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Fluid Mosaic Model01:19

Fluid Mosaic Model

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Scientists identified the plasma membrane in the 1890s and its principal chemical components (lipids and proteins) by 1915. The model for plasma membrane structure, proposed in 1935 by Hugh Davson and James Danielli, was the first model to be widely accepted in the scientific community. The model was based on the plasma membrane's "railroad track" appearance in early electron micrographs. Davson and Danielli theorized that the plasma membrane's structure resembled a sandwich...
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The Fluid Mosaic Model01:34

The Fluid Mosaic Model

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The fluid mosaic model was first proposed as a visual representation of research observations. The model comprises the composition and dynamics of membranes and serves as a foundation for future membrane-related studies. The model depicts the structure of the plasma membrane with a variety of components, which include phospholipids, proteins, and carbohydrates. These integral molecules are loosely bound, defining the cell’s border and providing fluidity for optimal function.
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Couette Flow01:22

Couette Flow

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Couette flow represents the flow of fluid between two parallel plates, with one plate fixed and the other moving with a constant velocity. This configuration allows for a simplified analysis using the Navier-Stokes equations, which govern fluid motion under conditions of viscosity and incompressibility. For Couette flow, the assumptions include a steady, laminar, incompressible flow with a zero-pressure gradient in the flow direction. This flow type is beneficial for understanding shear-driven...
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Steady, Laminar Flow Between Parallel Plates01:17

Steady, Laminar Flow Between Parallel Plates

131
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.
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Bewley Lattice Diagram01:12

Bewley Lattice Diagram

520
The Bewley lattice diagram, developed by L. V. Bewley, effectively organizes the reflections occurring during transmission-line transients. It visually represents how voltage waves propagate and reflect within a transmission line, making it easier to understand the complex interactions that occur.
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Laminar and Turbulent Flow01:07

Laminar and Turbulent Flow

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Fluid dynamics is the study of fluids in motion. Velocity vectors are often used to illustrate fluid motion in applications like meteorology. For example, wind—the fluid motion of air in the atmosphere—can be represented by vectors indicating the speed and direction of the wind at any given point on a map. Another method for representing fluid motion is a streamline. A streamline represents the path of a small volume of fluid as it flows. When the flow pattern changes with time, the...
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Updated: Jun 4, 2025

Demonstration of a Hyperlens-integrated Microscope and Super-resolution Imaging
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Demonstration of a Hyperlens-integrated Microscope and Super-resolution Imaging

Published on: September 8, 2017

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ハイドロダイナミックモアール超網

Guoqiang Xu1, Xue Zhou2, Weijin Chen1

  • 1Department of Electrical and Computer Engineering, National University of Singapore, Kent Ridge, Singapore, Republic of Singapore.

Science (New York, N.Y.)
|December 19, 2024
PubMed
まとめ
この要約は機械生成です。

研究者たちは 流体の中で周期的な渦を作り モイレの超網を形成しました 彼らはエネルギー移転と局所化現象を観察し,エネルギーと質量輸送の潜在的制御のための水力動力学的メタマテリアルのモアール物理を実証しました.

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Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes
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Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes

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Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
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Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

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関連する実験動画

Last Updated: Jun 4, 2025

Demonstration of a Hyperlens-integrated Microscope and Super-resolution Imaging
10:01

Demonstration of a Hyperlens-integrated Microscope and Super-resolution Imaging

Published on: September 8, 2017

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Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes
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Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes

Published on: May 23, 2017

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Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
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Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

Published on: July 20, 2022

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科学分野:

  • 流体力学
  • 凝縮物質物理学
  • メタマテリアル

背景:

  • フォトニック結晶は,トポロジックとモアール物理学にとって重要な構造周期性を示します.
  • 流体における低シーア・モジュールは,光子結晶に匹敵する安定した空間周期性の形成を阻害する.
  • 水力ダイナミックメタマテリアルは 調節可能な流体構造を実現するための 潜在的プラットフォームを提供します

研究 の 目的:

  • 流体における空間的周期性を創造し制御する可能性を調査する.
  • 流体系におけるモアレ現象を 周期的な渦構造を 積み重ねて回転させることで探求する.
  • 流動的なモアール超格子内のエネルギー移転と局所動態を理解する.

主な方法:

  • 水力ダイナミックメタマテリアルの周期的な渦の製造
  • 2つの渦流層を積み重ねて回転させることで2層のモエール超網を構成する.
  • エネルギー輸送現象の分析は,様々な回転角度と格子構成で行われます.

主要な成果:

  • 水力ダイナミックメタマテリアルの周期的な渦を成功裏に実現し,流動的なモアール超網を形成しました.
  • ピタゴラスの三角形と非ピタゴラスの三角形に相当する,異なるエネルギー移転と局所化行動が観察された.
  • ピタゴラスの三倍を満たす大きな格子定数を持つ相応のモアレ流体における異常なエネルギー局在が報告された.

結論:

  • 流体系におけるモアレ現象の出現を示し,以前の制限に挑戦した.
  • 流動的なモアール超網を使って エネルギー転送,質量輸送,粒子ナビゲーションを制御する新しい方法を確立した.
  • 設計された渦の相互作用を通して 流体力学とエネルギー輸送を操作する 新しい道を開いた