Results 21 to 30 of about 345,268 (272)

Fish Scale for Wearable, Self-Powered TENG

Nanomaterials
Flexible and wearable devices are attracting more and more attention. Herein, we propose a self-powered triboelectric nanogenerator based on the triboelectric effect of fish scales.
Liwei Zhao, Jin Han, Xing Zhang, Chunchang Wang   +3 more
doaj   +1 more source

Dielectric mixtures -- electrical properties and modeling [PDF]

IEEE Trans. on Dielectrics and Electrical Insulation, vol.9 No.5, pp809-828, 2002., 2001
In this paper, a review on dielectric mixtures and the importance of the numerical simulations of dielectric mixtures are presented. It stresses on the interfacial polarization observed in mixtures. It is shown that this polarization can yield different dielectric responses depending on the properties of the constituents and their concentrations.
arxiv   +1 more source

Hydrogel‐Based Capacitive Sensor Model for Ammonium Monitoring in Aquaculture

Advanced Engineering Materials, EarlyView.
Traditional techniques for monitoring aquaculture water quality, particularly ammonium levels, harm fish. This work presents a novel capacitive sensor with an ionic hydrogel transducer to monitor ammonium concentration in real time based on the ammonium‐induced hydrogel dissociation and osmotic pressure. Monitoring aquaculture water quality, especially
Mohammad Mirzaee, Mahdi Askari‐sedeh, Ali Zolfagharian, Mostafa Baghani   +3 more
wiley   +1 more source

Oxygen-vacancy-ordering-induced metal-insulator transition in MgO single crystals

Results in Physics, 2022
Dielectric properties of MgO single crystal were investigated in the temperature range of 300–1100 K and frequency range of 4x101-106 Hz. The sample exhibits intrinsic dielectric response below 400 K, two oxygen-vacancy-related phase transitions around ...
Chao Cheng, Wenjun Cao, Shouguo Huang, Youmin Guo, Yi Yu, Dongping Qiao, Chunchang Wang   +6 more
doaj  

Current Trends and Future Perspective for Cold Spray Metal‐Ceramic Composites

Advanced Engineering Materials, EarlyView.
The use of cold spray (CS) technology for creating cermet deposits, combining ceramic and metallic components, is advancing rapidly. Cermets offer excellent temperature handling and erosion resistance for diverse applications. This review outlines the current state of the art, focusing on the deposition dynamics and strategies to optimize the ...
Romario A. Wicaksono, Amir Ardeshiri Lordejani, Sara Bagherifard   +2 more
wiley   +1 more source

Room-temperature-densified H3BO3 microwave dielectric ceramics with ultra-low permittivity and ultra-high Qf value

Journal of Materiomics, 2020
With the rapid development of mobile communication technology towards 5G and 6G, the microwave dielectric materials with ultra-low permittivity and ultra-high Qf value are urgently demanded.
Wen Bin Hong, Lei Li, Han Yan, Shu Ya Wu, Hang Sheng Yang, Xiang Ming Chen   +5 more
doaj  

Effect of Temperature on Creeping Flashover Voltage of Nanofilled Oil-Pressboard Insulation

IEEE Access, 2020
Creeping flashover (surface discharge) at oil-pressboard interface is considered a serious failure of the insulation system in power transformers. In this paper, creeping flashover voltage at oil-pressboard interface using the concept of nanofluids is ...
Mohamed E. Ibrahim, Alyaa A. Nassar, Mohamed A. Izzularab, Amr M. Abd-Elhady   +3 more
doaj   +1 more source

Thermal Casimir effect between random layered dielectrics [PDF]

Phys. Rev. A 79, 040101(R) (2009), 2009
We study the thermal Casimir effect between two thick slabs composed of plane-parallel layers of random dielectric materials interacting across an intervening homogeneous dielectric. It is found that the effective interaction at long distances is self averaging and is given by a description in terms of effective dielectric functions.
arxiv   +1 more source

Comparative Wear and Friction Analysis of Sliding Surface Materials for Hydrostatic Bearing under Oil Supply Failure Conditions

Advanced Engineering Materials, EarlyView.
Hydrostatic bearings excel in high‐precision applications, but their performance hinges on a continuous external supply. This study evaluates various material combinations for sliding surfaces to mitigate damage during supply failures or misalignment and to discover the most effective materials identified for enhancing the reliability and efficiency of
Michal Michalec, Lukáš Daněk, Jan Foltýn, Petr Svoboda, Carsten Gachot, Martin Hartl, Ivan Křupka   +6 more
wiley   +1 more source

Density functional investigations on electronic structures, magnetic ordering and ferroelectric phase transition in multiferroic Bi2NiMnO6

AIP Advances, 2012
Using the full-potential linearised augmented-plane wave (FP-LAPW) method based on density functional theory (DFT), we have investigated the electronic structures, the magnetic behavior, and the ferroelectric origin of multiferroic Bi2NiMnO6.
Hong Jian Zhao, Xiao Qiang Liu, Xiang Ming Chen   +2 more
doaj   +1 more source