Results 81 to 90 of about 394,351 (300)

A Flexible, Wearable, Humidity‐Resistant and Self‐Powered Sensor Fabricated by Chitosan‐Critic Acid Film and its Applications in Human Motion Monitoring and Energy Harvesting

Advanced Sensor Research
Being a resource‐abundant natural material, chitosan shows good frictional electrical properties and has become one of the most used materials for triboelectric nanogenerators (TENGs).
Xing Zhang, Yanran Ma, Yongfa Wang, Li Li, Peihong Wang, Chunchang Wang   +5 more
doaj   +1 more source

Negative refraction in active and passive media: a discussion of various criteria

, 2008
There are three widely-used conditions for characterizing negative refraction in isotropic dielectric-magnetic materials. Here we demonstrate that whilst all the different conditions are equivalent for purely passive media, they are distinct if active ...
Depine, Klar, Lakhtakia, McCall, Shelby, Skaar, Skaar, Stockman, Veselago, Ziolkowski   +9 more
core   +1 more source

Tailoring Functional Properties of Ti–Ni–Cu Shape Memory Alloy Thin Films for MEMS Actuators

Advanced Engineering Materials, EarlyView.
A comprehensive study of critical parameters required to develop well‐performing Ti–Ni–Cu thin film shape memory alloy microactuators is provided. Materials science and device integration aspects are integrated by addressing structural and physical relationships using complementary characterization techniques as well as a practical fabrication solution
Elaheh Akbarnejad, Aleksander Kostka, Gowtham Arivanandhan, Yujiao Li, Alan Savan, Manfred Kohl, Alfred Ludwig   +6 more
wiley   +1 more source

Ionic liquid gating control of RKKY interaction in FeCoB/Ru/FeCoB and (Pt/Co)2/Ru/(Co/Pt)2 multilayers

Nature Communications, 2018
Energy efficient control of magnetization in antiferromagnetic materials is one of the key ingredients for antiferromagnetic spintronics. Here the authors demonstrate voltage control of RKKY interaction and magnetization switching in synthetic ...
Qu Yang, Lei Wang, Ziyao Zhou, Liqian Wang, Yijun Zhang, Shishun Zhao, Guohua Dong, Yuxin Cheng, Tai Min, Zhongqiang Hu, Wei Chen, Ke Xia, Ming Liu   +12 more
doaj   +1 more source

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

Advanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee, Son Tung Mai, Sarath Menon, Braulio Gadiel Sánchez Ortega, Ralf Drautz, Alexander Kauffmann, Gunther Eggeler, Jan Frenzel   +7 more
wiley   +1 more source

Materials with Colossal Dielectric Constant: Do They Exist?

, 2002
Experimental evidence is provided that colossal dielectric constants, epsilon >= 1000, sometimes reported to exist in a broad temperature range, can often be explained by Maxwell-Wagner type contributions of depletion layers at the interface between ...
A. A. Volkov, A. I. Ritus, A. I. Ritus, A. K. Jonscher, A. Loidl, A. P. Ramirez, A. S. Shcheulin, A. Seeger, A. V. Pronin, C. Aebischer, C. C. Homes, C. M. Rey, G. A. Samara, G. Chern, G. Chern, G. P. Mazzara, H. F. Hess, J. B. Shi, J. Sichelschmidt, L. He, M. A. Subramanian, P. B. Littlewood, P. Lunkenheimer, P. Lunkenheimer, P. Lunkenheimer, R. J. Cava, R. J. Wagner, R. S. Nakhmanson, S. R. Elliott, T. F. Rosenbaum, T. G. Castner, T. Portengen, V. Bobnar, V. Bobnar, V. Bobnar   +34 more
core   +1 more source

Dielectric properties of thin insulating layers measured by Electrostatic Force Microscopy [PDF]

, 2010
In order to measure the dielectric permittivity of thin insulting layers, we developed a method based on electrostatic force microscopy (EFM) experiments coupled with numerical simulations.
Alegría, Angel, Arinero, Richard, Colmenero, Juan, De Oteyza, Dimas G., Lévêque, Gérard, Ramonda, Michel, Riedel, Clément, Schwartz, Gustavo Ariel, Tordjeman, Philippe   +8 more
core   +2 more sources

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

Advanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source

Electrostriction coefficient of ferroelectric materials from ab initio computation

AIP Advances, 2016
Electrostriction is an important material property that characterizes how strain changes with the development of polarization inside a material. We show that ab initio techniques developed in recent years can be exploited to compute and understand ...
Z. Jiang, R. Zhang, F. Li, L. Jin, N. Zhang, D. Wang, C.-L. Jia   +6 more
doaj   +1 more source

Cathodic Cage Plasma Deposition of Nanostructured Cu–Fe–Se Coatings on Poly(methyl Methacrylate)

Advanced Engineering Materials, EarlyView.
Nanostructured Cu–Fe–Se coatings are deposited on PMMA by a modified cathodic cage plasma process, enabling low‐temperature deposition on polymer substrates. A transition from discontinuous to compact morphology is observed with temperature, with optimal properties at 200°C, where improved CuFeSe2‐type bonding, lowest sheet resistance, and favorable ...
V. S. S. Sobrinho, M. Naeem, T. H. C. Costa, M. S. Libório, J. C. A. Queiroz, C. B. B. Luna, R. R. M. Sousa, P. S. Vieira, E. M. Araújo   +8 more
wiley   +1 more source