Results 51 to 60 of about 99,046 (328)

Elucidating Sodium Ion Storage Mechanisms in Hard Carbon Anodes at the Electronic Level

Advanced Functional Materials, EarlyView.
High‐resolution, multi‐frequency continuous wave, and pulsed Electron Paramagnetic Resonance (EPR) spectroscopy uncover the intricate Na ion storage mechanisms in hard carbon. This study reveals the coexistence of Na ion intercalation and solvent co‐intercalation, alongside a subsequent transition of Na ions from ionic to quasi‐metallic to metallic ...
Qingbing Xia, Cheng‐Lin Ko, Emily R. Cooper, Qinfen Gu, Ruth Knibbe, Jeffrey R. Harmer   +5 more
wiley   +1 more source

Modern quantum materials

Frontiers in Materials
Quantum phenomena, including entanglement, superposition, tunneling, and spin–orbit interactions, among others, are foundational to the development of recent innovations in quantum computing, teleportation, encryption, sensing, and new modalities of ...
Vincent G. Harris, Vincent G. Harris, Parisa Andalib   +2 more
doaj   +1 more source

Feasibility Study and Design of a Wearable System-on-a-Chip Pulse Radar for Contactless Cardiopulmonary Monitoring

International Journal of Telemedicine and Applications, 2008
A new system-on-a-chip radar sensor for next-generation wearable wireless interface applied to the human health care and safeguard is presented. The system overview is provided and the feasibility study of the radar sensor is presented.
Domenico Zito, Domenico Pepe, Bruno Neri, Fabio Zito, Danilo De Rossi, Antonio Lanatà   +5 more
doaj   +1 more source

Circuit QED and engineering charge based superconducting qubits

, 2009
The last two decades have seen tremendous advances in our ability to generate and manipulate quantum coherence in mesoscopic superconducting circuits.
Devoret, M H, Girvin, S M, Schoelkopf, R J   +2 more
core   +1 more source

Ionic Metal Poly(heptazine Imides) and Single‐Atoms Interplay: Engineered Stability and Performance for Photocatalysis, Photoelectrocatalysis and Organic Synthesis

Advanced Functional Materials, EarlyView.
Poly(heptazine) imides (PHIs), a crystalline carbon nitride subclass, intercalate metals to deliver high stability, tunable electronics, and efficient charge separation. These features enable solar‐driven applications such as hydrogen evolution, CO₂ reduction, and organic synthesis.
Gabriel A. A. Diab, Izadora F. Reis, Chong Wang, Diandra Barreto, Oleksandr Savateev, Ivo F. Teixeira, Pablo Jiménez‐Calvo   +6 more
wiley   +1 more source

Mask Programmable CMOS Transistor Arrays for Wideband RF Integrated Circuits [PDF]

, 2009
A mask programmable technology to implement RF and microwave integrated circuits using an array of standard 90-nm CMOS transistors is presented. Using this technology, three wideband amplifiers with more than 15-dB forward transmission gain operating in ...
Martinez, Edgar J., Mohammadi, Saeed, Rabieirad, Lelah   +2 more
core   +1 more source

Cu‐Based MOF/TiO2 Composite Nanomaterials for Photocatalytic Hydrogen Generation and the Role of Copper

Advanced Functional Materials, EarlyView.
HKUST‐1/TiO2 composite materials show a very high photocatalytic hydrogen evolution rate which increases as a function of the irradiation time until reaching a plateau and even surpasses the performance of the 1%Pt/TiO2 material after three photocatalytic cycles.
Alisha Khan, Marie Le Pivert, Alireza Ranjbari, Diana Dragoe, Daniel Bahena‐Uribe, Christophe Colbeau‐Justin, Christian Herrero, Dorota Rutkowska‐Zbik, Johnny Deschamps, Hynd Remita   +9 more
wiley   +1 more source

Circularly-polarized 28-GHz antenna for next generations of communication systems

Scientific Reports
A circularly-polarized (CP) printed antenna is proposed for millimeter-wave mobile communications. The antenna has a defected ground structure (DGS), and it operates at 28 GHz.
Rania R. Elsharkawy, Khalid. F. A. Hussein, Asmaa E. Farahat   +2 more
doaj   +1 more source

Híbrido rat-race miniaturizado para la banda ISM 2,4 GHZ

Tecnura, 2014
This paper presents the design, implementation and evaluation of a miniaturized Rat-race hybrid implemented in substrate CER-60 with microstrip transmission lines in a novel space-filling curve.
Sebastián Rodríguez Páez, Arturo Fajardo Jaimes, Carlos Iván Páez Rueda   +2 more
doaj   +1 more source

Superconducting quantum node for entanglement and storage of microwave radiation

, 2014
Superconducting circuits and microwave signals are good candidates to realize quantum networks, which are the backbone of quantum computers. We have realized a quantum node based on a 3D microwave superconducting cavity parametrically coupled to a ...
Flurin, Emmanuel, Huard, Benjamin, Mallet, François, Pillet, Jean-Damien, Roch, Nicolas   +4 more
core   +4 more sources