Results 191 to 200 of about 284,249 (298)

Electric‐Current‐Induced Phase Transformation in Cu6Sn5 Below Its Equilibrium Transition Temperature

open access: yesAdvanced Science, EarlyView.
Electric current induces a monoclinic‐to‐hexagonal phase transformation in Cu6Sn5 at a measured bulk temperature of ∼120°C, below the equilibrium transition temperature. Ex situ synchrotron x‐ray diffraction, TEM, and matched thermal controls show that current stressing promotes the formation of a retained hexagonal η‐phase post‐stress state not ...
Shih‐kang Lin   +3 more
wiley   +1 more source

Low‐Temperature Annealed Cu/Al Bilayer Architecture for Highly Stable Flexible Metal‐Mesh Transparent Electrodes

open access: yesAdvanced Electronic Materials, EarlyView.
A Cu/Al bilayer design is developed to protect copper metal‐mesh transparent electrodes from oxidation. The ultrathin Al layer self‐passivates into a dense Al2O3 barrier, ensuring excellent stability under harsh conditions. The resulting electrodes combine high conductivity and transparency, enabling reliable operation in flexible touch sensors and ...
Yourong Shu   +11 more
wiley   +1 more source

Global research hotspots and trends in microglia in ischemic stroke. [PDF]

open access: yesFront Immunol
Liu Y   +7 more
europepmc   +1 more source

CsPbBr3–Nanodiamonds Hybrid Wafers for Mechanically Robust, High‐Performance X‐Ray Detection

open access: yesAdvanced Electronic Materials, EarlyView.
NDs‐engineered CsPbBr3 hybrid wafers, fabricated via scalable solid‐state grinding and cold pressing, utilize trace NDs to regulate mechanochemical conversion, promote heterogeneous nucleation, bridge grain boundaries, and passivate interfacial defects. The optimized wafer exhibits dense microstructures, improved charge transport, reduced dark current,
Yanan Gong   +11 more
wiley   +1 more source

Safety of Sodium‐Ion Batteries: Evaluation and Perspective from Component Materials to Cells, Modules, and Packs

open access: yesAdvanced Energy Materials, EarlyView.
This review provides a bottom‐up evaluation of sodium‐ion battery safety, linking material degradation mechanisms, cell engineering parameters, and module/pack assembly. It emphasizes that understanding intrinsic material stability and establishing coordinated engineering control across hierarchical levels are vital for preventing degradation coupling ...
Won‐Gwang Lim   +5 more
wiley   +1 more source

Rational Backbone Planarization for Doping‐Resilient Polymeric Hole Transport Materials Toward Stable and Scalable Perovskite Solar Cells

open access: yesAdvanced Energy Materials, EarlyView.
Incorporating divinylbenzene into PTAA‐based copolymers induces backbone planarization and promotes polaron delocalization, leading to enhanced doping resilience and stabilized electronic structure. The resulting hole‐transport material, PDVB14, maintains robust performance under high dopant concentrations and prolonged device operation, offering a ...
Chanhyeok Kim   +10 more
wiley   +1 more source

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