Electro-rheological Fluid

Create a selection
Electro-rheological Fluid
Create a selection
What looks like a very gory vial of blood is in fact an electro-rheological (ER) fluid: a liquid that consists of a suspension of very fine semi-conducting particles in an electrically-insulating fluid (usually silicone oil). When an electric current is put through this liquid, its viscosity changes from the consistency of a liquid to that of a gel in milliseconds, and reverts back when the current is removed. Unlike our sample of MR fluid, this ER fluid has not settled and solidified. This could be because the makers of this substance matched the densities of the suspended particles and carrier liquid so they wouldn’t separate out, or it could be that the suspended particles are nanoparticles (i.e. so small that they are kept suspended by ‘Brownian motion’, as a result of randomly bumping into the moving molecules of the oily carrier medium).

Sample ID: 65

Particularities

State
Liquid | Solid
Compound
Donated by
Jo Joelson and Bruce Gilchrist
Selections
Categories
Composite
Curiosities
Relationships
Oil | Solid | Gel | Red | Fluid | Blood-like | Electrically-responsive | Suspension | Nanoparticles

Your selections

Add materials you find interesting to your own selections.

Use the plus icon button to select a material and get started.