Results 61 to 70 of about 30,437 (345)
Electroactive Metal–Organic Frameworks for Electrocatalysis
Advanced Functional Materials, EarlyView.Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska +7 more
wiley +1 more source
Compact Antenna for Through-the-Earth Mine Communication
ElectricaThis research paper presents a planar Archimedean spiral antenna design for through-the-earth (TTE) mine communication. A study has been conducted to analyze the effect of factors such as depth, radial distance, loop antenna current, loop antenna radius,
Anjini Kumar Tiwary +2 more
doaj +1 more source
Magnetic Control of Chiral Hybridized Phonon Magnetic Moments in Ferrimagnets Fe2‐xZnxMo3O8
Advanced Functional Materials, EarlyView.Helicity‐resolved magneto‐Raman spectroscopy reveals magnetic control of chiral phonon magnetic moments in polar ferrimagnet (ZnxFe2−xMo3O₈). Large spontaneous zero‐field phonon splittings, selective phonon–magnon coupling, and asymmetric Zeeman responses demonstrate that phonon chirality is governed by magnon‐phonon coupling and magnetization.
Youngsu Choi +8 more
wiley +1 more source
Design of Beam-Forming Networks for Fermat Spiral Antenna Arrays
TechnologiesThis paper presents a novel design technique using beam-forming networks based on CORPS (coherently radiating periodic structures) technology to achieve the simplification of the feed network of Fermat spiral antenna arrays.
Kleiverg Encino +4 more
doaj +1 more source
Single-Arm Archimedean Spiral Antenna with Broadband Circular Polarization
International Journal of Antennas and Propagation, 2021 In this paper, a single-arm Archimedean spiral (SAAS) antenna with broadband circular polarization is investigated. Unlike traditional single-arm Archimedean spiral antenna, the antenna arm consists of a hybrid meandered strip line and a smooth arc strip
Qingyuan Fang, Mengzhe Jin, Weidong Liu
doaj +1 more source
Fabrication and Mathematical Modeling of SWCNT Scaffold DNA Spiral Nantenna [PDF]
, 2015 DNA origami based spiral structure is synthesized to realize a nanoscale spiral antenna for biomedical applications. Single strand DNA (ssDNA) origami structures utilize self-assembly techniques and short ssDNA staples to develop the desired spiral ...
Alsharani, Ahmed +4 more
core
The equiangular spiral antenna
IRE Transactions on Antennas and Propagation, 1959 A circularly polarized antenna is described which makes possible bandwidths that a few years ago were considered to be impossible. The design of the antenna is based upon the simple fundamental principle that if the shape of the antenna were such that it could be specified entirely by angles, its performance would be independent of wavelength.
openaire +2 more sources
Advanced Functional Materials, EarlyView.Here, we present a high‐density PEDOT eutectogel electrode array for enhanced body surface gastric mapping. Silver electrodes are blade‐coated onto flexible substrates, followed by electrogelation of PEDOT:PSS and the deposition of a PEDOT:LS eutectogel.
Christopher Slaughter +8 more
wiley +1 more source
Improved detection scheme for chipless RFIDs using prolate spheroidal wave function-based noise filtering [PDF]
, 2011 A novel, highly sensitive scheme to detect the resonance peaks in the spectrum of chipless RFID signals is presented. The detection is based on finding the zeros in the derivative of the group delay of the received signal.
Dullaert, Wouter +2 more
core +2 more sources