Results 81 to 90 of about 1,718,501 (292)

The gravitational Compton amplitude from flat and curved spacetimes at second post-Minkowskian order

open access: yesJournal of High Energy Physics
We utilize various computational techniques in flat and curved backgrounds to calculate the classical gravitational Compton amplitude up to the second post-Minkowskian order.
N. Emil J. Bjerrum-Bohr   +3 more
doaj   +1 more source

Conserved vector current in QCD-like theories and the gradient flow

open access: yesJournal of High Energy Physics, 2020
We present analytical results for the Euclidean 2-point correlator of the flavor- singlet vector current evolved by the gradient flow at next-to-leading order O g 2 $$ \left(\mathcal{O}\left({g}^2\right)\right) $$ in perturbatively massless QCD-like ...
Marco Boers, Elisabetta Pallante
doaj   +1 more source

Functional Materials for Environmental Energy Harvesting in Smart Agriculture via Triboelectric Nanogenerators

open access: yesAdvanced Functional Materials, EarlyView.
This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva   +9 more
wiley   +1 more source

Callisto and Europa Gravity Measurements from JUICE 3GM Experiment Simulation [PDF]

open access: gold, 2022
Paolo Cappuccio   +3 more
openalex   +1 more source

Charge‐Induced Morphing Gels for Bioinspired Actuation

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces a novel electroactive actuation mechanism that enables the gel material to generate substantial and reversible shape‐changing while preserving topological and isochoric (volumetric) equivalence. The resultant morphing behaviors can mimic the movements of muscle‐driven organelles in nature, including cilia‐like beating and ...
Ciqun Xu   +4 more
wiley   +1 more source

Gauge Theories of Conformal Gravitation

open access: yes, 2019
In this thesis we investigate the locally scale-invariant theories of conformal and Weyl quadratic gravity, and the ensuing relationship between them. Using a Yang-Mills inspired gauge theory perspective, we derive the actions describing these theories ...
Kuntz, J.
core  

Minimal theory of massive gravity and constraints on the gravitonmass [PDF]

open access: green, 2021
Antonio De Felice   +2 more
openalex   +1 more source

The Effect of Amino Acids on the Formation of Amorphous Calcium Carbonate Nanoparticles

open access: yesAdvanced Functional Materials, EarlyView.
Biomineral formation often proceeds via the assembly of amorphous calcium carbonate (ACC) nanoparticles with narrow size distributions. Using in situ SAXS coupled to a stopped‐flow device, we follow synthetic ACC formation with a 10 ms time resolution and show that amino acids narrow the size distribution at low supersaturation, highlighting their key ...
Lucas Kuhrts   +10 more
wiley   +1 more source

A Biologically‐Architected Wear and Damage‐Resistant Nanoparticle Coating From the Radular Teeth of Cryptochiton stelleri

open access: yesAdvanced Functional Materials, EarlyView.
The ultrahard teeth of mollusks that feed on rocky substrates contain a wear‐resistant coating on their surfaces consisting of densely packed mesocrystalline magnetic nanoparticles within an organic matrix. These coatings display significant hardness and toughness through their highly controlled mesocrystalline architectures.
Taifeng Wang   +7 more
wiley   +1 more source

Study on anisotropic strange stars in Rastall gravity [PDF]

open access: green, 2021
Ines G. Salako   +3 more
openalex   +1 more source

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