Results 81 to 90 of about 24,780 (252)

Upcycling Compact Discs Into Ultra‐Stable, Flexible, and Stretchable Nanoporous Gold Electrodes for Enhanced Biosensing Performance

Advanced Materials Technologies, EarlyView.
This article highlights the development of robust and high‐performance flexible and stretchable biosensors that maintain long‐term functionality and optimal electrical conductivity under mechanical deformation, utilizing sustainable and cost‐effective manufacturing principles.
Mousa H. Aldosari, Ahyeon Koh
wiley   +1 more source

Full-space magnetic coupling wireless power transfer system and magnetic energy control method

Wireless Power Transfer
In response to the limitations of traditional magnetic coupling wireless power transfer (MC-WPT) systems in multi-degree-of-freedom spatial energy transmission, this paper proposes a full-space MC-WPT system based on a multi-node architecture. The system
Yunfei Guo, Xiangyuan Chen, Xueming Lu, Jijian Meng, Yong Zhang, Hao Tian, Fan Wu   +6 more
doaj   +1 more source

Testing and Simulation of Multilayer Polyvinylidene Fluoride‐Based Piezoelectric Energy Harvester Devices

Advanced Materials Technologies, EarlyView.
The study considers the use of polymer/dielectric‐based multilayers piezoelectric Energy Harvesters (EH) to produce an output voltage and current, by exploiting the mechanical energy provided by human organs movements. In particular, the heart motion is considered from the kinematic viewpoint, and a multiphysics theoretical model is developed to assess
Hamdi Ezzin, Silvia Monchetti, Paolo Emilio Puddu, Luciano Teresi, Antonio DeSimone, Roberto Brighenti   +5 more
wiley   +1 more source

Research on the design method of high isolation and low parasitic parameters for medium-voltage SiC MOSFET driver power supply using wireless power transfer

Wireless Power Transfer
For medium-voltage SiC devices, there is a mutual restraint between the isolation capability and the coupling capacitance of the isolated gate drive power supply. It is the major bottleneck for structural compactness and insulation reliability.
Kai Xiao, Qian Chen, Zhihong Cai, Runmin Zheng, Fengjuan Zhang, Qing Zheng, Hao Feng   +6 more
doaj   +1 more source

Coating‐Free Nanoscratching for Liquid‐Crystal Alignment on PCB‐Compatible Millimeter‐Wave Reflective Unit Cells

Advanced Materials Technologies, EarlyView.
Direct nanoscratching with a 500 nm diamond lapping film creates groove‐guided liquid‐crystal alignment interfaces on PCB‐compatible Cu‐patterned RF substrates within minutes, eliminating polymer coating and high‐temperature baking. The coating‐free process enables optical/molecular alignment validation and voltage‐programmable 28 GHz reflection‐phase ...
Junseok Ma, Ga‐Yeong Park, Geunjung Lee, Hyo‐Won Lee, Jong‐Won Yu, Dong Ki Yoon   +5 more
wiley   +1 more source

Hybrid wireless power transfer: a review

Wireless Power Transfer
Inductive power transfer (IPT) and capacitive power transfer (CPT) have been extensively studied and applied in wireless power transfer (WPT). In the process of system design and analysis, only the characteristics of magnetic or electric fields are ...
Zhongyu Dai, Miao Sun, Hongyuan Chen, Xiaoming Ding, Huihui Wang, Yanhu Zhai, Jie Song, Shuo Ye, Mengxiao Zhang, Xian Zhang   +9 more
doaj   +1 more source

Wood‐Derived Nanocellulose‐Biocarbon Fresnel‐Zone Plate Lenses for Sub‐THz Frequency Applications

Advanced Materials Technologies, EarlyView.
Wood‐derived nanocellulose and lignin‐based biocarbon were combined to fabricate fully bio‐based Fresnel zone plate (FZP) lenses for sub‐terahertz frequencies. These sustainable FZP lenses exhibit low dielectric loss and high directivity, achieving performance comparable to that of metallic references, and remain functional under environmental stress ...
Riikka Haataja, Mikko Kokkonen, Niina Halonen, Sami Myllymäki, Umair Rafique, Mandeep Singh, Ossi Laitinen, Heli Jantunen, Kristiina Oksman, Henrikki Liimatainen   +9 more
wiley   +1 more source

Efficiency enhancement of multi-relay wireless power transfer system using switched compensation capacitors

Wireless Power Transfer
Multi-relay wireless power transfer (WPT) systems are increasingly used in power supply applications for high-voltage transmission line monitoring due to their extended transmission range.
Xinyu Hou, Meiqi Yang, Yong Shi, Zhongming Yu, Zixuan Zhao   +4 more
doaj   +1 more source

Microfabrication of Soft Millirobots Propelled by Low Voltage Electrohydraulic Actuators

Advanced Materials Technologies, EarlyView.
Manual layer‐by‐layer assembly is replaced by wafer‐level MEMS batch fabrication for compliant polymer‐based electrohydraulic actuators. The microfabricated devices integrate sacrificially defined microcavities, Parylene‐C‐sealed inlets, and multilayer polymer–metal films.
Shai Shmulevich, Florian Hartmann, Herbert Shea   +2 more
wiley   +1 more source

Optimal frequency estimation for wireless power transfer systems with an active rectifier

Wireless Power Transfer
Wireless power transfer (WPT) technology, renowned for its reliability and flexibility, is utilized in numerous fields. This article addresses the synchronization of the active rectifier in WPT systems.
Zhigang Zhang, Xiaodong Qing, Yanbao Liu, Tingfa Yang, Danli Chen, Fengwei Chen, Zhao Chen   +6 more
doaj   +1 more source