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相关概念视频

Convolution: Math, Graphics, and Discrete Signals01:24

Convolution: Math, Graphics, and Discrete Signals

244
In any LTI (Linear Time-Invariant) system, the convolution of two signals is denoted using a convolution operator, assuming all initial conditions are zero. The convolution integral can be divided into two parts: the zero-input or natural response and the zero-state or forced response, with t0 indicating the initial time.
To simplify the convolution integral, it is assumed that both the input signal and impulse response are zero for negative time values. The graphical convolution process...
244

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One example on how colloidal nano- and microparticles could contribute to medicine.

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Multifunctional reconfigurable terahertz metasurface based on vanadium dioxide phase transition: achieving broadband absorption and efficient polarization conversion.

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相关实验视频

Updated: Jun 24, 2025

Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation
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使用修改的离散卷积矩阵方法进行光学制造的停留时间.

Ximing Liu, Longxiang Li, Xingchang Li

    Applied optics
    |June 10, 2024
    PubMed
    概括
    此摘要是机器生成的。

    准确的停留时间计算对于精密光学至关重要. 经过修改的矩阵方法提高了表面残余精度,提高了超精密元件制造.

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    Fabrication and Operation of a Nano-Optical Conveyor Belt
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    相关实验视频

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    科学领域:

    • 光学和材料科学 材料科学
    • 制造业 工程 制造工程
    • 计算科学 计算科学

    背景情况:

    • 准确的停留时间计算对于在制造光学关键元件时的误差趋同至关重要.
    • 离散卷积矩阵方法虽然被广泛使用,但由于非统一的工具路径中的近似误差存在局限性.

    研究的目的:

    • 为超精密光学元件制造开发更准确的停留时间计算方法.
    • 解决现有方法在处理不统一的工具路径方面的局限性.

    主要方法:

    • 引入一个修改的矩阵元素方法.
    • 介绍各种工具路径离散的Voronoi多边形面积重量计算形式.
    • 机制的分析和通过数值模拟进行验证.

    主要成果:

    • 修改后的方法显著改善了表面残留物的均分布.
    • 在计算表面残留物方面获得了更高的准确性.
    • 与传统方法相比,该方法显示出更高的错误收率.

    结论:

    • 修改矩阵元素方法为停留时间计算提供了更准确的方法.
    • 这种提高的精度对于制造超精密光学元件至关重要.
    • 这些发现为先进的光学制造工艺提供了指导原则.