Results 101 to 110 of about 4,028,916 (205)

Measured and simulated performance of a ceramic micromechanical beam steering device at 94 GHz [PDF]

, 2008
We report the first experimental demonstration of a transmission-mode micromechanical beam steering device for use in standoff terahertz imaging and spectroscopy.
Drysdale, T.D., Walsby, E.D., Drysdale, T. D., Walsby, E. D., Cumming, D.R.S., Cumming, D. R. S.   +5 more
core   +1 more source

Modal Analysis of Light Propagation, Polarization and Diffraction by Cholesteric Liquid Crystal Layers

Advanced Functional Materials, EarlyView.
The analysis of optical eigenmodes in chiral liquid crystal with perpendicular or tilted helical axis, and their correspondence with the external medium, leads to an intuitive understanding of the angle and wavelength dependency of transmissive and reflective diffraction.
Ke Xu, Pouya Nosratkhah, Le Zhou, Shengzhu Yi, Giorgio Manzoni, Kristiaan Neyts   +5 more
wiley   +1 more source

Multi-Beam Associated Coherent Integration Algorithm for Weak Target Detection [PDF]

Radioengineering
Weak target detection is a great challenging in radar field. To detect the weak targets with beam migration, a novel tri-dimensional time model (i.e. fast time, slow time, and beam time) and a novel tri-dimensional signal model which based on the time ...
X. Rao, Z. Y. Sun, H. H. Tao
doaj  

Comparative Performance and Partial Load Cycling of Sodium‐Metal Chloride Battery Modules With Mixed‐Metal Fe,Zn and Ni,Fe Cells

Advanced Functional Materials, EarlyView.
Sustainable Na‐(Fe,Zn)Cl2 battery modules deliver discharge energies comparable to state‐of‐the‐art Na‐(Ni,Fe)Cl2 batteries through high active‐material utilization, although with lower power capability. Advanced electrochemical characterization reveals a distinct reaction mechanism and low resistance during Fe dechlorination.
Enea Svaluto‐Ferro, William Nash, Robert Zboray, Fabrizio Vagliani, Diego Basso, Alberto Turconi, Andrea Pozzi, Corsin Battaglia, Norbert Weber, Tom Weier, Meike V. F. Heinz   +10 more
wiley   +1 more source

Multi-beam phase mask optimization for holographic volumetric additive manufacturing

The capability of holography to project three-dimensional (3D) images and correct for aberrations offers much potential to enhance optical control in light-based 3D printing. Notably, multi-beam multi-wavelength holographic systems represent an important
Hayden K. Taylor (1657960), Joseph Toombs (11730911), Chi Chung Li (17879141), Vivek Subramanian (1582615)   +3 more
core   +1 more source

Modelling the neutralisation process in neutral beam injectors [PDF]

, 2009
High power neutral beams currently play an important role in heating, fuelling and diagnosing magnetically confined thermonuclear fusion plasmas. At the Joint European Torus (JET) in Oxfordshire, England, the formation of such a beam involves passing a ...
Fitzgerald, Niall J.
core   +1 more source

Design of a Multi-Beam Switching Antenna Loaded with a Square Metasurface

Micromachines
Multi-beam and beam-scanning antennas enable extensive communication coverage while mitigating multipath fading and enhancing spectrum utilization efficiency.
Ningchuan Liu, Lin Huang, Lingxiao Huang
doaj   +1 more source

2D Skeletal Muscle Thin Film Actuators Enhance Efficiency of Biohybrid Robots

Advanced Functional Materials, EarlyView.
2D skeletal muscle thin film actuators generate millinewton‐scale forces and millimeter‐scale strokes while remaining functional for over 30 days. Their force density is 20‐fold higher than 3D skeletal muscle actuators, enabling multi‐fin robots with tunable speed and multidirectional steering.
Maheera Bawa, Arielle Berman, Laura Schwendeman, Ferdows Afghah, Seanbiron Johnson, Ritu Raman   +5 more
wiley   +1 more source

A Multi-Beam Phased Array Receiver Front-End with High Performance Ceramic SiP

Micromachines
This paper presents a compact four-beam dual-polarized phased array with the high performance front-end module based on system-in-package (SiP) technology.
Haifu Zhang, Li-Xin Guo, Shubo Dun, Xiaoming Li, Xiaolong Xu   +4 more
doaj   +1 more source

Microscale Patterning of Ultrahigh‐Viscosity Metallic‐Polymer Composites via Embedded Droplet Writing

Advanced Functional Materials, EarlyView.
A hybrid additive manufacturing platform integrates direct droplet writing of metallic composite with VAT photopolymerization to fabricate architected soft magnetic composites. This approach enables microscale patterning of high‐viscosity materials for programmable actuators, adaptive fluidic devices, and switchable adhesives, offering tunable ...
Yeowon Yoon, Jian Ni, Sungmo Park, Yang Xu, Yong Chen   +4 more
wiley   +1 more source