Articles with "weak field" as a keyword



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Transverse signal decay under the weak field approximation: Theory and validation

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Published in 2018 at "Magnetic Resonance in Medicine"

DOI: 10.1002/mrm.27035

Abstract: To derive an expression for the transverse signal time course from systems in the motional narrowing regime, such as water diffusing in blood. This was validated in silico and experimentally with ex vivo blood samples. read more here.

Keywords: decay weak; signal decay; field approximation; transverse signal ... See more keywords

Design of Metal-Organic Frameworks with Strong and Weak Field Ligands for Fluorescence-Based Segregation of Metal Ion Redox States.

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Published in 2025 at "Inorganic chemistry"

DOI: 10.1021/acs.inorgchem.5c04420

Abstract: Two Cd(II)-succinate-based metal-organic frameworks (MOFs) were synthesized to evaluate the effect of hard/soft nucleophilic centers to identify oxidation states of metals. Here, the MOFs {[Cd(dim)2(H2O)2](suc)(H2O)3}n (1) and {[Cd(2,6-bip)(suc)](xSol)}n (2) were constructed by flexible di(1H-imidazol-1-yl)methane (dim)… read more here.

Keywords: weak field; fluorescence; organic frameworks; metal ... See more keywords

Bridging Carbonyl and Carbyne Complexes of Weak-Field Iron: Electronic Structure and Iron-Carbon Bonding.

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Published in 2024 at "Journal of the American Chemical Society"

DOI: 10.1021/jacs.4c08358

Abstract: Carbon monoxide inhibited forms of nitrogenases have carbonyl (CO) and carbide (C4-) bridges, which are common in synthetic iron complexes with strong-field ligand environments but rare in iron sites with weak-field ligand environments analogous to… read more here.

Keywords: weak field; field; carbon; iron ... See more keywords

Imprints of a gravitational wave through the weak field deflection of photons

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Published in 2024 at "Chinese Physics C"

DOI: 10.1088/1674-1137/ad4e25

Abstract: In this study, we investigate the novel phenomenon of gravitational lensing experienced by gravitational waves traveling past a Schwarzschild black hole perturbed by a specific, first-order, polar gravitational wave. We apply the Gauss-Bonnet theorem, finding… read more here.

Keywords: weak field; gravitational wave; imprints gravitational; black hole ... See more keywords

Quantum-correlation-enhanced weak-field detection in an optomechanical system

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Published in 2019 at "Physical Review A"

DOI: 10.1103/physreva.99.063811

Abstract: We propose a theoretical scheme to enhance the signal-to-noise ratio in ultrasensitive detection with the help of quantum correlation. By introducing the auxiliary oscillator and treated as an added probe for weak field detection, the… read more here.

Keywords: quantum correlation; weak field; field detection; detection ... See more keywords

Weak-field regime of the generalized hybrid metric-Palatini gravity

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Published in 2021 at "Physical Review D"

DOI: 10.1103/physrevd.104.124030

Abstract: João Lúıs Rosa ID , ∗ Francisco S. N. Lobo ID , 3, † and Gonzalo J. Olmo ID4, 5, ‡ Institute of Physics, University of Tartu, W. Ostwaldi 1, 50411 Tartu, Estonia Instituto de… read more here.

Keywords: sica; generalized hybrid; field regime; regime generalized ... See more keywords

Cosserat elasticity as the weak-field limit of Einstein-Cartan relativity

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Published in 2024 at "Physical Review D"

DOI: 10.1103/physrevd.109.104052

Abstract: The weak-field limit of Einstein--Cartan (EC) relativity is studied. The equations of EC theory are rewritten such that they formally resemble those of Einstein General Relativity (EGR); this allows ideas from post-Newtonian theory to be… read more here.

Keywords: weak field; einstein cartan; relativity; limit einstein ... See more keywords

Weak field deflection angle by regular black holes with cosmic strings using the Gauss-Bonnet theorem

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Published in 2019 at "Physical Review D"

DOI: 10.1103/physrevd.99.104075

Abstract: In this paper, we investigate light bending in the spacetime of regular black holes with cosmic strings in weak field limits. To do so, we apply the Gauss-Bonnet theorem to the optical geometry of the… read more here.

Keywords: deflection; field; black holes; regular black ... See more keywords

Dual-Band Ferrite Circulators Operating on Weak Field Conditions: Design Methodology and Bandwidths’ Improvement

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Published in 2020 at "IEEE Transactions on Microwave Theory and Techniques"

DOI: 10.1109/tmtt.2020.2988003

Abstract: This article presents the principle of coupling fundamental and upper eigenmodes of a ferrite cavity for demonstrating a dual-band stripline circulator. The weak field operation is used for increasing circulation bandwidths and choosing the ratio… read more here.

Keywords: band ferrite; dual band; weak field; methodology ... See more keywords

Can Weak Field Lensing Distinguish Between a Naked Singularity, an Ellis-Bronnikov Regular Wormhole and a Black Hole?

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Published in 2020 at "Gravitation and Cosmology"

DOI: 10.1134/s0202289320010089

Abstract: Abstract The purpose of this paper is to investigate if the weak field lensing (WFL) observables can distinguish between three physically distinct lenses, mathematically connected by a combination of real and complex transformations. All three… read more here.

Keywords: field; black hole; field lensing; lensing distinguish ... See more keywords

Visualizing ultrafast weak-field-induced rotational revivals of air molecules at room temperature.

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Published in 2022 at "Optics letters"

DOI: 10.1364/ol.480833

Abstract: The ability to observe quantum coherence and interference is crucial for understanding quantum effects in nonlinear optical spectroscopy and is of fundamental interest in quantum mechanics. Here, we present an experimental study combined with theoretical… read more here.

Keywords: field induced; weak field; rotational revivals; induced rotational ... See more keywords