Results 151 to 160 of about 9,336 (310)

Molecular Assembly Unlocks Dual‐Defect Synergy in Carbon Nitride for Efficient H2O2 Photosynthesis

open access: yesAdvanced Science, EarlyView.
A long‐standing puzzle in making catalysts for hydrogen peroxide is broken. The innovation is a synthesis strategy that creates two synergistic defect sites (cyano defects and N vacancy defects). This synergy enables highly efficient and selective H2O2 production.
Xiaolin Sun   +5 more
wiley   +1 more source

Atomic‐Scale Mechanisms of Multi‐Resistance States in HfOx‐Based RRAM: Evolution of Atomic Electric Fields and Oxygen Vacancies

open access: yesAdvanced Science, EarlyView.
Atomic‐scale mechanisms governing multilevel resistive switching in HfOx‐based RRAM are reveal through advanced TEM. Thermally driven m‐phase rotation ([101]↔[011]) enables selective oxygen vacancy migration, which reconstructs atomic electric fields and dictates conduction—from Schottky/Poole‐Frenkel emission to Ohmic transport.
Wen Sun   +9 more
wiley   +1 more source

Atomic‐Level Structural Characteristics of β‐Relaxation in Metallic Glasses

open access: yesAdvanced Science, EarlyView.
Using in situ synchrotron radiation X‐ray techniques, this study experimentally characterizes β‐relaxation at the atomic scale, linking it explicitly to tricapped trigonal prism (TTP)‐like atomic structures and fast atomic motions. Cyclic heating reveals β‐relaxation as irreversible yet reactivatable through rejuvenation, offering unprecedented insight
Tianding Xu   +7 more
wiley   +1 more source

Wafer‐Scale Bandgap‐Tunable MoS2/PbS Phototransistors Enabled by Solution Processing

open access: yesAdvanced Science, EarlyView.
This work advances bandgap‐tunable MoS2/PbS phototransistors by introducing lateral heterojunctions, which enable superior tunable bandgap (1.24–0.61 eV) via Type‐II alignment. Plasma‐enhanced solution processing ensures uniform 4‐inch wafer‐scale fabrication with 97% yield.
Ziheng Tang   +5 more
wiley   +1 more source

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