Results 81 to 90 of about 679,441 (311)

Functional Recycling and Reuse of Nd–Fe–B Permanent Magnets from Various Waste Streams for a more Sustainable and Resilient Electromobility

Advanced Engineering Materials, EarlyView.
Due to the increasing demand and growing importance of resilient and sustainable supply chains, the use of recycled and reused Nd–Fe–B magnets in e‐mobility applications such as Pedelecs, e‐Scooters, and Hoverboards is being investigated. It can be shown that the corresponding motors with recycled magnets do not exhibit any loss of performance while at
Mario Schönfeldt, Konrad Opelt, Mahmudul Hasan, Michael Gröninger, Dennis Jahnke, Jürgen Gassmann, Oliver Gutfleisch   +6 more
wiley   +1 more source

Compact Uplink Circularly Polarized 2.4GHz Short Backfire Antenna for Geostationary Amateur Radio Satellite Es’Hail-2 (QO-100)

IEEE Open Journal of Antennas and Propagation
This paper describes a compact circularly polarized antenna designed for the 2.4GHz band with a gain of 15dBic designed for communication (uplink) with a geostationary amateur radio satellite Es’Hail-2 (QO-100).
Michal Cerveny, Pavel Hazdra
doaj   +1 more source

Magnetostrictive tactile sensor of detecting friction and normal force for object recognition

International Journal of Advanced Robotic Systems, 2020
Tactile information is valuable in determining properties of objects that are inaccessible from visual perception. A new type of tangential friction and normal contact force magnetostrictive tactile sensor was developed based on the inverse ...
Bing Zhang, Bowen Wang, Yunkai Li, Shaowei Jin   +3 more
doaj   +1 more source

Recent Progress on 2D‐Material‐Based Smart Textiles: Materials, Methods, and Multifunctionality

Advanced Engineering Materials, EarlyView.
Advancements in 2D‐material‐integrated smart textiles are reviewed, with a focus on materials, fabrication methods, and multifunctional applications, including energy harvesting, monitoring, EMI shielding, energy storage, and thermal management. The discussion addresses key challenges and provides insights into the future development of next‐generation
Yong Choi, Jiheon Kim, Jaemin Lee, Xinqi Chen, Byungseok Seo, Wonjoon Choi   +5 more
wiley   +1 more source

Neutralization Line Decoupling Tri-Band Multiple-Input Multiple-Output Antenna Design

IEEE Access, 2020
A pair of tri-band multiple-input-multiple-output (MIMO) antennas with high isolation is investigated in this paper. The proposed antenna consists of two monopole antenna elements with an edge to edge spacing of 4 mm ($0.03~\lambda _{0}$ at 2.3 GHz). The
Ruipeng Liu, Xing An, Hongxing Zheng, Mengjun Wang, Zhenbin Gao, Erping Li   +5 more
doaj   +1 more source

SEISMO-ELECTROMAGNETIC PHENOMENA IN TECTONICALLY ACTIVE REGIONS [PDF]

, 2010
This work presents a research plan that aims to monitor seismo-electromagnetic signals in seismic active regions. Two effects will be considered: electromagnetic field emissions and radio broadcastings.
Bezzeghoud, M., Biagi, P.F., Borges, J.F., Caldeira, B., Manso, M., Reis, A.H., Rosa, R., Salgueira, M.A., Silva, H.G., Tlemçani, M.   +9 more
core  

Electrically Insulating Electromagnetic Interference Shielding Materials: A Perspective

Advanced Functional Materials, EarlyView.
Developing electromagnetic interference (EMI) shielding materials with inherent electrical insulation and high EMI shielding effectiveness is challenging but important for electronic applications. This perspective summarizes the recent advancements in designing electrically insulating EMI shielding materials and discusses the underlying mechanisms of ...
Ji Liu, Valeria Nicolosi
wiley   +1 more source

Illustration of the Impedance Behaviour of Extremely Low-Profile Coupled Shorted-Patches Antennas for UHF RFID of People

International Journal of Antennas and Propagation, 2014
The recently introduced coupled shorted-patches technique for the design of extremely low-profile UHF RFID tag antennas is used to illustrate the flexibility of selected feeding methods for tuning the antenna input impedance for the complex values ...
Milan Svanda, Milan Polivka
doaj   +1 more source

Environmentally Stable and Highly Crystalline MXenes for Multispectral Electromagnetic Shielding up to Millimeter Waves

Advanced Functional Materials, EarlyView.
This study presents excellent EMI shielding effectiveness of highly crystalline HC‐Ti3C2Tx MXene, characterized by high electrical conductivity, outstanding environmental stability, and facile processability, across a multispectral frequency range from 100 kHz to 110 GHz. It is revealed that increasing the thickness and electrical conductivity of MXene
Aamir Iqbal, Jisung Kwon, Tufail Hassan, Sang Woon Park, Won‐Hee Lee, Jung‐Min Oh, Junpyo Hong, Juyun Lee, Shabbir Madad Naqvi, Ujala Zafar, Seon Joon Kim, Jong Hyuk Park, Myung‐Ki Kim, Chong Min Koo   +13 more
wiley   +1 more source

Seasonal Variations of Polarization Diversity Gain in a Vegetated Area considering High Elevation Angles and a Nomadic User

International Journal of Antennas and Propagation, 2015
Seasonal variations of the polarization diversity gain are addressed for a nomadic user in a vegetated area taking high elevation angles and nongeostationary satellites into consideration. Corresponding experimental data were obtained at a frequency of 2.
Milan Kvicera, Pavel Pechac
doaj   +1 more source