Results 101 to 110 of about 11,656 (311)

Chiral Phase Change Nanomaterials

Advanced Functional Materials, EarlyView.
This work demonstrates reversible, non‐volatile phase transitions in chiral Ge2${\rm Ge}_2$Sb2${\rm Sb}_2$Te5${\rm Te}_5$ (GST) nanohelices for high‐speed optical modulation of chirality and dynamic control of the state of polarization (SOP). The chiral nanostructures are fabricated using a highly directional, wafer‐scale physical vapor deposition ...
Joshua A. Burrow, Md Shah Alam, Riad Yahiaoui, Evan M. Smith, Ryan Laing, Jules Gardener, Thomas A. Searles, Piyush J. Shah, Shivashankar Vangala, Joshua R. Hendrickson, Andrew M. Sarangan, Imad Agha   +11 more
wiley   +1 more source

Enhancement of Dielectric Breakdown Strength and Recoverable Energy Density in Three‐Dimensional Heterointerfaces on BaTiO3–PbZrO3–PbTiO3 Films via Room‐Temperature Nano‐Clustering

Advanced Functional Materials, EarlyView.
A room‐temperature aerosol deposition process yields multiphase nano‐clustered dielectric capacitors containing discrete BaTiO3, PbZrO3, and PbTiO3 crystals. This architecture creates three‐dimensional heterointerfaces that induce interfacial charge trapping and effectively inhibit breakdown propagation.
Hyunseok Song, Ke Xu, Donggeon Baek, Dayeong Hur, Minjae Kim, Hyun‐Cheol Song, Dae‐Yong Jeong, Houbing Huang, Jungho Ryu   +8 more
wiley   +1 more source

Oxidized MoS2‐Based Multifunctional Memristive Hardware for Energy‐Efficient mmWave Signal Processing and In‐Memory Matrix Multiplication

Advanced Functional Materials, EarlyView.
Thermally oxidized MoS2‐based radio‐frequency switches enable a multifunctional platform that unifies broadband RF switching and in‐memory computation. The device achieves a cutoff frequency of 33.2 THz with high energy efficiency and supports hardware‐aware signal processing.
Juho Son, Changwoo Pyo, Sungmoon Park, Yoongi Cho, Seungchan Lee, Myungsoo Kim   +5 more
wiley   +1 more source

A novel active equalization scheme for lithium-ion batteries using path planning

Green Energy and Intelligent Transportation
A novel equalization topology based on flexible reconfigurable is proposed to solve the cell inconsistency issues. This topology offers exceptional flexibility, enabling the operation of multiple equalization modes.
Xinghua Liu, Tianyu Ma, Jiaqiang Tian, Tianhong Pan, Xu Zhang, Peng Wang   +5 more
doaj   +1 more source

Reconfigurable ladder switched-capacitor converter

, 2019
The present disclosure relates to a switched-capacitor converter comprising: a first terminal; a second terminal; a switched-capacitor ladder network comprising a plurality of serially connected first capacitors defining a plurality of flying capacitor ...
Muntal, Pere Llimós, Jørgensen, Ivan Harald Holger   +1 more
core  

Zero-current-switching switched-capacitor converters

, 2001
The paper presents a family of zero-current-switching switched-capacitor circuits based on the classical multiswitch switched-capacitor converters. The family of circuits consists of three topologies and provides different voltage conversion ratios.
Cheng, KWE, K.W.E. Cheng
core   +1 more source

Time‐Resolved Magnetization Switching Dynamics Driven by Orbital Torques

Advanced Functional Materials, EarlyView.
Du et al. reveal nanosecond magnetization switching driven by orbital currents using time‐resolved Hall detection. The measurements separate domain nucleation from domain wall propagation and show that Joule heating strongly assists switching by lowering energy barriers.
Ao Du, Shilei Ding, Min‐Gu Kang, Marco Hoffmann, Pietro Gambardella   +4 more
wiley   +1 more source

Low-power switched-capacitor delta-sigma modulator for EEG recording applications

, 2010
This paper presents a third-order single-loop delta-sigma modulator of a biomedical micro-system for portable electroencephalogram (EEG) monitoring applications. To reduce the power consumption, the loop filter of the proposed modulator is implemented by
Chen Jin, Zhang Xu, Chen Hongda
core  

Bandgap‐Engineered AlGaAs/GaAs Heterostructures for Wavelength‐Selective Dual‐Polarity Photoelectrochemistry

Advanced Functional Materials, EarlyView.
Bandgap‐engineered AlGaAs/GaAs heterostructures exhibit wavelength‐selective dual‐polarity photoelectrochemistry, switching from photocathodic to photoanodic response depending on excitation wavelength. The polarity transition is governed by band‐selective absorption, built‐in electric‐field‐driven carrier transport, and interfacial charge‐transfer ...
Yukai Mao, Lipin Chen, Jules Courtin, Siyu Lin, Gangri Cai, Yan Zhu, Yoan Léger, Nicolas Bertru, Jinshi Zhao, Charles Cornet   +9 more
wiley   +1 more source

Open-Loop Switched-Capacitor Integrator for Low Voltage Applications

, 2020
An architecture of a switched-capacitor integrator that includes a charge buffer operating in an open-loop is hereby proposed. As for the switched-capacitor filters, the gain of the proposed integrator, which is given by the input/output capacitor ratio,
Stefano D’Amico, Stefano Marinaci, Peter Pridnig, Marco Bresciani   +3 more
core   +1 more source