Results 141 to 150 of about 4,959,776 (283)

Stabilizing Oxygen Redox via Li Dopants Into P2‐Type Cathodes for High‐Voltage Sodium‐Ion Batteries

open access: yesAdvanced Science, EarlyView.
Regulating anionic redox of layered cathodes provides the promises as performance promotor for sodium ion batteries. In this work, Li doping strategy has been developed to stabilize oxygen redox in the voltage window from 4.1 to 4.3 V. The underlying mechanism has been investigated through integrating a variety of characterizations.
Peng Dai   +19 more
wiley   +1 more source

Activating Hidden Magnons With Anomalous Rotational Symmetry

open access: yesAdvanced Science, EarlyView.
Unlocking high‐frequency magnons hidden by symmetry constraints is crucial for terahertz technologies. This work demonstrates that breaking local mirror symmetry via Mn‐substitution in the paradigmatic spin–orbit–coupled Mott insulator Ca2${\rm Ca}_2$RuO4${\rm RuO}_4$ activates previously inaccessible mixed‐parity magnons.
Dirk Wulferding   +10 more
wiley   +1 more source

Hierarchical Organization of Biomaterials in the Formation of Photonic Nanostructures

open access: yesAdvanced Science, EarlyView.
Natural organisms create vibrant structural colors through precisely organized nanostructures formed under mild biological conditions. This review explores how cellulose, chitin, corneous beta‐protein, and melanin form complex nanostructures across molecular, mesoscale, and tissue levels.
Sangyeop Kim   +5 more
wiley   +1 more source

Tuning Local Modulus at Liquid Metal‐Polymer Interfaces Regulates Electrocaloric Effect in Ferroelectric Nanocomposites

open access: yesAdvanced Electronic Materials, EarlyView.
Liquid metal nanoparticles create mechanically compliant polymer interfaces that facilitate reversible dipolar reorientation under electric fields, whereas rigid interfaces impose stronger local constraints. This soft–rigid interface comparison reveals local interfacial modulus as a key parameter for tuning electrocaloric entropy change in ...
Tian Yao   +15 more
wiley   +1 more source

Combinatorial Survey of Structural Phase Distribution and Magnetism in Fe‐Ge‐Te Composition‐Spread Thin Film Libraries

open access: yesAdvanced Electronic Materials, EarlyView.
ABSTRACT Magnetic 2‐dimensional (2D) van der Waals (vdW) materials have garnered tremendous attention. The vdW ferromagnet Fe5Ge1Te2 has a Curie temperature Tc of ≈ 270 K, which is tailorable by tuning the stoichiometry and the Fe deficiency to reach room temperature.
Chih‐Yu Lee   +7 more
wiley   +1 more source

Atomic Scale Control of Thermal Conductivity in LaMnO3/SrMnO3 Superlattices

open access: yesAdvanced Electronic Materials, EarlyView.
Interface‐dominated cross‐plane thermal transport in [(LaMnO3)m/(SrMnO3)n]10 superlattices can be controlled by the octahedral rotation/tilt angle φOOR of the MnO6 octahedra, which as well is controlled by the “m/n” ratio. ABSTRACT We report atomic scale structure and phonon thermal transport in (LaMnO3)m/(SrMnO3)n/SrTiO3(100) superlattices (LMO/SMO ...
H. Ulrichs   +12 more
wiley   +1 more source

Complex magnetism in a transition metal nitride. [PDF]

open access: yesNat Commun
Werhahn D   +5 more
europepmc   +1 more source

A Quantitative Lithium Inventory Framework for Anode‐Free Lithium Metal Batteries

open access: yesAdvanced Energy Materials, EarlyView.
A component‐resolved lithium inventory framework quantitatively tracks Li redistribution across the cell in anode‐free NMC622||Cu pouch cells throughout cycling. Three sequential degradation stages are identified: formation‐driven cathode Li depletion, midlife inactive Li0 accumulation, and late‐stage runaway SEI thickening. The cathode, as the sole Li
Wurigumula Bao   +9 more
wiley   +1 more source

Incommensurate Structural and Magnetic Modulations in Potassium-Rich Cryptomelane, K <sub><i>x</i></sub> Mn<sub>8</sub>O<sub>16</sub> (<i>x</i> ≈ 1.45). [PDF]

open access: yesChem Mater
Nagle-Cocco LAV   +11 more
europepmc   +1 more source

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