Results 131 to 140 of about 254,321 (352)
Sub‐monolayer titania grafted onto mesoporous silica enables solvent‐free photocatalytic upgrading of furfural and cyclopentanone into jet fuel precursors. Advanced spectroscopic methods reveal tunable surface speciation, acidity, and bandgaps, enhancing catalytic efficiency.
Mark A. Isaacs+12 more
wiley +1 more source
Quantum phase transitions and the breakdown of classical general relativity [PDF]
George Chapline
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An additive and initiator‐free photoresin based on a prepolymer decorated with photoreactive step‐growth units as crosslinkers allows for the fabrication of 3D microstructures with strongly disparate mechanical properties ranging from stiff to soft. Abstract Manufacturing three‐dimensional (3D) microstructures with multi‐material properties via two ...
Tugce Nur Eren+7 more
wiley +1 more source
General Relativity and the Divergence Problem in Quantum Field Theory [PDF]
S. Deser
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About the Absolute Analogy Between Electromagnetism and Gravitomagnetism
This study proposes a new formulation of gravitational field dynamics using Maxwell-like equations, thus offering an alternative to Einstein’s general theory of relativity.
Borros Arneth
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This work addresses the challenge of current–voltage asymmetry in scalable laminated semitransparent organic photovoltaics (OPVs) for indoor applications. Vertical stratification of materials is shown to create an energy barrier, leading to performance differences under different illumination directions.
Gulzada Beket+15 more
wiley +1 more source
Indefinite-Metric Quantum Field Theory of General Relativity [PDF]
N. Nakanishi
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In the interface between general relativity and relativistic quantum mechanics, we analyse rotating effects on the scalar field subject to a hard-wall confining potential.
R. L. L. Vitória, K. Bakke
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Quantum Spacetimes from General Relativity?
We introduce a non-commutative product for curved spacetimes, that can be regarded as a generalization of the Rieffel (or Moyal-Weyl) product. This product employs the exponential map and a Poisson tensor, and the deformed product maintains associativity under the condition that the Poisson tensor $Θ$ satisfies $Θ^{μν}\nabla_νΘ^{ρσ}=0$, in relation to ...
openaire +2 more sources
A well‐modulated CeO2/Fe3C heterostructure is successfully constructed. The electron redistribution induced by CeO2 not only enhances the formation energy of Fe vacancies and hinders the dissolution of Fe but also reduces the energy barrier of the ORR.
Peng Wang+8 more
wiley +1 more source