Results 101 to 110 of about 21,239 (224)

Atomic‐Scale Mechanisms of Nucleation and Stabilization in CuCrO2 and CuFeO2 Delafossite Thin Films on Al2O3

Advanced Materials Interfaces, EarlyView.
In this work, a combination of 4D STEM phase reconstructions via iterative electron ptychography, spectroscopy, and conventional STEM imaging reveals detailed insights into the nucleation mechanism for the stable growth of Cu‐based delafossites on Al2O3 using CuCrO2 and CuFeO2 films grown via MBE as examples.
Anna Scheid, Qi Song, Stephanie Ribet, Colin Ophus, Y. Eren Suyolcu, Darrell G. Schlom, Tobias Heil, Peter A. van Aken   +7 more
wiley   +1 more source

Phase Engineering for Enhanced Piezoresponse in P(VDF‐TrFE) and Its Composites

Advanced Materials Interfaces, EarlyView.
As the temperature approaches the Curie point, the crystalline phase in P(VDF‐TrFE) decreases proportionally, while the amorphous phase increases. This shift leads to the formation of more interphase regions. Although spontaneous polarization from crystalline regions decreases, the interphase regions enable additional deformation, thereby enhancing the
Soyun Joo, Yoonah Ko, Rama K. Vasudevan, Seungbum Hong   +3 more
wiley   +1 more source

Efficient and Realistic Brain Simulation: A Review and Design Guide for Memristor‐Based Approaches

Advanced Materials Technologies, EarlyView.
Memristor‐based emulation of Hodgkin‐Huxley neuron models is investigated, by defining the ideal device characteristics needed for accurate ion‐channel representation and reviewing existing works targeting memristive replication of biological realistic neural behavior.
Lennart Paul Liong Landsmeer, Muhammad Ali Siddiqi, Heba Abunahla, Mario Negrello, Said Hamdioui, Christos Strydis   +5 more
wiley   +1 more source

Photoactive Monolayer MoS2 for Spiking Neural Networks Enabled Machine Vision Applications

Advanced Materials Technologies, EarlyView.
Molybdenum disulfide (MoS2) optoelectronic devices are implemented as Leaky Integrate‐and‐Fire (LIF) neurons in spiking neural networks (SNNs), where light‐induced photocurrent dynamics represent potentiation (τd) and depression (τd), emulating neuronal membrane potential.
Thiha Aung, Sindhu Priya Giridhar, Irfan H. Abidi, Taimur Ahmed, Akram AI‐Hourani, Sumeet Walia   +5 more
wiley   +1 more source

Modulating D33 Coefficients Through In Situ AgF and Ag2O Growth in PVDF Composites for High‐Performance Piezoelectric Nanogenerators

Advanced Materials Technologies, EarlyView.
In situ, nanoparticle doping enhances the piezoelectric coefficient (**d₃₃**) of PVDF to ≈12 pC/N, while in situ growth of AgF and Ag₂O dopants increases β‐phase concentration. The nanogenerator achieves a 35 V open‐circuit voltage and 1.6 µA short‐circuit current, powering 10 blue LEDs and charging a 50 nF capacitor within 10 s.
Renjun Liu, Ki Hoon Shin, Yu Zhu, Qing Liu, Bing Ji, Guoxing Sun, Zongjin Li, Dadimuni De Silva, Aisling Stewart, Matteo Lorenzoni, Ingo Ludtke, Oliver A. Williams, Wenlong Ming, Giorgio Divitini, Jung Inn Sohn, Bo Hou   +15 more
wiley   +1 more source

Integrated Ovonic Threshold Switching Selector and Resistive Switching Memory 1S1R in Electrodeposited ZnTe Thin Films

Advanced Materials Technologies, EarlyView.
This study showcases the first‐ever demonstration of ovonic threshold switching (OTS) and resistive switching (RS) in ZnTe thin films fabricated via a fast, cost‐effective electrodeposition method. By controlling the deposition potential, ZnTe film is tuned to demonstrate OTS or RS behaviors, enabling the implementation of one‐selector‐one‐resistor ...
Ayoub H. Jaafar, Haytham Hussein, Tongjun Zhang, Nikolay Zhelev, Neil T. Kemp, Gillian Reid, Kees de Groot, Philip N. Bartlett, Ruomeng Huang   +8 more
wiley   +1 more source

Large Electrogyration Effect in Ferroaxial NiTiO3 at Near Infrared Wavelengths

Advanced Optical Materials, EarlyView.
A large electrogyration effect (electric field‐induced optical rotation) is observed in a ferroaxial crystal NiTiO3 at near infrared wavelengths. The Ni2+ d‐d transitions, featuring strong magnetic dipole character, play an important role in producing the pronounced effect.
Takeshi Hayashida, Koei Matsumoto, Tsuyoshi Kimura   +2 more
wiley   +1 more source

Optical Self‐Tuning of Ferroelectric Metasurfaces Infiltrated with Nematic Liquid Crystals via Photovoltaic Effect

Advanced Optical Materials, EarlyView.
A novel scheme is introduced to achieve optical self‐tuning in ferroelectric lithium niobate (LN) metasurfaces equipped with a thin film of liquid crystals (LCs). The resonant optical field distributions inside the meta‐atoms can induce a photovoltaic (PV) field, which reorients the surrounding LCs.
Atefeh Habibpourmoghadam, Boris N. Chichkov, Antonio Calà Lesina   +2 more
wiley   +1 more source

Antiferrodistortive and Ferroeletric Phase Transitions in Freestanding Films of SrTiO₃. [PDF]

Nano Lett
Leroy L, Huang SW, Chiu CC, Ho SZ, Dössegger J, Piamonteze C, Chen YC, Abreu E, Bombardi A, Yang JC, Staub U.   +10 more
europepmc   +1 more source

Pyroelectric Doping Reversal of MoS₂ p‐n Junctions on Ferroelectric Domain Walls Probed by Photoluminescence

Advanced Optical Materials, EarlyView.
The potential of pyroelectricity for controlling electron doping in monolayer MoS2 on periodically poled LiNbO3 substrates is demonstrated. Pyroelectric charges are shown to convert p‐n into n‐p homojunctions formed in MoS2 on domain walls. The variation in the MoS2 electron density from 300 to 10 K is consistent with the change in the spontaneous ...
Javier Fernández‐Martínez, Joan J. Ronquillo, Guillermo López‐Polín, Herko P. van der Meulen, Mariola O Ramírez, Luisa E. Bausá   +5 more
wiley   +1 more source