関連する実験動画

Updated: Jul 9, 2026

Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene
08:44

Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene

Published on: August 22, 2017

非ヘルミシアン型アディアバティック波動法に基づくフルベクトルモードソルバー

Junhe Zhou, Yuekai Zhang, Chengwen Huang

    Optics express
    |February 20, 2026
    PubMed
    まとめ

    この研究では,非ヘルミシアン型アディアバティック波動理論を用いた効率的な光学波導体モード解き方を紹介しています. この方法は,計算時間を大幅に短縮しながら,様々な波導体構造の高精度を維持します.

    さらに関連する動画

    Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations13:56

    Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations

    Published on: October 12, 2019

    Computation of Atmospheric Concentrations of Molecular Clusters from ab initio Thermochemistry12:11

    Computation of Atmospheric Concentrations of Molecular Clusters from ab initio Thermochemistry

    Published on: April 8, 2020

    関連する概念動画

    Real Gases: Effects of Intermolecular Forces and Molecular Volume Deriving Van der Waals Equation04:01

    Real Gases: Effects of Intermolecular Forces and Molecular Volume Deriving Van der Waals Equation

    Thus far, the ideal gas law, PV = nRT, has been applied to a variety of different types of problems, ranging from reaction stoichiometry and empirical and molecular formula problems to determining the density and molar mass of a gas. However, the behavior of a gas is often non-ideal, meaning that the observed relationships between its pressure, volume, and temperature are not accurately described by the gas laws.
    π Molecular Orbitals of 1,3-Butadiene01:24

    π Molecular Orbitals of 1,3-Butadiene

    Conjugated dienes have lower heats of hydrogenation than cumulated and isolated dienes, making them more stable. The enhanced stabilization of conjugated systems can be understood from their π molecular orbitals.
    The simplest conjugated diene is 1,3-butadiene: a four-carbon system where each carbon is sp2-hybridized and has an unhybridized p orbital that contains an unpaired electron. According to molecular orbital theory, atomic orbitals combine to form molecular orbitals such that the number...
    Vector Algebra: Method of Components01:08

    Vector Algebra: Method of Components

    It is cumbersome to find the magnitudes of vectors using the parallelogram rule or using the graphical method to perform mathematical operations like addition, subtraction, and multiplication. There are two ways to circumvent this algebraic complexity. One way is to draw the vectors to scale, as in navigation, and read approximate vector lengths and angles (directions) from the graphs. The other way is to use the method of components.
    In many applications, the magnitudes and directions of...
    Van der Waals Equation01:10

    Van der Waals Equation

    The ideal gas law is an approximation that works well at high temperatures and low pressures. The van der Waals equation of state (named after the Dutch physicist Johannes van der Waals, 1837−1923) improves it by considering two factors.
    First, the attractive forces between molecules, which are stronger at higher densities and reduce the pressure, are considered by adding to the pressure a term equal to the square of the molar density multiplied by a positive coefficient a. Second, the volume...
    Differential Form of Maxwell's Equations01:17

    Differential Form of Maxwell's Equations

    James Clerk Maxwell (1831–1879) was one of the significant contributors to physics in the nineteenth century. He is probably best known for having combined existing knowledge of the laws of electricity and the laws of magnetism with his insights to form a complete overarching electromagnetic theory, represented by Maxwell's equations. The four basic laws of electricity and magnetism were discovered experimentally through the work of physicists such as Oersted, Coulomb, Gauss, and Faraday.
    The Van der Waals Equation01:26

    The Van der Waals Equation

    The ideal gas law is based on two simplifying assumptions: first, that there are no intermolecular attractions between gas molecules, and second, that the volume occupied by the molecules themselves is negligible compared with the volume of the container. However, these assumptions don't hold up under all conditions - specifically, at high pressures and low temperatures, as gas tends to deviate from ideal gas behavior.The van der Waals equation is an enhanced version of the ideal gas law,...