractive material for hyperpolarized 13C MRI if large nuclear polarizations can be achieved without the accompanying rapid spin-relaxation driven by paramagnetic species. Here we report enhanced and…

Mesoscale and Nanoscale Physics · Physics 2020-04-22 T. Boele , D. E. J. Waddington , T. Gaebel , E. Rej , A. Hasija , L. J. Brown , D. R. McCamey , D. J. Reilly

Antimicrobial photodynamic therapy (APDT) is a promising antibiotic-free strategy for broad-spectrum infection control in chronic wounds, minimising bacterial resistance risks. However, rapid photosensitiser diffusion, tissue staining, side…

Tissues and Organs · Quantitative Biology 2025-02-07 Man Li , Charles Brooker , Rucha Ambike , Ziyu Gao , Paul Thornton , Thuy Do , Giuseppe Tronci