Results 11 to 20 of about 942 (128)
A High-Gain Omnidirectional Broadband Antenna
International Journal of Antennas and PropagationThis study develops a two-element biconical deformed printed dipole omnidirectional antenna comprising a radiating arm, a feed line, and a magnetic ring.
Junjun Wu
doaj +2 more sources
Hybrid data fidelity term approach for quantitative susceptibility mapping. [PDF]
Magn Reson Med, 2022 Purpose Susceptibility maps are usually derived from local magnetic field estimations by minimizing a functional composed of a data consistency term and a regularization term. The data‐consistency term measures the difference between the desired solution and the measured data using typically the L2‐norm.
Lambert M +3 more
europepmc +2 more sources
Development of 3D‐Printed Magnetic Micro‐Nanorobots for Targeted Therapeutics: the State of Art
Advanced NanoBiomed Research, Volume 3, Issue 10, October 2023., 2023 Micro‐/nanorobots show great potential in enabling innovative bio‐applications. The developments in magnetic micro‐/nanorobots regarding their materials, fabrications, actuations, and applications are discussed in this article. Herein, it is aimed to discover the limitations of the existing works and to identify the knowledge gap, thereby deriving ...
Ningning Hu +8 more
wiley +1 more source
3D Acoustofluidics via Sub‐Wavelength Micro‐Resonators
Advanced Functional Materials, Volume 33, Issue 9, February 23, 2023., 2023 3D acoustofluidic micro‐resonators are demonstrated, which are used to generate highly localized and complex acoustic fields. This 3D concept is unique compared to more conventional planar actuation systems, expanding the range of acoustic fields and acoustic patterns that can be produced. This micro‐resonator concept accordingly yields high‐magnitude,
William Sean Harley +4 more
wiley +1 more source
Flux crystal growth of Ba2[(UO2)2Ti2O8]: Structures, spectroscopies and implications
Journal of the American Ceramic Society, Volume 106, Issue 2, Page 1381-1390, February 2023., 2023 We report a flux crystal growth of Ba2[(UO2)2Ti2O8], and subsequent structural and spectroscopic studies using multiple techniques including synchrotron single crystal X‐ray diffraction and X‐ray absorption near‐edge structure spectroscopy. In addition, its vibrational modes and thermal stability were investigated.
Kimbal T. Lu +5 more
wiley +1 more source
IET Microwaves, Antennas &Propagation, Volume 16, Issue 13, Page 798-811, October 2022., 2022 Abstract The simulation of a novel drone‐based near‐field (NF)/far‐field (FF) antenna measurement system enabling the reconstruction of Antenna Under Test (AUT) phase and the true location of the untethered drone using multiple land‐based reference antennas is described.
Clive G. Parini +2 more
wiley +1 more source
A simple cavity method which increases bandwidth of cylindrical dipole antennas to almost 100%
IET Microwaves, Antennas &Propagation, Volume 16, Issue 8, Page 526-536, July 2022., 2022 Abstract A broadband dipole antenna and an integrated cavity section responsible for increasing bandwidth are introduced, designed, and successfully fabricated. This simple and highly effective cavity is added at the dipoles input, where the concentric coaxial feed line becomes its inner conductor, and the dipoles cylinder becomes its outer conductor ...
Amir Sahraei +2 more
wiley +1 more source
Recent Progress in Active Mechanical Metamaterials and Construction Principles
Advanced Science, Volume 9, Issue 1, January 5, 2022., 2022 Active mechanical metamaterials (AMMs) are newly emerged metamaterials in recent decades. Due to the elaborately designed internal micro‐structures and stimuli‐responsive characteristics, AMMs have both the advantages of unusual mechanical properties of mechanical metamaterials and the smart actuation functions of active materials.
Jixiang Qi +10 more
wiley +1 more source
VHF/UHF Wideband Slim Monopole Antenna with Distributed Matching Structures
International Journal of Antennas and Propagation, Volume 2022, Issue 1, 2022., 2022 This paper presents a wideband monopole antenna with distributed matching structures operating on VHF/UHF bands. The antenna consists of a slim rectangular metal strip with a T‐type slot etched on the upper half, two rectangular slots on the lower half, and two rectangular plates soldered with the bottom end of the main strip.
Dongjie Qin, Baohua Sun, Chien-Jen Wang
wiley +1 more source
Nanophotonics, Volume 11, Issue 3, Page 559-570, January 2022., 2022 Abstract Surface‐enhanced Raman spectroscopy (SERS) has been widely investigated and employed as a powerful optical analytical technique providing fingerprint vibrational information of molecules with high sensitivity and resolution. In addition to metallic nanostructure, dielectric micro‐/nano‐structures with extraordinary optical manipulation ...
Yanlin Mi +5 more
wiley +1 more source