Results 131 to 140 of about 199,086 (341)

Nonlinear Optical Response in Layer‐Stacked Gallenene with Ferroelectric Polarization

open access: yesAdvanced Materials, EarlyView.
Liquid metals are utilized in applications ranging from soft robotics to conductive inks, owing to their physical properties providing distinct mechanical, electrical, and thermal advantages. This work uses classical material science techniques to characterize ferroelectric polarization in supercooled liquid gallium and utilizes second harmonic ...
Muhammad Yunusa   +17 more
wiley   +1 more source

Interface Topology Driven Loss Minimization in Integrated Photonics: THz Ultrahigh‐Q Cavities and Waveguides

open access: yesAdvanced Materials, EarlyView.
Compact, robust, and ultralow‐loss on‐chip photonic devices are essential for densely integrated photonic chips. Here, the underlying radiation mechanism in topological valley edge states is unveiled and a new methodology of interface topology driven bandgap and wavevector engineering is proposed to thoroughly suppress their radiation losses, thereby ...
Zhonglei Shen   +6 more
wiley   +1 more source

Two‐Stage Bipolaron Formation in Molecularly Doped Conjugated Polymers

open access: yesAdvanced Materials, EarlyView.
This work investigates bipolaron formation in 2,3,5,6‐tetrafluoro‐7,7,8,8‐tetracyanoquinodimethane (F4TCNQ)‐doped conjugated polymer P(g32T‐T) films with glycol sidechains at two stages of both low and high doping levels. At the early stage, bipolarons mainly form from double doping, enhancing structural ordering, and carrier transport.
Rui Su   +17 more
wiley   +1 more source

Polyelectrolytes as a Stable and Tunable Platform for Triboelectric Nanogenerators

open access: yesAdvanced Materials, EarlyView.
Polyelectrolytes (PEs) are introduced as advanced materials for triboelectric nanogenerators, offering precise control over tribopolarity through selective ion fixation. The tunable triboelectric properties and reliable mechanical and thermal stability of PEs enable enhanced output performance and long‐term reliability, establishing a foundation for ...
Hyeonseo Joo   +7 more
wiley   +1 more source

Microstructure Optimization via Grain‐Boundary Segregation to Enhance DC Bias Dielectric Performance of BaTiO3 Multilayer Ceramic Capacitors

open access: yesAdvanced Materials, EarlyView.
By tuning grain size through nanoscale grain‐boundary segregation of single‐element additives, high‐performance BaTiO₃‐based multilayer ceramic capacitors (MLCCs) exhibit exceptionally low dielectric loss over a wide frequency range and excellent thermal stability.
Ji‐Sang An   +5 more
wiley   +1 more source

Highly Efficient Platinum‐Free Photocatalytic Hydrogen Evolution From Low‐cost Conjugated Polymer Nanoparticles

open access: yesAdvanced Materials, EarlyView.
Platinum‐free hydrogen photocatalysis is achieved using dibenzothiophene‐S,S‐sulfoxide‐based conjugated polymers, self‐assembled into nanoparticles via nanoprecipitation. Through side chain engineering and donor–acceptor design, these materials reach a hydrogen evolution rate of 209 mmol g⁻¹ h⁻¹. The structure–function insights presented here establish
Alexandre Holmes   +11 more
wiley   +1 more source

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