相关实验视频

Updated: Mar 1, 2026

Scanning SQUID Study of Vortex Manipulation by Local Contact
06:53

Scanning SQUID Study of Vortex Manipulation by Local Contact

Published on: February 1, 2017

7.4K

集成光学的控制和转向

Jun Mao, Jieshan Huang, Xudong Li

    Optics letters
    |February 27, 2026
    PubMed
    概括

    研究人员开发了一种集成光子电路,用于控制带有轨道角动量 (OAM) 的光束. 这项技术可实现OAM光束的可编程生成,操纵和控制,用于先进的应用.

    更多相关视频

    Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station05:57

    Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

    Published on: April 1, 2020

    8.6K
    Direct Force Measurements of Subcellular Mechanics in Confinement using Optical Tweezers09:56

    Direct Force Measurements of Subcellular Mechanics in Confinement using Optical Tweezers

    Published on: August 31, 2021

    5.6K

    相关概念视频

    Mechanism of Ciliary Motion01:05

    Mechanism of Ciliary Motion

    The ciliary structures were first seen in 1647 by Antonie Leeuwenhoek while observing the protozoans. In lower organisms, these appendages are responsible for cell movement, while in higher organisms, these appendages help in the movement of the extracellular fluids within the body cavities.
    The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
    5.4K
    Conservation of Energy in Control Volume01:14

    Conservation of Energy in Control Volume

    Consider a turbine operating under steady-flow conditions. The control volume is drawn around the turbine, with fluid entering at one point and exiting at another. The turbine extracts energy from the fluid, which performs mechanical work (shaft work).
    For steady flow systems, the time derivative of the stored energy becomes zero since there is no energy accumulation within the control volume. This simplifies the energy equation to:
    1.2K
    Irrotational Flow01:28

    Irrotational Flow

    Irrotational flow is characterized by fluid motion where particles do not rotate around their axes, resulting in zero vorticity. For a flow to be irrotational, the curl of the velocity field must be zero. This imposes specific conditions on velocity gradients. For instance, to maintain zero rotation about the z-axis, the gradient condition:
    1.1K
    Steady, Laminar Flow Between Parallel Plates01:17

    Steady, Laminar Flow Between Parallel Plates

    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.
    925
    Control Systems01:10

    Control Systems

    Control systems are everywhere in contemporary society, influencing diverse applications from aerospace to automated manufacturing. These systems can be found naturally within biological processes, such as blood sugar regulation and heart rate adjustment in response to stress, as well as in man-made systems like elevators and automated vehicles. A control system is essentially a network of subsystems and processes that collaboratively convert specific inputs into desired outputs.
    At the heart...
    1.9K
    Open and closed-loop control systems01:17

    Open and closed-loop control systems

    Control systems are foundational elements in automation and engineering. They are broadly categorized into open-loop and closed-loop systems. These classifications hinge on the presence or absence of feedback mechanisms, significantly influencing the system's performance, complexity, and application.
    An open-loop control system operates without feedback from the output. It consists of two primary elements: the controller and the controlled process. The controller receives an input signal...
    1.8K