Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Two Components: Liquid–Liquid Systems01:27

Two Components: Liquid–Liquid Systems

134
A pressure-composition phase diagram explicitly describes the behavior of an ideal solution of two volatile liquids under varying pressures and compositions. A pressure-composition diagram has two main curves. The bubble point curve represents the plot of pressure versus liquid mole fraction. It indicates the pressure at which the first bubble of vapor forms from the liquid phase as the system pressure decreases.The dew point curve is the pressure versus vapor mole fraction. It indicates the...
134
Steady, Laminar Flow Between Parallel Plates01:17

Steady, Laminar Flow Between Parallel Plates

1.0K
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.
1.0K
The Fluid Mosaic Model01:34

The Fluid Mosaic Model

185.9K
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.
185.9K
Fluid Movement Between Compartments01:18

Fluid Movement Between Compartments

4.8K
The force applied by fluids against a surface, known as hydrostatic pressure, initiates the transfer of fluid among different compartments. Within our blood vessels, the blood's hydrostatic pressure is a result of the heart's pumping action. At the arteriolar end of capillaries, hydrostatic pressure (capillary blood pressure) exceeds the opposing colloid osmotic pressure created primarily by plasma proteins like albumin. This discrepancy in pressure propels plasma and nutrients from the...
4.8K
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
Accelerating Fluids01:17

Accelerating Fluids

2.5K
When a fluid is in constant acceleration, the pressure and buoyant force equations are modified. Suppose a beaker is placed in an elevator accelerating upward with a constant acceleration, a. In the beaker, assume there is a thin cylinder of height h with an infinitesimal cross-sectional area, ΔS.
The motion of the liquid within this infinitesimal cylinder is considered to obtain the pressure difference. Three vertical forces act on this liquid:
2.5K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Impact of charge distribution on the stability of ferroelectric nematic liquid crystals.

Soft matter·2025
Same author

Formation dynamics of branching structure in the slippery DLCA model.

The Journal of chemical physics·2024
Same author

Relaxation to steady states of a binary liquid mixture around an optically heated colloid.

Physical review. E·2022
Same author

Contribution of internal degree of freedom of soft molecules to Soret effect.

Physical review. E·2021
Same author

Correction: Transient coarsening and the motility of optically heated Janus colloids in a binary liquid mixture.

Soft matter·2020
Same author

Transient coarsening and the motility of optically heated Janus colloids in a binary liquid mixture.

Soft matter·2020

Related Experiment Video

Updated: Apr 15, 2026

Preparation of Janus Particles and Alternating Current Electrokinetic Measurements with a Rapidly Fabricated Indium Tin Oxide Electrode Array
09:55

Preparation of Janus Particles and Alternating Current Electrokinetic Measurements with a Rapidly Fabricated Indium Tin Oxide Electrode Array

Published on: June 23, 2017

8.7K

Controlled motion of Janus particles in periodically phase-separating binary fluids.

Takeaki Araki1, Shintaro Fukai

  • 1Department of Physics, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan. araki@scphys.kyoto-u.ac.jp.

Soft Matter
|April 8, 2015
PubMed
Summary

Janus particles propelled through binary fluid mixtures move towards their head. This motion is driven by selective adsorption and asymmetric hydrodynamic flow during phase separation.

More Related Videos

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures
10:56

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

Published on: May 20, 2014

12.6K
Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions
11:38

Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions

Published on: April 19, 2018

8.6K

Related Experiment Videos

Last Updated: Apr 15, 2026

Preparation of Janus Particles and Alternating Current Electrokinetic Measurements with a Rapidly Fabricated Indium Tin Oxide Electrode Array
09:55

Preparation of Janus Particles and Alternating Current Electrokinetic Measurements with a Rapidly Fabricated Indium Tin Oxide Electrode Array

Published on: June 23, 2017

8.7K
Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures
10:56

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

Published on: May 20, 2014

12.6K
Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions
11:38

Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions

Published on: April 19, 2018

8.6K

Area of Science:

  • Soft Matter Physics
  • Fluid Dynamics
  • Materials Science

Background:

  • Janus particles exhibit distinct surface properties, enabling directed motion.
  • Binary fluid mixtures undergo phase separation and mixing, creating dynamic environments.
  • Understanding particle behavior in complex fluids is crucial for microfluidics and materials assembly.

Purpose of the Study:

  • To numerically investigate the propulsion mechanism of a Janus particle within a phase-separating binary fluid.
  • To analyze the role of wettability and phase dynamics in particle movement.
  • To explore the influence of fluid composition and frequency on particle locomotion.

Main Methods:

  • Numerical simulations of a Janus particle in a binary fluid.
  • Modeling selective adsorption based on surface wettability.
  • Analyzing induced hydrodynamic flows during phase separation and mixing cycles.

Main Results:

  • Selective adsorption of one fluid component to the particle's tail drives motion.
  • Asymmetric hydrodynamic flow generated during demixing propels the particle towards its head.
  • Particle motion significantly reduces during the mixing phase due to diffusion-dominated processes.
  • The particle exhibits continuous directed movement towards its head over repeated cycles.

Conclusions:

  • The study demonstrates a novel self-propulsion mechanism for Janus particles in binary fluids.
  • The findings highlight the importance of interfacial phenomena and hydrodynamic interactions in active matter.
  • This research provides insights into designing self-propelled micro-machines for targeted delivery and manipulation in complex fluids.