Results 131 to 140 of about 194,246 (337)

Efficient Noncollinear Second‐Harmonic Generation in Pb(In1/2Nb1/2)O3‐Pb(Mg1/3Nb2/3)O3‐PbTiO3 Crystals Through Domain‐Engineering

open access: yesAdvanced Science, EarlyView.
This study introduces a domain‐engineered PIN‐PMN‐PT ferroelectric crystal that enables efficient broadband second harmonic generation (SHG) without angle or temperature tuning. By engineering a “2T” domain structure, high SHG efficiency is achieved by noncollinear phase matching.
Xin Liu   +8 more
wiley   +1 more source

A Three‐Phase Electrostatic Clutch with Variable Mechanical Impedance Control for Soft Robotic Systems

open access: yesAdvanced Science, EarlyView.
The research introduces a three‐phase electrostatic (ES) clutch with variable mechanical impedance control, specifically designed to enable continuous and precise friction modulation, thereby reducing both force degradation and oscillatory motion. This method effectively resolves conventional ES clutch issues, such as residual charge accumulation and ...
Dongyoung Lee, Heejin Yu, Joonbum Bae
wiley   +1 more source

Facile Synthesis of High Areal Density and Stable Pt Single‐Atom Electrocatalysts by Arc Discharge Atomization and CoNi Trapping

open access: yesAdvanced Science, EarlyView.
This article demonstrates a vacuum direct current arc discharge strategy for synthesizing Pt single‐atom catalysts (SACs) with an ultra‐high Pt areal density. The resulting catalyst shows remarkable thermal stability at 1000 °C and excellent performance in water splitting.
Hongzhe He   +11 more
wiley   +1 more source

Privacy in the telecommunications age [PDF]

open access: bronze, 1992
Carol Wolinsky, James Sylvester
openalex   +1 more source

Stable Ultrabroad‐Absorbing Radical Achieves Efficient NIR‐II Photothermal Conversion via Facile Synthesis

open access: yesAdvanced Science, EarlyView.
A new and stable open‐shell acceptor–donor–acceptor type radical EDOT‐TPAO4 with electronic conductivity of 0.02 S cm−1 is prepared by one‐step with high yield and exhibited unexpected photothermal conversion as one of the best pure organic materials.
Haozhe Zhang   +11 more
wiley   +1 more source

Charge Injection and Transport in an Isoindigo‐Based Polymer Transistor

open access: yesAdvanced Electronic Materials, EarlyView.
This study presents the charge injection and transport properties of field‐effect transistors based on an isoindigo‐bithiophene donor‐acceptor polymer semiconductor contacted with thiolated self‐assembled monolayer (SAM)‐functionalized electrodes. Temperature‐dependent contact characteristics are measured and simulated.
Zuchong Yang   +8 more
wiley   +1 more source

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