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

Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

14.5K
Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
14.5K
Displacement Current01:19

Displacement Current

3.8K
Ampère's law, in its usual form, does not work in places where the current changes with time and is not steady. Thus, Maxwell suggested including an additional contribution, called the displacement current, Id, to the real conduction current I.
3.8K
Position and Displacement01:31

Position and Displacement

25.6K
The position of an object defines its location relative to a convenient frame of reference at any particular time. A frame of reference is an arbitrary set of axes from which the position and motion of an object are described. Earth is often used as a frame of reference, and we often describe the position of an object as it relates to stationary objects on Earth. For example, a rocket launch could be described in terms of the position of the rocket with respect to Earth as a whole. On the other...
25.6K
Imaging Biological Samples with Optical Microscopy01:18

Imaging Biological Samples with Optical Microscopy

10.1K
Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
10.1K
Position and Displacement Vectors01:00

Position and Displacement Vectors

12.8K
To describe the motion of an object, one should first be able to describe its position (where it is at any particular time). More precisely, the position needs to be specified relative to a convenient frame of reference. A frame of reference is an arbitrary set of axes from which the position and motion of an object are described. Earth is often used as a frame of reference to describe the position of an object in relation to stationary objects on Earth.
Further, several important kinds of...
12.8K
Significance of Displacement Current01:27

Significance of Displacement Current

5.9K
A displacement current is analogous to a real current in Ampère's law, participating in Ampère's law the same way as the usual conduction current. However, it is produced by a changing electric field. Displacement current is defined in terms of a time-varying electric field, and also has an associated displacement current density. By adding a term accounting for displacement current, Maxwell modified the existing Ampère's law, which is now called generalized Ampère's law.
5.9K

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

Convolutional Neural Network for Specimen-Invariant Structural Health Monitoring of FRC Under Flexural Loading.

Sensors (Basel, Switzerland)·2026
Same author

PIPTO: Precise Inertial-Based Pipeline for Threshold-Based Fall Detection Using Three-Axis Accelerometers.

Sensors (Basel, Switzerland)·2023
Same author

Triple-Band Single-Layer Rectenna for Outdoor RF Energy Harvesting Applications.

Sensors (Basel, Switzerland)·2021
查看所有相关文章

相关实验视频

Updated: Jan 29, 2026

Three-dimensional Optical-resolution Photoacoustic Microscopy
08:31

Three-dimensional Optical-resolution Photoacoustic Microscopy

Published on: May 3, 2011

18.9K

光学显微镜用于高分辨率的IPMC位移测量.

Dimitrios Minas1, Kyriakos Tsiakmakis1, Argyrios T Hatzopoulos1

  • 1Department of Information and Electronic Engineering, International Hellenic University (IHU), 57400 Thessaloniki, Greece.

Sensors (Basel, Switzerland)
|January 28, 2026
PubMed
概括
此摘要是机器生成的。

本研究介绍了一种低成本的光学系统和跟踪算法,用于精确测量离子聚合物金属复合材料 (IPMC) 执行器中的微位移. 该系统可以实时监控和检测水环境中的故障.

关键词:
电子电路 电子电路 电子电路微位移测量的测量光学移位传感器的光学移位传感器提示跟踪算法 提示跟踪算法

更多相关视频

Micron-scale Resolution Optical Tomography of Entire Mouse Brains with Confocal Light Sheet Microscopy
09:49

Micron-scale Resolution Optical Tomography of Entire Mouse Brains with Confocal Light Sheet Microscopy

Published on: October 8, 2013

17.2K
A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
08:23

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings

Published on: September 30, 2019

6.7K

相关实验视频

Last Updated: Jan 29, 2026

Three-dimensional Optical-resolution Photoacoustic Microscopy
08:31

Three-dimensional Optical-resolution Photoacoustic Microscopy

Published on: May 3, 2011

18.9K
Micron-scale Resolution Optical Tomography of Entire Mouse Brains with Confocal Light Sheet Microscopy
09:49

Micron-scale Resolution Optical Tomography of Entire Mouse Brains with Confocal Light Sheet Microscopy

Published on: October 8, 2013

17.2K
A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
08:23

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings

Published on: September 30, 2019

6.7K

科学领域:

  • 材料科学与工程 材料科学与工程
  • 机器人和控制系统 机器人和控制系统
  • 光学计量学 在光学计量学

背景情况:

  • 离子聚合物金属复合材料 (IPMC) 执行器广泛用于软机器人和生物医学设备.
  • 精确测量微位移对于理解和优化IPMC性能至关重要.
  • 现有的测量技术可能是昂贵的,复杂的,或不适合水环境.

研究的目的:

  • 开发一个集成的,低成本的系统,用于测量水环境中的IPMC执行器的小位移.
  • 为了实现高分辨率,实时监控执行器运动.
  • 为IPMC系统实施可靠的故障检测.

主要方法:

  • 一个定制的光学设置,使用显微镜,USB摄像头和LED背光照明,用于高对比度的侧视图成像.
  • 一个基于网格的预测跟踪算法,结合边缘检测,哈里斯角和几何约束来定位尖端.
  • 专门的电子电路用于监控供电和负载条件,检测故障,如过电/不足电压和短路/开放电路.

主要成果:

  • 显微镜系统提供~0.53μm/像素的空间采样,透镜扭曲最小.
  • 追踪算法在30fps的频率下达到~99%的检测准确度,用于低于2Hz的执行频率.
  • 电子电路在3个小时的运行中成功检测到100%的注入故障,没有虚假触发器.

结论:

  • 拟议的系统提供了一个紧的,可重现的,高分辨率的替代激光或数字图像关联技术.
  • 该框架适用于在水下或具有挑战性的环境中对IPMC位移的表征.
  • 该技术可以扩展到其他微位移传感应用.