Results 121 to 130 of about 67,929 (263)

Low‐Profile, High‐Gain GRIN RF Lenses via Multi‐Material Vat Photopolymerization

Advanced Functional Materials, EarlyView.
We investigate the opportunity of leveraging multi‐material vat photopolymerization printing to manufacture intricate lenses exhibiting permittivity gradients that can increase signal gain in transmitted radiofrequency signals in the X‐ and Ku‐bands. Lenses produced with more distinct low‐loss materials (up to 5) can deliver an 18 dB signal gain with a
Lawrence Romangsuriat, Alexander Peraire‐Bueno, A. John Hart, Randall M. Erb   +3 more
wiley   +1 more source

Design of a Board-Level Integrated Multi-Channel Radio Frequency Source for the Transportable ⁴⁰Ca⁺ Ion Optical Clock

Sensors
As one of the most precise timekeeping instruments ever developed, the optical clock will be used as the measuring equipment for the next generation of second definition. The demand for the miniaturization of optical clocks is progressively urgent.
Bin Wang, Yuanhang Yang, Huaqing Zhang, Ruming Hu, Haicen Mao, Yao Huang, Kelin Gao, Hua Guan   +7 more
doaj   +1 more source

Transfer learning on ultrasound spectrograms of RF signal for diagnosing nonalcoholic fatty liver disease [PDF]

, 2019
Purpose: Nonalcoholic fatty liver disease (NAFLD) is a very common liver disease and affects 20-30% of the world population. The gold standard for diagnosing NAFLD is the liver biopsy.
Chen, Shi
core  

Synergistic Cu‐Fe Interactions Enhance Phase Transformation Kinetics Toward High‐Performance CuFeS2‐Based All‐Solid‐State Batteries

Advanced Functional Materials, EarlyView.
CuFeS2 is found to induce the formation of intermediate phases, highlighting a strong Cu–Fe synergistic effect during conversion reactions in lithium all‐solid‐state batteries (Li‐SSBs). The integrated reaction pathway effectively suppresses phase separation and accelerates reaction kinetics, leading to enhanced electrochemical reversibility and ...
Changjiang Bai, Katherine A. Mazzio, Florian Ruske, Goutham Srinivas, Tim Bernges, Junwei Meng, Xiangping Min, Yanan Sun, Vinita Ahuja, Román Healy Corominas, Volodymyr Baran, Götz Schuck, Michael Haumann, Jürgen Janek, Wolfgang G. Zeier, Philipp Adelhelm   +15 more
wiley   +1 more source

Double‐Interpenetrating Composite Bioink for Multi‐Component 3D Bioprinting and Biofabrication

Advanced Functional Materials, EarlyView.
Marine‐polysaccharides‐derived double interpenetrating network hydrogel‐based bioink, combining the attributes of physical and ionic crosslinking, enables room‐temperature bioprinting of mechanically defined structures that can be handled and are cytocompatible.
Fabian Tribukait‐Riemenschneider, V. Prasad Shastri   +1 more
wiley   +1 more source

Affinity‐Tuned Albumin Hitchhiking Extends the Bioorthogonal Capture Window in Pretargeting Radiotheranostics

Advanced Healthcare Materials, EarlyView.
Pharmacokinetic engineering of clickable radioligands was achieved via albumin hitchhiking approach within a pretargeted radiotheranostics delivery platform. This approach reduced rapid renal elimination, expanded bioorthogonal capture window, boosted tumor uptake by ∼3.5‐fold, and improved the tumor‐to‐liver ratio by ∼6‐fold.
Xie He, Nicholas L. Fletcher, Gayathri R. Ediriweera, Yifei Zhu, James Humphries, Christopher B. Howard, Jiazheng Wang, Craig A. Bell, Kristian Kempe, Kristofer J. Thurecht   +9 more
wiley   +1 more source

Thermal spectrometer for superconducting circuits

Nature Communications
Superconducting circuits provide a versatile and controllable platform for studies of fundamental quantum phenomena as well as for quantum technology applications. A conventional technique to read out the state of a quantum circuit or to characterize its
Christoforus Dimas Satrya, Yu-Cheng Chang, Aleksandr S. Strelnikov, Rishabh Upadhyay, Ilari K. Mäkinen, Joonas T. Peltonen, Bayan Karimi, Jukka P. Pekola   +7 more
doaj   +1 more source

Reliable, Optically Augmented RF Reference Distribution with Femtosecond Stability

State of the art Free Electron Lasers have rigorous electron beam stability requirements. To fulfill these requirements the low-level RF systems rely on a phase stable RF reference.
Ludwig, Frank, Lamb, Thorsten, Schütte, Maximilian, Schulz, Sebastian, Schlarb, Holger, Pryschelski, Heinrich   +5 more
core  

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

M.: Sampling jitter estimation and mitigation in direct RF sub-sampling receiver architecture

, 2009
—The sampling jitter is particularly problematic in systems where high-frequency signals are sampled. This paper addresses the sampling jitter estimation and cancellation task in the direct RF sub-sampling type radio receivers.
Ville Syrjälä, Mikko Valkama
core   +1 more source