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

Faraday Disk Dynamo01:23

Faraday Disk Dynamo

3.5K
A Faraday disk dynamo is a DC generator, producing an emf that is constant in time. It consists of a conducting disk that rotates with a constant angular velocity in the magnetic field, perpendicular to the disk's plane. The rotation of the disk causes a change in magnetic flux, which induces an emf, causing opposite charges to develop on the rim and in the center of the disk. The polarity of the induced emf can be determined by the direction of the magnetic field and the direction of the...
3.5K
Steady Flow of a Fluid Stream01:27

Steady Flow of a Fluid Stream

669
Consider a control volume, such as a pipe with solid boundaries, through which fluid flows and changes direction due to the impulse exerted by the resulting force from the pipe walls. In steady flow, the mass of fluid entering the control volume at a given time, t, with velocity v1, is equal to the mass leaving after infinitesimal time dt, with velocity v2.
During this process, the momentum of the fluid within the control volume remains constant over the time interval dt. By applying the...
669
Steady, Laminar Flow Between Parallel Plates01:17

Steady, Laminar Flow Between Parallel Plates

787
Understanding steady, laminar flow between parallel plates is essential for analyzing and designing flow in narrow rectangular channels, commonly found in various water conveyance and drainage systems. The Navier-Stokes equations govern fluid motion and are generally challenging to solve due to their nonlinearity. However, simplifications are possible in certain cases, like the steady laminar flow between parallel plates. For this scenario, we assume steady, incompressible, laminar flow.
787
Magnetic Damping01:17

Magnetic Damping

1.0K
Eddy currents can produce significant drag on motion, called magnetic damping. For instance, when a metallic pendulum bob swings between the poles of a strong magnet, significant drag acts on the bob as it enters and leaves the field, quickly damping the motion.
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...
1.0K
Steady, Laminar Flow in Circular Tubes01:23

Steady, Laminar Flow in Circular Tubes

1.0K
Hagen-Poiseuille flow describes a viscous fluid's steady, incompressible flow through a cylindrical tube with a constant radius R. This flow profile is often applied to understand fluid transport in narrow channels, such as capillaries. It serves as a foundational example of laminar flow. In this model, cylindrical coordinates (r,θ,z) are used to describe the radial (r), angular (θ), and axial (z) dimensions within the tube. For Hagen-Poiseuille flow, the velocity profile is purely axial,...
1.0K
Induced Electric Fields01:23

Induced Electric Fields

4.5K
The fact that emfs are induced in circuits implies that work is being done on the conduction electrons in the wires. What can possibly be the source of this work? We know that it’s neither a battery nor a magnetic field, as a battery does not have to be present in a circuit where current is induced, and magnetic fields never do any work on moving charges. The source of the work is in fact an electric field that is induced in the wires. For example, if a stationary conductor is placed in a...
4.5K

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

A Tissue-Compliant Shape-Memory Composite Membrane for Cardiac Occluders.

Bioengineering (Basel, Switzerland)·2026
Same author

Editorial for the Special Issue on Heat Transfer and Fluid Flow in Microstructures.

Micromachines·2026
Same author

The Role of Conducting Polymers in Advancing Organoid Technology: A Perspective on Construction Assessment, Monitoring Devices, and Novel Bioregulation Strategies.

ACS applied materials & interfaces·2026
Same author

Development and validation of a logistic regression model for predicting menstrual irregularity using LDL-C and age in reproductive-aged women: An analysis of NHANES Data.

Medicine·2026
Same author

Biomimetic action-potential transmission via mechano-gated potassium channels assembled by quadruple hydrogen-bonded crown ethers.

Science advances·2026
Same author

From molecular geometry to combustion kinetic model application: <i>ab initio</i> calculations of reaction kinetics between diethyl ether radicals and O<sub>2</sub>.

Physical chemistry chemical physics : PCCP·2025

相关实验视频

Updated: Jan 15, 2026

Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System
08:19

Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System

Published on: May 9, 2021

2.7K

舞蹈电动力学尖端流动调节法拉第不稳定性

Qiyou Liu1, Bingqiang Ji1,2, Yafeng Zou1

  • 1School of Astronautics, Beihang University, Beijing, 100191, P. R. China.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|October 14, 2025
PubMed
概括

研究人员发现了跳舞的电动力学 (EHD) 尖端流动,这是一种精确的微小液滴生成方法. 这种技术为3D打印和药物输送等应用提供了增强的吞吐量和控制.

关键词:
电水动力学打印 电水动力学打印电子喷雾剂是一种电子喷雾剂.法拉第波是什么意思 法拉第波是什么意思这是不稳定的不稳定.尖端流媒体 尖端流媒体

更多相关视频

The Preparation of Electrohydrodynamic Bridges from Polar Dielectric Liquids
10:03

The Preparation of Electrohydrodynamic Bridges from Polar Dielectric Liquids

Published on: September 30, 2014

27.1K
Assembly and Characterization of an External Driver for the Generation of Sub-Kilohertz Oscillatory Flow in Microchannels
08:32

Assembly and Characterization of an External Driver for the Generation of Sub-Kilohertz Oscillatory Flow in Microchannels

Published on: January 28, 2022

2.7K

相关实验视频

Last Updated: Jan 15, 2026

Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System
08:19

Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System

Published on: May 9, 2021

2.7K
The Preparation of Electrohydrodynamic Bridges from Polar Dielectric Liquids
10:03

The Preparation of Electrohydrodynamic Bridges from Polar Dielectric Liquids

Published on: September 30, 2014

27.1K
Assembly and Characterization of an External Driver for the Generation of Sub-Kilohertz Oscillatory Flow in Microchannels
08:32

Assembly and Characterization of an External Driver for the Generation of Sub-Kilohertz Oscillatory Flow in Microchannels

Published on: January 28, 2022

2.7K

科学领域:

  • 流体动力学 流体动力学
  • 微流体学 微流体学
  • 电动力学 电动力学

背景情况:

  • 尖端流产生微/纳米尺度滴滴用于3D打印,纳米材料和药物输送.
  • 高频喷射对于效率至关重要,但难以控制.
  • 电动力学 (EHD) 尖端流动涉及电场下的流体行为.

研究的目的:

  • 报告和阐明跳舞EHD尖端流动与次和弦弹射模式的机制.
  • 为了证明对高频 EHD 尖端流的精确控制.
  • 探索这种现象对按需技术的潜力.

主要方法:

  • 诱导高频电场观察尖端流现象.
  • 分析半径振荡和法拉第不稳定性.
  • 研究法拉第波峰的界面不稳定性.

主要成果:

  • 观测到跳舞的EHD尖端流与亚和弦弹射模式.
  • 阐明了涉及全球半径振荡和局部界面不稳定性的机制.
  • 确定了由法拉第不稳定性和射电压值决定的最佳频率,这些值是由电气波德号决定的.

结论:

  • 跳舞的EHD尖端流提供了可控制的高频微/纳米级滴滴生成方法.
  • 这种现象提高了吞吐量,并使多路径交付成为可能.
  • 这为精密3D打印,纳米材料制造和药物输送系统提供了新的前景.