Results 71 to 80 of about 82,143 (281)

Ferroelectric behavior and spectroscopic properties of La-Modified lead titanate nanoparticles prepared by a sol-gel method

open access: yesHeliyon, 2020
The sol-gel method was used to prepare perovskite type (Pb1-1.5x Lax□0.5x)TiO3 (PLT) ceramics with x = 0.21, 0.22, 0.23, 0.24, 0.25 in order to investigate their structural, optical, and dielectric properties.
M. Mostafa   +3 more
doaj   +1 more source

An Adaptive Inhibitory WSe2 Transistor for Retinomorphic In‐Sensor Image Processing

open access: yesAdvanced Functional Materials, EarlyView.
Conventional retinomorphic devices typically require deliberate gate‐bias tuning for each illumination condition. In this paper, we demonstrate an adaptive inhibitory WSe2 transistor that uses photo‐induced regime shift between the subthreshold and accumulation modes to achieve decision‐free, intensity‐adaptive image processing within a single pixel ...
Juhwan Baek   +12 more
wiley   +1 more source

Aging effect evolution during ferroelectric-ferroelectric phase transition: A mechanism study

open access: yesAIP Advances, 2013
Aging can significantly modify the dielectric, piezoelectric, and ferroelectric performance of ferroelectrics. However, little attention has been paid to the aging effect during ferroelectric-ferroelectric phase transitions that is essentially correlated
Zuyong Feng   +3 more
doaj   +1 more source

Lone‐Pair‐Induced Lattice Distortion in Lead‐Free Hybrid Perovskites for High‐Performance Nanogenerators

open access: yesAdvanced Functional Materials, EarlyView.
A lead‐free tin‐based hybrid perovskite is designed in which stereochemically active lone‐pair electrons on tin distort the crystal lattice and break its symmetry. Blended into a flexible polymer, the material converts pressure into electricity at milliwatt‐scale power density and continues working far below freezing, powering a commercial wristwatch ...
Majid Haji Bagheri   +12 more
wiley   +1 more source

Neuromorphic Devices for Extreme Environments: State‐Variable Reliability and Stabilization Strategies

open access: yesAdvanced Functional Materials, EarlyView.
Neuromorphic devices for extreme environments are interpreted through the physical states that store and process information. Radiation, temperature extremes, and vacuum can perturb vacancies, filaments, trapped charges, polarization, interfaces, and readout signals.
Taehyun Park   +7 more
wiley   +1 more source

Superior disrupting ferroelectric phase of (Ba Sr)Nb2O6 tungsten bronze structure via high entropy and cations disorder for ultrahigh breakdown strength

open access: yesScientific Reports
High configurational entropy (ΔS) dielectric ceramics possess a unique competitive advantage in electronic applications due to their high-power density and excellent reliability.
Marwa Kamal   +2 more
doaj   +1 more source

Periodically-arrayed ferroelectric nanostructures induced by strain concentration in SrTiO3

open access: yesNihon Kikai Gakkai ronbunshu, 2019
Ferroelectric behavior in mechanically strained SrTiO3 nanoporous is investigated using phase-field models. We find, in the paraelectric nanoporous, periodically arrayed ferroelectric nano-region is formed due to strain concentration, namely ...
Kairi MASUDA   +3 more
doaj   +1 more source

Deterministic control of ferroelectric polarization by ultrafast laser pulses

open access: yesNature Communications, 2022
Controlling the electric polarization in ferroelectric materials at room temperature is an important aspect in the design of novel ferroelectric-based devices.
Peng Chen   +4 more
doaj   +1 more source

An investigation of the photocatalytic properties of lithium niobate and barium titanate [PDF]

open access: yes, 2012
Efficiency of particulate semiconductors for driving photocatalytic reactions is impractically low due to the recombination of excited carriers and intermediate species at the interface.
Stock, Matt
core   +4 more sources

Exceptional Electro‐Optic Coefficient Unlocked via Polarization Swaying in KNbO3 Thin Films

open access: yesAdvanced Functional Materials, EarlyView.
We present the largest reported electro‐optic response in any material to date, guided by a new design principle that exploits ultralow coercive field polarization swaying enabled by low‐symmetry ferroelectric phases in monoclinic KNbO3 thin films for energy‐efficient classical and quantum photonic integrated circuits. ABSTRACT The electro‐optic effect
Sankalpa Hazra   +11 more
wiley   +1 more source

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