Results 31 to 40 of about 1,304,193 (168)

Temperature-induced amorphization in CaCO3 at high pressure and implications for recycled CaCO3 in subduction zones

open access: yesNature Communications, 2019
Subduction of oceanic crust introduces huge amounts of carbonates into Earth’s mantle, contributing to the global carbon cycle. Here, based on high-pressure-temperature experiments, the authors present a reversible temperature-induced transition from ...
Mingqiang Hou   +8 more
doaj   +1 more source

Pressure-driven crystal symmetry and carrier concentration optimization for superior thermoelectric transport properties in layered AgCrSe2 [PDF]

open access: yesMatter and Radiation at Extremes
Phase engineering has proven to be an effective strategy for achieving superior thermoelectric performance, while pressure is an excellent means of expanding the phase space of a material. In this paper, the effect of pressure-induced phase transition on
Zheng Bi   +12 more
doaj   +1 more source

Redox reactions in subducted CaCO3–Fe–SiO2 as a potential source of superdeep diamond inclusions

open access: yesScientific Reports
CaCO3 is one of the most abundant carbonates at the Earth’s surface. It is transported into the mantle in substantial quantities via subducted slabs and participates in the deep mantle carbon cycle along with other mantle materials.
Mengqi Guo   +5 more
doaj   +1 more source

Greatly enhanced mechanical properties of thermoelectric SnSe through microstructure engineering

open access: yesJournal of Advanced Ceramics, 2023
The outstanding thermoelectric material, SnSe, is also known for its inferior mechanical properties, which bring great inconvenience for its application in thermoelectric devices.
Chen Chen   +11 more
doaj   +1 more source

Effect on the Center of Pressure of Vision, Floor Condition, and the Height of Center of Mass During Quiet Standing

open access: yesPhysical Therapy Korea, 2021
Background: Theoretically, balance is affected by the height of center of mass (COM) during quiet standing. However, no one examined this in humans with variables derived from the center of pressure (COP). Objects: We have conducted balance experiment
Seung-su Kim   +2 more
doaj   +1 more source

Unveiling a novel metal-to-metal transition in LuH2: Critically challenging superconductivity claims in lutetium hydrides

open access: yesMatter and Radiation at Extremes
Following the recent report by Dasenbrock-Gammon et al. [Nature 615, 244–250 (2023)] of near-ambient superconductivity in nitrogen-doped lutetium trihydride (LuH3−δNε), significant debate has emerged surrounding the composition and interpretation of the ...
Dong Wang   +17 more
doaj   +1 more source

Two-way tuning of structural order in metallic glasses

open access: yesNature Communications, 2020
While metallic glasses are expected to have tunable structures, these have rarely been demonstrated. Here, the authors combine temperature and pressure to show a two-way structural tuning in rare earth-based metallic glasses beyond the nearest-neighbor ...
Hongbo Lou   +14 more
doaj   +1 more source

Enhancing Mn‐Activated Mechanoluminescence via Pressure‐Regulated Local Structure in Centrosymmetric BaZnOS for Dynamic Response Applications

open access: yesAdvanced Science
Self‐recoverable mechanoluminescence (ML), typically observed in non‐centrosymmetric luminescent materials, has recently been reported in centrosymmetric systems such as Mn‐activated BaZnOS.
Hao Wang   +11 more
doaj   +1 more source

Retention of high-pressure solution-processable metastable phase to ambience via differential sublattice rigidity for broadband photodetectors

open access: yesNature Communications
Materials science exploits only properties that are available at ambience. Therefore, although high-pressure changes the physical state of all condensed matter, most of the extraordinary properties discovered vanish after decompression and cannot be ...
Zhongyang Li   +34 more
doaj   +1 more source

Synthesis of twin-structured nanodiamond particles

open access: yesAIP Advances, 2020
Nanodiamonds represent a burgeoning class of carbon nanomaterials that possess favorable physical and chemical properties useful in abrasives, chemocatalysis, biomedicine, etc. Nowadays, the research on nanodiamonds has developed rapidly, with impressive
Pan Ying   +11 more
doaj   +1 more source

Home - About - Disclaimer - Privacy