Results 91 to 100 of about 11,266 (293)

Resonant Domain Wall Dynamics in a Three‐Dimensional Magnetic Nano Double Helix

Advanced Materials, EarlyView.
3D magnetic nanostructures promise exciting possibilities for magnetization dynamics. However, experimental realizations remain scarce. In nanoprinted cobalt double helices, time‐resolved X‐ray microscopy reveals harmonic domain wall dynamics. Simulations identify the mode and additional higher‐frequency resonances, revealing a rich dynamic landscape ...
Pamela Morales‐Fernández, Iason Konstantinos‐Douveas, Claas Abert, Elina Zhakina, Sandra Ruiz‐Gómez, Claudia Fernández‐González, Luke Alexander Turnbull, Sebastian Wintz, Markus König, Simone Finizio, Markus Weigand, Naëmi Leo, Dieter Suess, Aurelio Hierro‐Rodríguez, Amalio Fernández‐Pacheco, Claire Donnelly   +15 more
wiley   +1 more source

Key distribution scheme of wireless sensor networks based on logic grid

Tongxin xuebao, 2009
Owed to the obvious characters of energy-constraint and dynamic topology, issues including confidentiality, integrality, authentication and no sufficient memory for abundance of key information, needed to be effectively solved in key management technique,
HUANG Hai-ping1, 2, WANG Ru-chuan1, 2
doaj   +2 more sources

PUF-based Key Distribution in Wireless Sensor Networks

Computers, Materials & Continua, 2020
Zheng Zhang, Yanan Liu, Qinyuan Zuo, Lein Harn, Shuo Qiu, Yuan Cheng   +5 more
openaire   +1 more source

Conductive Hydrogels for Exogenous Sensing and Cell Fate Control

Advanced Materials, EarlyView.
We engineer electrically conductive hydrogels by combining sulfated glycosaminoglycans with semiconducting polymers. These hydrogels bind bioactive proteins, including growth factors, whose release or retention can be modulated by low‐voltage stimulation. The hydrogels are also integrated as 3D channels in organic electrochemical transistors as part of
Teuku Fawzul Akbar, Carlos Alejandro Jimenez‐Rodriguez, Railia Biktimirova, Ilka Hermes, Thomas Kurth, My Duyen Pham, Mikhail Tsurkan, Jens Friedrichs, Francis L. C. Morgan, Hans Kleemann, Olga Guskova, Uwe Freudenberg, Peter Fratzl, Carsten Werner, Christoph Tondera, Ivan R. Minev   +15 more
wiley   +1 more source

Distributed KDC-Based Random Pairwise Key Establishment in Wireless Sensor Networks

EURASIP Journal on Wireless Communications and Networking, 2010
Key management is a core mechanism to provide secure and reliable communications in wireless sensor networks (WSNs). In large-scale WSNs, due to the resource constraint on sensor nodes, it is still an extremely challenging task to achieve good ...
Chu Xiaowen, Su Zhong, Jiang Yixin, Ren Fengyuan, Lin Chuang   +4 more
doaj  

Pulsed DC Sputter Deposition of Stable Turbostratic Boron Nitride Thin Films

Advanced Materials Interfaces, EarlyView.
Boron nitride (BN) films are deposited by sputtering from a boron target. During deposition, a substrate bias voltage is applied between the plasma and the sample, which reduces excess boron in the film and enhances the crystallinity. This process prevents the formation of boric acid and ammonium borate hydrate.
Josef Schätz, Michael Krenzer, Tim Schaffus, Martin Otto, Fabian Kühnel, Fabian Streb, Günther Benstetter, Georg S. Duesberg, Stephan Pindl, Max C. Lemme   +9 more
wiley   +1 more source

Radiotherapy Enhancement by Gold Nanocluster‐functionalized Nanoliposomes Using Polychromatic Orthovoltage X‐ray Irradiation

Advanced Materials Interfaces, EarlyView.
Lipid drug carriers to which ultra‐small gold nanoparticles were added enabled more efficient radiotherapy of cultured pancreatic cancer tumors. These nanoparticles boosted radiation‐induced damage to tumors by generating more reactive molecules, though higher gold levels are needed for strong benefits.
Nazareth Milagros Carigga Gutierrez, Eaazhisai Kandiah, Sofia Leo, Erwan Dupont, Fabrizio Johnson‐Corrales, Marc‐André Hograindleur, Sarvenaz Keshmiri, Hélène Elleaume, Benoit Busser, Romain Haudecoeur, Véronique Jacob, Anthony Vella, Véronique Josserand, Maxime Henry, Jean‐Luc Coll, Amandine Hurbin, Xavier Le Guével, Mans Broekgaarden   +17 more
wiley   +1 more source

Secure and transparent data aggregation for wireless sensor networks

Tongxin xuebao, 2012
A secure and transparent data aggregation scheme for wireless sensor networks was proposed.Using hash function and XOR operation,the aggregation node completed the data integrity checking,source identity authentication and data aggregation without ...
Jiang-hong GUO, Jian-feng MA
doaj   +2 more sources

Roadmap to Precision 3D Printing of Cellulose: Rheology‐Guided Formulation, Fidelity Assessment, and Application Horizons

Advanced Materials Technologies, EarlyView.
This critical review presents a comprehensive roadmap for the precision 3D printing of cellulose. Quantitative correlations link ink formulation and rheological properties to print fidelity and final material performance. This framework guides the development of advanced functional materials, from biomedical scaffolds to electromagnetic shielding ...
Majed Amini, Hadi Hosseini, Seyyed Alireza Hashemi, Mohammad Arjmand   +3 more
wiley   +1 more source

Reinforcement Learning-Driven Hunter-Prey Algorithm Applied to 3D Underwater Sensor Network Coverage Optimization

IEEE Access
As one of the key application scenarios of wireless sensor networks, the coverage optimization of underwater wireless sensor networks (UWSNs) requires special consideration of three-dimensional spatial characteristics, which distinctly differs from ...
Zibo Huang, Fangxiu Wang, Chen Su, Yi Wang, Hui Liu   +4 more
doaj   +1 more source