Results 111 to 120 of about 2,889 (225)

In Situ Atomic‐Scale Observation of Preferential Premelting at Oxide Crystal Defects

open access: yesSmall, Volume 22, Issue 47, 21 August 2026.
Under an external stimulus (e.g., an electron beam irradiation), premelting preferentially initiates at the planar defects in crystalline materials, thereby altering the local atomic and electronic structures. [Correction added on July 21, 2026, after first online publication: The graphical abstract figure has been updated.] ABSTRACT Under certain ...
Zaoli Zhang   +5 more
wiley   +1 more source

Kinetic Control of Crystal Polymorphism via Flash Photonic Heating: Reversible α ↔ β‐Bi2O3 Phase Cycling in Thin‐Film Photoelectrodes

open access: yesSmall Structures, Volume 7, Issue 8, August 2026.
Flash photonic heating achieves unprecedented heating rates of 106–107 °C/s, enabling kinetic control of bismuth oxide polymorphism on FTO–glass substrates. Ultrafast thermal pulses drive melt‐recrystallization pathways that kinetically trap metastable β‐Bi2O3, while conventional processing yields thermodynamically stable α‐Bi2O3.
Shahar Artzi   +7 more
wiley   +1 more source

Decoding Superconductivity in La3Ni2O7−δ Thin Films via Ozone‐Driven Structure and Oxidation Tuning

open access: yesSmall Structures, Volume 7, Issue 8, August 2026.
We demonstrate that superconductivity in La3Ni2O7‐δ thin films correlate with the LNO‐2222 polytype, which must extend coherently across the layer. Conversely, the LNO‐1313 phase disrupts superconductivity, as confirmed by recent studies. Our work highlights the need to stabilize the 2222 phase through optimized growth to achieve robust and ...
Mathieu Flavenot   +8 more
wiley   +1 more source

Exhumed eo‐Alpine High‐Pressure Rocks Fed Campanian Turbidites in Eastern Sardinia

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract This study investigates the detrital record of the early orogenic evolution of the Sardinia‐Calabria system, preserved in Upper Cretaceous arenites exposed in eastern Sardinia. Sardinia and Corsica form a continental block that includes a segment of the Alpine orogen and of its former foreland basin.
Francesco Massari   +5 more
wiley   +1 more source

Petrogenesis and Tectonic Evolution of Cenozoic Magmatism in the Southernmost Northern Andes: Insights From Zircon Petrochronology

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract This study integrates new zircon U–Pb ages, zircon εHf(t)–δ18O isotopic data, and whole‐rock geochemistry to refine the temporal and spatial framework of magmatism in the southern Northern Andes (SNA) from ∼65 to 6 Ma. The San Lucas, Catamayo, Portachuela, and Gonzanamá batholiths and magmatic suites, along with Late Miocene plutons, display ...
J. Iglesias   +14 more
wiley   +1 more source

Vanadium Isotopic Compositions of the High‐3He/4He Baffin Island Lavas

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract The isotopic composition of vanadium (V) in hotspot lavas provides new insight into the source of deep mantle heterogeneities. We measured V isotopic compositions in Paleogene Baffin Island lavas, which erupted above the Iceland plume head, to constrain the mantle plume source. These lavas have V isotopic compositions that are lighter (−0.96 ± 
Jonas Kaare‐Rasmussen   +4 more
wiley   +1 more source

Excimer laser treatment for morphea-lichen sclerosus et atrophicus overlap in a pediatric patient

open access: yesJAAD Case Reports, 2023
Emily Hong, BS   +3 more
doaj   +1 more source

Architecture of the Patrimonio Fault System and the Miocene Post‐Orogenic Extension in Alpine Corsica (France)

open access: yesTectonics, Volume 45, Issue 8, August 2026.
Abstract The exhumation of Alpine Corsica is the result of Oligocene‐Miocene lithospheric back‐arc extension in the wake of the eastward migration of Apenninic subduction. Although the geometry, kinematics and timing of ductile detachments are well constrained, the brittle extension leading to final exhumation of Alpine Corsica is less documented.
Simone Masoch   +7 more
wiley   +1 more source

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