Results 171 to 180 of about 438,655 (299)

O Radical‐Induced n‐to‐p Transition in PbS Quantum Dots Enabling Enhanced and Stable Photogating in QD/IGZO SWIR Phototransistors

open access: yesAdvanced Materials Technologies, EarlyView.
An O radical‐induced n‐to‐p transition in PbS quantum dots (QDs) is achieved via atmospheric Ar/O2 treatment, enabling favorable band alignment and stable photogating in PbS QD/IGZO phototransistors. Interfacial defect passivation and Fermi‐level modulation, confirmed by XPS and UPS analyses, effectively suppress dark current, induce a positive VTH ...
MD Redowan Mahmud Arnob   +4 more
wiley   +1 more source

Defect‐Engineered ZnO Nanowire Arrays for Flexible Room‐Temperature Hydrogen Sensors

open access: yesAdvanced Materials Technologies, EarlyView.
Fabrication process of patterned ZnO nucleation sites on a flexible polyimide (PI) substrate. Top/tilted‐view SEM images of ordered ZnO nanoflower arrays confined within patterned circular regions. AFM topography map with height data revealing a disk‐array structure, where the patterned regions (marked by a red dot circle) are elevated by ∼2 µm ...
Jun‐Ting Wang   +7 more
wiley   +1 more source

Programmable Variable‐Stiffness Multilayer Elastomer Composites With High‐Aspect‐Ratio Low‐Melting‐Point Alloy Inclusions

open access: yesAdvanced Materials Technologies, EarlyView.
High‐aspect‐ratio low‐melting‐point alloy inclusions are embedded within multilayer silicone laminates to create thermally programmable stiffness. Sequential activation of alloy‐rich layers produces four distinct mechanical states and reconfigures tendon‐driven actuator trajectories under the same load.
Palpolage Don Shehan Hiroshan Gunawardane   +4 more
wiley   +1 more source

Numerical analysis of pile group, piled raft, and footing using finite element software PLAXIS 2D and GEO5. [PDF]

open access: yesSci Rep, 2023
Chimdesa FF   +8 more
europepmc   +1 more source

Acetylene Functionalization of Multiple‐Resonant Materials Enabling Strong Two‐Photon Absorption and Delayed Luminescence With Highly Efficient Exciplex‐Sensitized Electroluminescence

open access: yesAdvanced Optical Materials, EarlyView.
Multiple‐resonance thermally activated delayed fluorescent (MR‐TADF) material absorbs two near‐infrared 760 nm photons with cross‐section up to 156 GM, emit 26 nm narrowband green light at 491 nm with unity luminescence quantum yield and electroluminescence efficiency up to 25.2% in organic light‐emitting diode.
Ikechukwu D. Nwosu   +12 more
wiley   +1 more source

Cascading Spin‐Orbitronic Terahertz Emission in Ferromagnet/Nonmagnet Bilayers

open access: yesAdvanced Optical Materials, EarlyView.
While the initial generation mechanism of picosecond orbital currents remains elusive, we reveal a cascading spin–orbital transport mechanism that induces optically driven terahertz emission in ferromagnet/nonmagnet heterostructures. Using a ferromagnet with strong spin–orbit coupling, we identify a thickness‐driven transition from spin‐dominated to ...
Younghun Kim   +7 more
wiley   +1 more source

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