Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Electromagnetic Waves in Matter01:30

Electromagnetic Waves in Matter

2.9K
Electromagnetic waves can travel in the vacuum as well as in matter. For example light, which is an electromagnetic wave, can travel through air, water, or glass.
Consider the electromagnetic wave passing through a dielectric medium. In such a case, Maxwell's equations get modified. In Ampere's law, ε0 , the dielectric permittivity of free space is replaced with ε, the permittivity of dielectric. Also, the vacuum permeability μ0 is replaced by the permeability of the...
2.9K
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)01:15

Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)

188
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT) is an advanced Nuclear Magnetic Resonance (NMR) technique specifically designed to detect and enhance the signals of low-abundance nuclei, such as carbon-13 and nitrogen-15, in small molecules. The fundamental principle behind INEPT is the transfer of polarization from a more abundant and highly polarizable nucleus, typically hydrogen-1, to the low-abundance nucleus of interest. This process effectively boosts the NMR signal of the...
188
π Electron Effects on Chemical Shift: Overview01:27

π Electron Effects on Chemical Shift: Overview

1.0K
An applied magnetic field causes loosely bound π-electrons in organic molecules to circulate, producing a local or induced diamagnetic field over a large spatial volume. As the molecules tumble in solution, the field generated by π-electrons in spherical substituents results in a zero net field. However, the net field generated by π-electrons in non-spherical substituents is not zero. The effect of this induced field depends on the orientation of the molecule with respect to B0,...
1.0K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

MOF-Derived FeNi/C Composites Constructed by Controlled Etching for High-Performance Electromagnetic Wave Absorption.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

UHPLC/Q-TOF-MS-based blood-component profiling and multi-omics analysis reveal potential protective mechanisms of Shenzhuo Formula against diabetic kidney disease.

Journal of pharmaceutical and biomedical analysis·2026
Same author

Probing Stage Transition Kinetics in Li-Graphite Intercalation Compounds by Time-Resolved In Situ Solid-State NMR via <sup>13</sup>C Labeling.

Journal of the American Chemical Society·2026
Same author

CDC20 promotes prostate cancer progression via modulating c-MYC and PI3K-AKT signaling.

iScience·2026
Same author

Three-year monitoring study of heavy metal fluxes and accumulation characteristics in mildly contaminated farmland soils of northern Guangdong, China.

Scientific reports·2026
Same author

Enzymatic preparation of luteolin-rich olive (Olea europaea L.) leaf extract and its inhibitory effects on colitis.

Bioorganic chemistry·2026

相关实验视频

Updated: May 16, 2025

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating
10:36

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating

Published on: April 12, 2018

11.3K

电磁波吸收的阳离子高性兴奋剂工程.

Jiaqi Tao1, Yi Yan1, Jintang Zhou2

  • 1College of Materials Science and Technology, Key Laboratory of Material Preparation and Protection for Harsh Environment, Nanjing University of Aeronautics and Astronautics, Nanjing, 211100, China.

Nature communications
|April 2, 2025
PubMed
概括
此摘要是机器生成的。

高性兴奋剂 (HED) 工程推进了吸收电磁波 (EWA) 的材料. 石墨中的阳离子HED通过平衡电荷和优化介电损耗来增强EWA,以最小的材料实现卓越的性能.

更多相关视频

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
13:44

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

15.3K
Flow-assisted Dielectrophoresis: A Low Cost Method for the Fabrication of High Performance Solution-processable Nanowire Devices
09:14

Flow-assisted Dielectrophoresis: A Low Cost Method for the Fabrication of High Performance Solution-processable Nanowire Devices

Published on: December 7, 2017

7.6K

相关实验视频

Last Updated: May 16, 2025

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating
10:36

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating

Published on: April 12, 2018

11.3K
Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
13:44

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

15.3K
Flow-assisted Dielectrophoresis: A Low Cost Method for the Fabrication of High Performance Solution-processable Nanowire Devices
09:14

Flow-assisted Dielectrophoresis: A Low Cost Method for the Fabrication of High Performance Solution-processable Nanowire Devices

Published on: December 7, 2017

7.6K

科学领域:

  • 材料科学 材料科学 材料科学
  • 纳米技术纳米技术
  • 电磁学 电磁学 电磁学 电磁学

背景情况:

  • 高性兴奋剂 (HED) 是一种用于先进材料设计的新策略.
  • 传统的HED主要集中在阴离子兴奋剂上,使电磁波吸收 (EWA) 应用未开发的阳离子HED.
  • 定制EWA机制需要精确控制材料的电子和原子结构.

研究的目的:

  • 探索阴离子HED工程对于优化EWA材料的潜力.
  • 调查阴离子多体相互作用在增强EWA特性中的作用.
  • 开发一种用于在石墨框架中诱导和控制阳离子HED的新方法.

主要方法:

  • 在现场热解与三阶段的溶剂热兴奋剂程序相结合.
  • 在石墨框架内系统诱导阳离子多体相互作用.
  • 电子结构和电荷平衡效应的表征.

主要成果:

  • 阳离子HED通过"定向尾酒效应"精确平衡自由电荷,并通过"定向尾酒效应"创造局部电荷失衡.
  • 这种效应优化介电损失机制,显著提高EWA性能.
  • 实现了7.05 GHz的有效吸收带宽和 -60 dB的最小反射损失,只有7.5%的重量%填充.

结论:

  • 无离子HED工程是开发高性能EWA材料的可行策略.
  • 开发的方法为2D范德瓦尔斯材料的电磁调制提供了新的途径.
  • 这种方法为设计先进的电磁材料提供了一个概念上可扩展的框架.