Imprinting Memory in Nanomagnets by Field Cooling

2021-07-14T10:32:43-06:00
11/05
Supporting Image
Supporting Image
Nanomagnetism

You may know that the media used in magnetic recording technologies, such as computer hard drives, are made of millions of tiny nanomagnets. Each nanomagnet can be switched up or down to record bits of information as ones and zeros. These media are constantly subjected to magnetic fields in order to write, read, and erase information. If you have ever placed a magnet too close to your laptop or cell phone, you know that exposure to an external magnetic field can disrupt information stored this way. Did you know that it is possible for the nanomagnets to "remember" their previous state, if carefully manipulated under specific magnetic field and temperature conditions? Using a kind of memory called topological magnetic memory, scientists have found out how to imprint memory into magnetic thin films by cooling the material under the right conditions.

0 0    
Imprinting Memory in Nanomagnets by Field Cooling2021-07-14T10:32:43-06:00

Magnets, Gatorade, and the Quest for Energy-Efficient Computers

2021-07-14T10:40:22-06:00
09/30
Supporting Image
Supporting Image
Computing with fool's gold?

Fool's gold is a beautiful mineral often mistaken for gold, but recent research shows that its scientific value may be great indeed. Using a liquid similar to Gatorade, it can be turned into a magnet at the flick of a switch! Read on to learn more!

0 0    
Magnets, Gatorade, and the Quest for Energy-Efficient Computers2021-07-14T10:40:22-06:00

A Molecular Switch

2021-07-14T10:41:34-06:00
08/10
Supporting Image
Supporting Image
Tiny magnets do big work
by Guanhua (Tibbers) Hao, Peter Dowben

Think of the hard disk in your computer. Information is stored there in the form of magnetic "bits." But do you know how small a magnet can be? Some molecules make magnetic magic, and these special molecules may give rise to the ultrafast, high precision, low power devices of the future.

0 0    
A Molecular Switch2021-07-14T10:41:34-06:00

Writing the Magnetic Alphabet

2021-07-14T10:45:49-06:00
02/06
Supporting Image
Supporting Image
Laser pencils on magnetic paper

Instead of pencil, paper, and eraser, we can use combinations of lasers and magnetic materials to write, read, and and erase information by varying the temperature and magnetic field. Here we apply our laser "pencil" to magnetic "paper" to write the letter “N” (Go Cornhuskers!!). This technique allows us write, erase, and rewrite tiny magnetic memories like those found in your computer hard drive and other devices, using a precise, non-contact tool. Click to learn more about how it works!

0 0    
Writing the Magnetic Alphabet2021-07-14T10:45:49-06:00
Go to Top