Results 191 to 200 of about 816,543 (343)
“Writing” Crystal Phases in Amorphous Calcium Carbonate via Laser‐Induced Patterned Transformations
Advanced Functional Materials, EarlyView.Laser‐induced crystallization enabling the patterning of amorphous calcium carbonate into various distinct phases is introduced. This approach provides spatial control over polymorph selection, both crystalline and amorphous, inspired by biomineralization pathways.
Hadar Shaked +6 more
wiley +1 more source
Accretion around black holes: The geometry and spectra. [PDF]
iScience, 2022 Liu BF, Qiao E.
europepmc +1 more source
Strong gravitational lensing effects around rotating regular black holes
Physics Letters BIn this letter, we investigate the strong gravitational lensing effects around two classes of rotating regular black holes, which behave as non-singular Minkowski core at the center.
Ming-Yu Guo +4 more
doaj
AdS4 black holes with nonlinear source in rainbow gravity
Physics Letters B, 2020 We explore new four-dimensional black holes, with the Einstein-Λ theory coupled to nonlinear electrodynamics, in an energy-dependent spacetime. By considering the power-law model of nonlinear electrodynamics and solving the coupled field equations, with ...
M. Dehghani
doaj
The study of supermassive black holes has significantly advanced our understanding of galaxy structures, yet fundamental questions remain, particularly concerning the structure and dynamics of massive black holes. This article addresses the core structure of massive black holes, defined as those originating from supernova events.
openaire +1 more source
Optical Control of Ferroelectric Imprint in BiFeO3
Advanced Functional Materials, EarlyView.Above‐bandgap irradiation at room temperature enables on‐demand optical control of defect‐driven built‐in electric fields in BiFeO₃ thin films, fabricated via scalable, chemical spray pyrolysis. These fields, otherwise “frozen‐in,” can cause severe device degradation, including non‐switchable polarization, dead layers near interfaces, and polarization ...
Haoze Zhang +8 more
wiley +1 more source
Don't be afraid of black holes: Vacuum sponge and vacuum stent treatment of leaks in the upper GI tract-a case series and mini-review. [PDF]
Front Surg, 2023 Schäfer C.
europepmc +1 more source