Ferrofluid consists of nanoparticles of iron or other magnetic material suspended in liquid. Magnets exert attractive force on the nanoparticles, causing them to line up with the lines of magnetism that make up the magnetic field. The ferrofluid I used is made from magnetic laser jet toner and oil. I used this ferrofluid to make the magnetic field created by my electromagnet visible.
In my original question, I wondered if ferrofluid could be used to lift an object. I also hypothesized that changing the voltage or current of electricity feeding an electromagnet would change the magnetic field strength, which would affect whether or not the ferrofluid would lift an object.
My experiments show that by using the magnetic field of an electromagnet, you can make ferrofluid lift an object weighing six grams or less. My experiments also show that changing either voltage or current feeding the electromagnet will control the magnetic field and change how strong the effect on the ferrofluid is.
In my original question, I wondered if ferrofluid could be used to lift an object. I also hypothesized that changing the voltage or current of electricity feeding an electromagnet would change the magnetic field strength, which would affect whether or not the ferrofluid would lift an object.
My experiments show that by using the magnetic field of an electromagnet, you can make ferrofluid lift an object weighing six grams or less. My experiments also show that changing either voltage or current feeding the electromagnet will control the magnetic field and change how strong the effect on the ferrofluid is.