Results 151 to 160 of about 90,478 (272)

Transmission of Radio‐Frequency Waves and Nuclear Magnetic Resonance in Lanthanum Superhydrides

open access: yesAdvanced Science, EarlyView.
1H NMR and radio‐frequency transmission measurements of lanthanum superhydrides at 165 GPa reveals a transition at 260–280 K by a strong suppression of the signal intensity, significant changes in NMR spectra, including a dramatic decrease of the relaxation rate 1/T1T, and pronounced shielding effect, which may have a superconducting nature.
Dmitrii V. Semenok   +8 more
wiley   +1 more source

潮湿环境下某750 kV架空线路复合绝缘子异常发热分析

open access: yesDianci bileiqi
复合绝缘子较其余绝缘子而言在电气性能方面表现十分优越,且更具经济性,因此现今高压输电线路中采用复合绝缘子占比较高。复合绝缘子虽在大量输电线路中应用时表现优异,但由于复合绝缘子中构成有机复合材料的大分子易断裂,存在易受极端环境影响形成表面污秽,从而降低绝缘子性能的情况。文中对赛某一线某杆塔的异常发热绝缘子进行研究,发现高压端的污秽程度较为严重。进一步研究得出该绝缘子高压端表面污秽严重是由于受到周围高场强强度以及所处片区极端环境湿度骤高双重因素的影响,而高压端周围的场强强度与均压环的安装位置联系紧密 ...
漆思怡   +4 more
doaj  

Growth‐Like Swelling of 2D Precursors for Efficient Fabrication of Complex 3D Microstructures

open access: yesAdvanced Science, EarlyView.
The growth‐like swelling process fills photocured polymers into the elastomeric microstructures, inducing a significant swelling deformation of microstructures that can be maintained in the absence of solvents. The growth‐like swelling process breaks through the dependence of swelling deformation on the solvents, thereby expanding the application of 3D
Xinkai Zhu   +13 more
wiley   +1 more source

Revolutionizing Lithium Metal Anodes With 3D‐Printed Topology‐Optimized Hosts for Enhanced Stability

open access: yesAdvanced Science, EarlyView.
This study presents a topology‐optimized lithium metal anode host fabricated via digital light processing (DLP) 3D printing. The reinforced microstructure provides mechanical stability, suppresses dendrite growth, and accommodates volume changes.
Xin Hu   +5 more
wiley   +1 more source

Wavy‐Interlocked Stretchable Triboelectric Nanogenerators Enhanced by Liquid Metal Microflowers for Self‐Powered Wearable Motion Monitoring

open access: yesAdvanced Science, EarlyView.
Schematic showing a stretchable triboelectric nanogenerator based on interlocked wavy architectures that uses EGaIn microflower‐embedded PVDF‐TrFE and Nylon‐6 nanofiber membranes. The multi‐petaled, electron‐rich EGaIn microflowers enhance interfacial polarization and capacitance, while the interlocked wavy architecture enlarges the effective contact ...
Qianqian Xu   +12 more
wiley   +1 more source

Reconfigurable, Temperature Resilient Phase‐Change Metasurfaces Fabricated via High Throughput Nanoimprinting Lithography

open access: yesAdvanced Science, EarlyView.
ABSTRACT The combination of metasurfaces with chalcogenide phase‐change materials is a highly promising route toward the development of multifunctional and reconfigurable nanophotonic devices. However, their transition into real‐world devices is hindered by several technological challenges. This includes, amongst others, the lack of large area photonic
Carlota de Ruiz de Galarreta   +8 more
wiley   +1 more source

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