Loading presentation...

Present Remotely

Send the link below via email or IM

Copy

Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.

DeleteCancel

Make your likes visible on Facebook?

Connect your Facebook account to Prezi and let your likes appear on your timeline.
You can change this under Settings & Account at any time.

No, thanks

Ferrofluids

No description
by

Shubhi Sahni

on 17 April 2014

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Ferrofluids

Made up of nanoscale particles of usually magnetite
Sometimes made up of hematite or another compound with iron
Magnetite
's chemical formula: Fe3O4
Hematite
's chemical formula: Fe2O3

Unique Chemical Composition
The Nanoworld of Tomorrow: Ferrofluids
Magnetite
Superb Structure
Full: 1s2 2s2 2p6 3s2 3p6 4s2 3d6
Condensed: [Ar] 4s2 3d6
Electron Configuration of Iron

Magnetite is the precipitate formed from basic solution with an Fe(II) salt and an Fe(III) salt
2 FeCl3 + FeCl2 + 8 NH3 + 4H2O ->
Fe3O4
+ 8 NH4Cl
Octahedral or dodecahedral structure
Tetrahedral VSEPR shape


More on Magnetite
Ferrofluids are currently used as vacuum seals to protect disk drives
They have replaced the archaic O-ring they can act as liquid O-ring seals which magnets hold in place
This technology is applicable to many items such as: ion implantation, wafer handling, diffusion, atomic layer deposition (ALD), vacuum deposition
Researchers in the biomedical field have found that:
Ferrofluids can be used to distribute medication to different parts of the body through a magnetic field
Ferrofluids can be used as contrast agents for magnetic resonance imaging (MRI)
Current and
Prospective Uses
State
: Liquid
Colour
: Black
Odor
: Mild
Transparency
: Opaque
Vapor Density
: 6.4
Solubility
: Extremely low in water at 20°C
Unique Property
: “Spiking” (sharp peaks in the fluid) with exposure to a magnetic field
Stability
: Stable
Unique Property
: Magnetic
Melting

Point
: 401-491°F

Physical & Chemical Properties
Ferrofluids have a very small negative effect on the environment
As they are liquid, there is no resulting mechanical friction and thus no emmisions
They are far more ecologically efficient than other technology used for the same purposes
Only some ferric fluids such as ferric chloride are harmful. For example, ferric chloride is harmful to fish
Minimal
Environmental Impact
Hematite
Sources
Ferrofluid. (n.d.). HMS Beagle. Retrieved March 23, 2014, from http://www.hms-beagle.com/MSDS/Ferrofluid.pdf

Ferrofluid Fun. (n.d.). Physics Central. Retrieved March 23, 2014, from http://www.physicscentral.com/explore/action/ferrofluids.cfm

Ferrofluid Seals. (n.d.). S&D Materials, LLC.: Magnetic seal, ferrofluid seal, rotating seal; high-vacuum seal; new, rebuilt. Retrieved March 23, 2014, from http://www.sdmaterials.com/ferrofluid_seal

Magnetite: mineral information and data.. (n.d.). Mindat.org. Retrieved March 23, 2014, from http://www.mindat.org/min-2538.html

Observation of the Unusual Properties of Ferrofluids. (n.d.). Observation of the Unusual Properties of Ferrofluids. Retrieved March 23, 2014, from http://addis.caltech.edu/teaching/MS90/lab4-prt1.htm

University of Wisconsin-Madison Materials Research Science and Engineering Center Interdisciplinary Education Group. (n.d.). Ferrofluids. Retrieved March 23, 2014, from http://education.mrsec.wisc.edu/background/ferrofluid/
Full transcript