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Magnetic Ferrofluid

Ferrofluid magnetic liquid contains tiny particles of ferrous material which are suspended in a viscous liquid medium such as oil. The oil allows the tiny ferrous particles to remain evenly dispersed while in suspension and then align and congregate when the attractive force of a magnetic field is introduced. Products like Ferrotec magnetic ferrofluid is a technology that was originally utilised by space agencies to simulate gravity-like forces in the weightless atmospheres of space. Ferrofluid makes it possible to perform many crucial tasks in these zero-gravity environments.

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Ferrofluid also uses its liquid properties at rest and semi-solid, malleable properties in the presence of a permanent or electromagnetic field to create a flexible airtight seal between two surfaces. When a magnetic field is introduced to the ferrofluid liquid the metal components in the fluid are attracted and move toward the source of the field which, in the case of a Loudspeaker diaphragm or microphone, is the permanent Ring Magnet or the electromagnetic voice coil.

Ferrofluid improves sound quality in audio equipment.

Ferrofluids have the ability to absorb or buffer mechanical vibration and are used to improve audio quality in sound recording equipment or to absorb and dissipate heat in loudspeaker cones and voice coils. Ferrofluid liquid can also improve the operation of mechanical devices by creating a frictionless,semi-viscous seal for rotating shafts in computer hard drives and other high-performance equipment. Ferrofluid creates a dust-free environment that lowers operating temperatures, reduces wear and tear and prolongs the life of these advanced types of computerised equipment.

Ferrofluid has medical applications.

Ferrofluid contrasting agents placed into human tissue can enhance the image quality and definition delivered by Magnetic Resonance Imaging machines. Ferrofluid helps these technologies to more accurately reflect the extent of bone or tissue damage. Experiments with the delivery of localised medicines to areas of the human body that can be targeted and controlled remotely by magnets are currently being investigated by medical researchers.

Ferrofluid helps us to understand magnetism.

Ferrofluid liquid is an excellent educational tool that helps demonstrate visually the otherwise invisible path of magnetic fields as they flow between the North and South poles of a magnet. Frenergy stocks EFH1 Ferrofluid in quantities from 30 to 120┬ÁL and also stocks a practical and comprehensive educational kit that includes magnets and everything else you need to conduct your own Ferrofluid experiments. Browse the Alnico Magnet category to find other Frenergy educational products. Orders over $50 are shipped free Australia wide. See the shipping and returns terms and conditions in the FAQ pages.

Frequently Asked Question

What to do with ferrofluid?
Ferrofluids perform in a similar way to traditional iron filings and can be used as an educational tool in schools and universities. The viscous fluid has similar properties to the metal filings but has additional highly technical applications in advanced scientific technologies and aerospace industries.

Where can I buy ferrofluid?
Buy Ferrofluid products via the Frenergy website. Secure payment and free or fast Australia wide shipping options are available. Contact our team via email for help and advice on Ferrofluid products and get a prompt reply using the customer contact form.

What is ferrofluid made of?
As its name suggests, Ferrofluid contains ferrous nanoparticles of magnetite which are suspended in the viscous liquid. Ferrofluid liquid is not itself magnetic but instead reacts to the presence of a magnetic field and is attracted to it.

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The Pull Force listed for each magnet is based on lifting 10mm thick steel vertically. Magnets on a vertical surface (of 10mm thick steel) are generally able to hold around 30% of the pull force listed due to the effects of gravity and the lack of traction between the surface and the shiny magnet.