Results 51 to 60 of about 85,808 (303)

The treatment of geometrically small structures in FDTD by the modification of assigned material parameters [PDF]

open access: yes, 2005
A number of different improvements to the analysis by finite-difference time-domain (FDTD) of small structures, such as wires, strips and slots have been proposed in the literature.
Craddock, IJ   +3 more
core   +2 more sources

Electroactive Metal–Organic Frameworks for Electrocatalysis

open access: yesAdvanced 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

Differentially-Fed, Wideband Dual-Polarized Filtering Antenna With Novel Feeding Structure for 5G Sub-6 GHz Base Station Applications

open access: yesIEEE Access, 2019
In this paper, a differentially fed, wideband dual-polarized patch antenna with filtering response is proposed. A novel E-shaped feeding structure with one end shorted to the ground is proposed to excite a square patch antenna, and an extra resonant mode
Yapeng Li   +3 more
doaj   +1 more source

MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance

open access: yesAdvanced Functional Materials, EarlyView.
Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley   +1 more source

Design of a Planar Transmission Line Balun Based on Novel Phase Inverter

open access: yesIEEE Access, 2020
In this paper, a planar ultrawideband (UWB) transmission line balun based on a novel phase inverter is proposed, which consists of three coaxial connector to double-sided parallel-strip line (DSPSL) transitions, a two-section Wilkinson divider, and a ...
Ya-Qing Yu   +4 more
doaj   +1 more source

VHF/UHF Miniaturized Ferrite-EBG Composited Choke Structures

open access: yesIEEE Access, 2021
Parasitic currents on the sheaths of the coaxial cables will deteriorate the performance of the antenna, so the choke structures are needed. While a-quarter-wavelength choke sheaths at VHF and UHF are very long, miniaturized ferrite-EBG composited choke ...
Dongjie Qin, Baohua Sun
doaj   +1 more source

Fluorescent Nanodiamonds Based Theranostic Platform for pH‐Sensitive Drug Delivery and Quantum Sensing

open access: yesAdvanced Functional Materials, EarlyView.
A multifunctional nanodiamond platform enables pH‐triggered Diazoxide (DZX) delivery and quantum sensing of subcellular radical dynamics in triple‐negative breast cancer cells. Diamond relaxometry revealed reduced lysosomal radicals during DZX‐induced mitochondrial radical elevation, providing insights into redox modulation and organelle‐ resolved ...
Kaiqui Wu   +8 more
wiley   +1 more source

Spin wave emission by spin-orbit torque antennas

open access: yes, 2018
We study the generation of propagating spin waves in Ta/CoFeB waveguides by spin-orbit torque antennas and compare them to conventional inductive antennas.
Adelmann, Christoph   +7 more
core   +2 more sources

Electrically Tunable On‐Chip Topological Photonics with Integrated Carbon Nanotubes

open access: yesAdvanced Functional Materials, EarlyView.
This work demonstrates electrically tunable on‐chip topological THz devices by integrating 2D carbon nanotube (CNT) sheets with valley‐Hall photonic crystals, enabling broadband transmission modulation (71% modulation depth) and tunable narrowband filtering (0.54 GHz shift) through electrically induced thermal tuning. This advancement paves the way for
Jifan Yin   +7 more
wiley   +1 more source

A Wideband Dual-Polarized Antenna Using Planar Quasi-Open-Sleeve Dipoles for Base Station Applications

open access: yesInternational Journal of Antennas and Propagation, 2015
A wideband dual-polarized antenna for WLAN, WiMAX, and LTE base station applications is presented in this paper. The proposed antenna consists of two pairs of orthogonal planar quasi-open-sleeve dipoles along the centerlines, a balanced feeding structure
Guan-xi Zhang, Li Sun, Bao-hua Sun
doaj   +1 more source

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