Results 121 to 130 of about 244,628 (280)

Superconducting microfabricated ion traps

, 2010
We fabricate superconducting ion traps with niobium and niobium nitride and trap single 88Sr ions at cryogenic temperatures. The superconducting transition is verified and characterized by measuring the resistance and critical current using a 4-wire ...
Chiaverini J., Eric Dauler, Isaac L. Chuang, Jaroslaw Labaziewicz, Karl Berggren, Leibrandt D. R., Shannon X. Wang, Steane A. M., Yufei Ge   +8 more
core   +1 more source

Flexoelectrically Induced Polar Topology in Twisted SrTiO3 Membranes

Advanced Materials, EarlyView.
Twisted SrTiO3 bilayers host polar vortices of flexoelectric origin, revealed through combined experiment and theory. By reconstructing polarization from the toroidal moment of strain gradients, the work establishes a 3D chiral state with broken inversion and mirror symmetries.
Isabel Tenreiro, Hugo Aramberri, Víctor Rouco, Gabriel Sánchez‐Santolino, Mariona Cabero, Fernando Gallego, David Sánchez‐Manzano, José M. González‐Calbet, Federico Mompeán, Mar García‐Hernández, Alberto Rivera‐Calzada, Jorge Íñiguez‐González, Carlos León, Jacobo Santamaría   +13 more
wiley   +1 more source

Application of Machine learning to predict RF heating of cardiac leads during magnetic resonance imaging at 1.5 T and 3 T: A simulation study. [PDF]

J Magn Reson, 2023
Chen X, Zheng C, Golestanirad L.
europepmc   +1 more source

Metamaterial Antennas Enhance MRI of the Eye and Occipital Brain

Advanced Materials, EarlyView.
A radiofrequency antenna platform comprising planar and bend configurations is developed, incorporating structurally integrated epsilon‐negative metamaterial unit cells to enhance MRI. These antennas enable high‐resolution in vivo human MRI of the eye, orbit, and occipital brain. Comprehensive validation, including simulations, phantom experiments, SAR,
Nandita Saha, Bilguun Nurzed, Mostafa Berangi, Andre Kuehne, Helmar Waiczies, Igor Fabian Tellez Ceja, Xiang Hu, Thomas Gladytz, Lisa Krenz, Dave Huebler, Beate Endemann, Claudia Brockmann, Ebba Beller, Oliver Stachs, Thoralf Niendorf   +14 more
wiley   +1 more source

A comparative study of MRI-induced RF heating in pediatric and adult populations with epicardial and endocardial implantable electronic devices. [PDF]

Annu Int Conf IEEE Eng Med Biol Soc, 2022
Jiang F, Bhusal B, Sanpitak P, Webster G, Popescu A, Kim D, Bonmassar G, Golestanirad L.   +7 more
europepmc   +1 more source

Oxygen‐Inhibition Driven Compartmentalization of Dextran Microgels: Toward Fusible Colloidal Biomaterial Inks for 3D Printing

Advanced Materials, EarlyView.
Harnessing oxygen inhibition as a materials design principle enables the universal fabrication of core–shell microgels with tunable radial crosslinking gradients. This conceptually simple yet highly versatile strategy generates fusible colloidal bioinks that combine structural hierarchy with adaptive porosity.
Selin Bulut, Thomas Bissing, Tudor Lile, Hannah Küttner, Daniel Günther, Cédric Bergerbit, Dan Eugen Demco, Laura De Laporte, Andrij Pich   +8 more
wiley   +1 more source

Predicting RF Heating of Conductive Leads During Magnetic Resonance Imaging at 1.5 T: A Machine Learning Approach^. [PDF]

Annu Int Conf IEEE Eng Med Biol Soc, 2021
Zheng C, Chen X, Nguyen BT, Sanpitak P, Vu J, Bagci U, Golestanirad L.   +6 more
europepmc   +1 more source

Electric‐Current‐Assisted Nucleation of Zero‐Field Hopfion Rings

Advanced Materials, EarlyView.
This work reports a novel and efficient nucleation protocol for 3D localized topological magnetic solitons‐hopfion rings in chiral magnets using pulsed electric currents. By using Lorentz transmission electron microscopy and topological analysis, we report characteristic features and extraordinary stability of hopfion rings in zero or inverted external
Xiaowen Chen, Dongsheng Song, Filipp N. Rybakov, Nikolai S. Kiselev, Long Li, Wen Shi, Rui Wu, Xuewen Fu, Olle Eriksson, Stefan Blügel, Rafal E. Dunin‐Borkowski, Haifeng Du, Fengshan Zheng   +12 more
wiley   +1 more source

Evolution of Electrothermal Heating and Dielectric Properties of Phenolic Resins During Pyrolysis

Macromolecular Materials and Engineering
Electrothermal heating generated via radio frequency (RF) fields is used to probe the transformation of phenolic resin to a carbon matrix during pyrolysis.
Aniela J. K. Wright, Smita S. Dasari, Ramu Banavath, Sayyam Deshpande, Ethan M. Harkin, Kailash Arole, Anubhav Sarmah, Micah J. Green   +7 more
doaj   +1 more source

Design of an X-Band Accelerating Structure for the CLIC Main Linac [PDF]

, 2008
The rf design of an accelerating structure for the CLIC main linac is presented. The 12 GHz structure is designed to provide 100 MV/m average accelerating gradient with an rf-to-beam efficiency as high as 27.7 %.
Grudiev, A, Wuensch, W
core