Jove
Visualize
お問い合わせ
JoVE
x logofacebook logolinkedin logoyoutube logo
JoVEについて
概要リーダーシップブログJoVEヘルプセンター
著者向け
出版プロセス編集委員会範囲と方針査読よくある質問投稿
図書館員向け
推薦の声購読アクセスリソース図書館諮問委員会よくある質問
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experimentsアーカイブ
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教員リソースセンター教員サイト
利用規約
プライバシーポリシー
ポリシー

関連する概念動画

Colloids03:22

Colloids

17.2K
Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...
17.2K
Colloids and Suspensions01:17

Colloids and Suspensions

3.4K
Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles visible to the naked eye or seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. The suspended particles in a suspension settle out after some time of mixing. The separation of particles from a suspension is...
3.4K
Types of Fluids01:27

Types of Fluids

1.2K
Fluids can be classified into Newtonian and non-Newtonian fluids based on their response to shear stress. Newtonian fluids have a linear relationship between shear stress and the shear strain rate, following Newton's law of viscosity. Their viscosity remains constant regardless of the shear rate, making their behavior predictable and easier to analyze. Common examples include water, air, oil, and gasoline.
In contrast, non-Newtonian fluids do not follow Newton's law of viscosity, and...
1.2K
Newtonian Fluid: Problem Solving01:18

Newtonian Fluid: Problem Solving

1.1K
Newtonian fluids exhibit a constant viscosity, meaning their shear stress and shear strain rate are directly proportional. This property ensures a predictable and stable response to applied forces, maintaining a linear relationship between force and flow. Examples include water, air, and light oils, consistently demonstrating this proportional behavior regardless of external conditions.
A velocity gradient forms within the fluid when a Newtonian fluid is placed between two parallel plates, with...
1.1K
Capillarity in Fluid01:19

Capillarity in Fluid

1.6K
Capillarity describes the movement of liquid in small spaces without external forces acting on it. The capillarity is driven by surface tension and adhesive interactions between the liquid and surrounding solid surfaces. This effect is often seen in narrow tubes, porous materials, and fine particles.
Surface tension is crucial to capillarity. It results from cohesive forces between liquid molecules at the liquid-air boundary, forming a skin that resists external forces. When the capillary tube...
1.6K
Steady, Laminar Flow Between Parallel Plates01:17

Steady, Laminar Flow Between Parallel Plates

1.1K
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.
1.1K

こちらも読む

関連記事

共著者、ジャーナル、引用グラフによってこの研究に関連する記事。

並び替え
Same author

The foam film's stepwise thinning phenomenon and role of oscillatory forces.

Advances in colloid and interface science·2022
Same author

Two-phase displacement dynamics in capillaries-nanofluid reduces the frictional coefficient.

Journal of colloid and interface science·2018
Same author

Prediction of the rate of the rise of an air bubble in nanofluids in a vertical tube.

Journal of colloid and interface science·2018
Same author

Estimation of structural film viscosity based on the bubble rise method in a nanofluid.

Journal of colloid and interface science·2018
Same author

Capillary Rise: Validity of the Dynamic Contact Angle Models.

Langmuir : the ACS journal of surfaces and colloids·2017
Same author

Step-Wise Velocity of an Air Bubble Rising in a Vertical Tube Filled with a Liquid Dispersion of Nanoparticles.

Langmuir : the ACS journal of surfaces and colloids·2017

関連する実験動画

Updated: May 6, 2026

Fast Imaging Technique to Study Drop Impact Dynamics of Non-Newtonian Fluids
10:09

Fast Imaging Technique to Study Drop Impact Dynamics of Non-Newtonian Fluids

Published on: March 6, 2014

11.8K

固体上にナノ流体の拡散

Darsh T Wasan1, Alex D Nikolov

  • 1Department of Chemical and Environmental Engineering, Illinois Institute of Technology, Chicago, Illinois 60616, USA. wasan@iit.edu

Nature
|May 9, 2003
PubMed
まとめ

ナノ流体は,接触線で粒子の順番が整っているため,独特の拡散行動を示します. この発見は,石油回収の強化と効果的な油性土壌除去のための新しいメカニズムを明らかにしています.

科学分野:

  • コロイドと表面科学 コロイドと表面科学
  • マテリアルサイエンス 材料科学
  • 環境工学環境工学とは

背景:

  • ナノスケール粒子のサスペンションであるナノ流体にはさまざまな用途がありますが,その拡散と粘着は単純な液体とは異なります.
  • 現存する理論では,ナノ流体内の粒子の配列が,そのマクロスケープの振る舞いに影響することを示唆している.
  • これらの現象を理解することは,土壌修復や石油回収などのアプリケーションに不可欠です.

研究 の 目的:

  • 三相接触領域におけるナノ流体における拡散ダイナミクスと粒子の順序を調査する.
  • 油性土壌除去などの実用的なアプリケーションのためのナノフリウイドの行動の可能性を探求する.

主な方法:

  • ビデオ顕微鏡を用いて,水中のナノメートルのサイズのポリスチレン球の動作を観察した.
  • 液体の縁の粒子の二次元結晶のような順序を分析した.

主要な成果:

  • 水中のポリシュチレン球の2次元結晶のような順序を,3相接触領域で実証した.
  • 粒子の順序と相関するミセラ流体における拡大された拡散ダイナミクスを観察した.
  • 油性土壌除去における洗浄作用のための新しいメカニズムを特定しました.

さらに関連する動画

Pool-Boiling Heat-Transfer Enhancement on Cylindrical Surfaces with Hybrid Wettable Patterns
07:32

Pool-Boiling Heat-Transfer Enhancement on Cylindrical Surfaces with Hybrid Wettable Patterns

Published on: April 10, 2017

8.4K
Synthesis of Graphene Nanofluids with Controllable Flake Size Distributions
07:32

Synthesis of Graphene Nanofluids with Controllable Flake Size Distributions

Published on: July 17, 2019

6.3K

関連する実験動画

Last Updated: May 6, 2026

Fast Imaging Technique to Study Drop Impact Dynamics of Non-Newtonian Fluids
10:09

Fast Imaging Technique to Study Drop Impact Dynamics of Non-Newtonian Fluids

Published on: March 6, 2014

11.8K
Pool-Boiling Heat-Transfer Enhancement on Cylindrical Surfaces with Hybrid Wettable Patterns
07:32

Pool-Boiling Heat-Transfer Enhancement on Cylindrical Surfaces with Hybrid Wettable Patterns

Published on: April 10, 2017

8.4K
Synthesis of Graphene Nanofluids with Controllable Flake Size Distributions
07:32

Synthesis of Graphene Nanofluids with Controllable Flake Size Distributions

Published on: July 17, 2019

6.3K

結論:

  • ナノ流体内のコロイド順序化は,拡散ダイナミクスを著しく強化します.
  • この拡張された拡散は,油性土壌を効果的に除去し,石油回収を改善するための新しいメカニズムを提供します.
  • この発見は,従来の液体拡散モデルに挑戦し,材料科学と環境応用に新たな道を開く.