Results 71 to 80 of about 19,980 (256)

Three-dimensional constitutive model for structural and functional fatigue of shape memory alloy actuators [PDF]

, 2018
A three-dimensional constitutive model is developed that describes the behavior of shape memory alloy actuators undergoing a large number of cycles leading to the development of internal damage and eventual catastrophic failure.
CHEMISKY, Yves, Fodil Meraghni, HARTL, Darren J., HARTL, Darren, MERAGHNI, Fodil, Yves Chemisky, Darren J. Hartl   +6 more
core   +1 more source

Achieving High ON State Current through Ferroelectric Polarization‐Dependent Interfacial Resistance Switching in Undoped Orthorhombic HfO2 Films

Advanced Functional Materials, EarlyView.
Ferroelectric tunnel junction devices based on epitaxial undoped ferroelectric HfO2 films demonstrate stable switching endurance of over 106 switching cycles, low write voltages of ±3 V, 16 measured resistance states, and neuromorphic capability.
Markus Hellenbrand, Nuno Estrócio, Ji S. Kim, Babak Bakhit, Marian C. Istrate, Corneliu Ghica, Tiago Rebelo, Nives Strkalj, Abin Varghese, Bernardo Almeida, Luís S. Marques, Bipin Rajendran, Judith L. MacManus‐Driscoll, José P. B. Silva   +13 more
wiley   +1 more source

Microscopic Modeling and Simulation Of Martensite/Austenite Phase Transformations In Shape Memory Alloys [PDF]

, 2014
We simulate the microstructure evolution of a single crystal of a shape memory alloy characterized by N martensite ...
Paolo Biscari, Giovanni Zanzotto, BISCARI, PAOLO, ZANZOTTO, GIOVANNI, Anna Zanzottera, ZANZOTTERA, ANNA, Giuliana Indelicato, INDELICATO, GIULIANA, Marco Urbano   +8 more
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Solution‐Processed Two‐Dimensional Indium Oxide on Sodium‐Embedded Alumina for Reconfigurable Optoelectronic Synaptic Transistors

Advanced Functional Materials, EarlyView.
Wafer‐scale two‐dimensioanl In2Se3 oxidized into InOx on sodium‐embedded beta‐alumina enables multifunctional reconfigurable electronics. Sodium ions accumulate within distinct spatial distribution under drain‐controlle and gate‐controlled operation. Drain‐control operation gives controllability of ultraviolet‐driven optoelectronic synaptic conductance
Jinhong Min, Yonghyun Albert Kwon, Hyunbin Kim, Jihyun Kim, Myeongjin Jung, Jaewon Heo, Gwang Ya Kim, Vlastimil Mazanek, Zdeněk Sofer, In Soo Kim, Jeong Ho Cho, Hyesung Park, Sang Min Won, Joohoon Kang   +13 more
wiley   +1 more source

An intelligent prosthetic hand using hybrid actuation and myoelectric control [PDF]

, 2009
This thesis details the design and development of an intelligent prosthetic hand based on hybrid DC and Shape Memory Alloy (SMA) actuation and controlled by only two myoelectric sensors.
Lau, Beng Guey
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Interplay of Martensitic Phase Transformation and Plastic Slip in Polycrystals [PDF]

, 2013
Inspired by key experimental and analytical results regarding Shape Memory Alloys (SMAs), we propose a modelling framework to explore the interplay between martensitic phase transformations and plastic slip in polycrystalline materials, with an eye ...
Richards, A. W., Bhattacharya, K., Lebensohn, R. A., Richards, Andrew Walter   +3 more
core   +1 more source

Electrode and Microstructure Dependence of Oxygen Diffusion in Ferroelectric Hafnium Zirconium Oxide Thin Films

Advanced Functional Materials, EarlyView.
Significant nanoscale oxygen diffusion coefficient variations are measured in ferroelectric hafnium zirconium oxide films with grain boundaries and electrode interfaces exhibiting values 104 times larger than the grain cores. Overall coefficients are 10X larger for films prepared with metal nitride electrodes compared to refractory metals. New insights
Liron Shvilberg, Thomas W. Pfeifer, Chuanzhen Zhou, Yong Kyu Choi, Duk‐Hyun Choe, Patrick E. Hopkins, Jon F. Ihlefeld   +6 more
wiley   +1 more source

A shape memory alloy energy absorber for backpack design [PDF]

, 2010
Individuals employed in specific recreational, occupational, and military pursuits often carry heavy loads, using variety of pack systems. Recreational hikers and backpackers commonly carry subsistence and comfort items in backpacks.
Li, L, Lau, SML, Chan, K, Chan, Kevin, Li, Lan, Wong, M, Chen, W, Lau, Kin-Tak, Wong, May, Yin, Yan-Sheng, Lau, Sindy Mei-Ling, Yin, YS, Chen, William, Lau, KT   +13 more
core   +1 more source

Integrated Field‐Free SOT Domain‐Wall Synapses and MTJ Stochastic Neurons for Hardware Boltzmann Machines

Advanced Functional Materials, EarlyView.
Field‐free spin‐orbit torque domain‐wall synapses integrated with stochastic MTJ neurons enable compact hardware Boltzmann machines. Leveraging intrinsic stochasticity and multi‐level conductance, the system achieves efficient probabilistic learning with high accuracy, demonstrating a scalable spintronic platform for energy‐efficient edge AI.
Aijaz H. Lone, Meng Tang, Camelia Florica, Bin He, Jingkai Xu, Selma Amara, Georgian Melinte, Xixiang Zhang, Gianluca Setti   +8 more
wiley   +1 more source

Shape memory alloy for aerospace applications [PDF]

reservedUna lega a memoria di forma (LMF, Shape Memory Alloys, SMA, memoria metallica) è una lega metallica che “mantiene la memoria” della sua forma, che riottiene quando viene surriscaldata. Questa proprietà unita all'effetto super elastico degli SMA
EBENAIMINE, OMAR HAKIM
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