X

Another step toward harnessing memristors (photos)

Researchers say they have found out that memristors function like the neurons that pass information around the human brain.
By Andy Smith, Contributor
crossbar1x17_2.jpg
1 of 6 Andy Smith/ZDNET

Memristors (memory + resistors) have been hyped as leading the future of computers but the problem has been that no one really knew how they worked - until now.

HP, which discovered memristors in 2006, teamed with scientists from the University of California at Santa Barbara to study them and discovered how current flow caused heating that changed the molecular structure of the device. They also discovered that memristors function like the neurons that pass information around the human brain. See HP figures out how memristors work, predicts robot use by ZDNet UK's David Meyer.

Also see:

The amazing memristor - beyond Moore's Law and beyond digital computing

Researchers develop new brain-like molecular processor

Ready for ReRAM? HP and Hynix think so

Storage: the next generation

This post was originally published on Smartplanet.com
rcjMemristor.jpg
2 of 6 Andy Smith/ZDNET

Memristors are a "thin titanium dioxide film held between two metal electrodes, and they act within circuitry as resistors. However, memristors have the added quality of remembering the resistance they had when current last flowed through them, hence the portmanteau name. Their resistance increases or decreases depending on the direction of the current," according to ZDNet UK's David Meyer.

"Representing a fourth basic passive circuit element, memristors have the ability to ‘remember’ the total electrical charge that passes through them," says Research associate John Paul
Strachan.

This post was originally published on Smartplanet.com
memristor.jpg
3 of 6 Andy Smith/ZDNET

Electrical charge flowing through a memristor changes the resistance state of the device, but actually observing the corresponding material changes has been a challenge. Highly focused x-rays were used to probe the memristor non-destructively and a ~100 nm region with concentrated oxygen vacancies (right, shown in blue) where the memristive switching occurs was discovered. Surrounding this region a newly developed structural phase (red) was also found, which acted like a thermometer telling researchers where and how hot it became.

Caption credit: HP

This post was originally published on Smartplanet.com
stan.jpg
4 of 6 Andy Smith/ZDNET

HP's Stan Williams led the research team that cracked open memristors in 2008. ZDNet's Tom Foremski sat down with him and talked about his team's findings.

This post was originally published on Smartplanet.com
strachan.jpg
5 of 6 Andy Smith/ZDNET

"One of the biggest hurdles in using these devices is understanding how they work: the microscopic picture for how they undergo such tremendous and reversible change in resistance. We now have a direct picture for the thermal profile that is highly localised around this channel during electrical operation, and is likely to play a large role in accelerating the physics driving the memristive behavior." - John Paul Strachan of the nanoElectronics Research Group at HP Labs.

This post was originally published on Smartplanet.com
memristorhynix-1.jpg
6 of 6 Andy Smith/ZDNET

The timeline of memristors.

This post was originally published on Smartplanet.com

Related Galleries

Holiday wallpaper for your phone: Christmas, Hanukkah, New Year's, and winter scenes
Holiday lights in Central Park background

Related Galleries

Holiday wallpaper for your phone: Christmas, Hanukkah, New Year's, and winter scenes

21 Photos
Winter backgrounds for your next virtual meeting
Wooden lodge in pine forest with heavy snow reflection on Lake O'hara at Yoho national park

Related Galleries

Winter backgrounds for your next virtual meeting

21 Photos
Holiday backgrounds for Zoom: Christmas cheer, New Year's Eve, Hanukkah and winter scenes
3D Rendering Christmas interior

Related Galleries

Holiday backgrounds for Zoom: Christmas cheer, New Year's Eve, Hanukkah and winter scenes

21 Photos
Hyundai Ioniq 5 and Kia EV6: Electric vehicle extravaganza
img-8825

Related Galleries

Hyundai Ioniq 5 and Kia EV6: Electric vehicle extravaganza

26 Photos
A weekend with Google's Chrome OS Flex
img-9792-2

Related Galleries

A weekend with Google's Chrome OS Flex

22 Photos
Cybersecurity flaws, customer experiences, smartphone losses, and more: ZDNet's research roundup
shutterstock-1024665187.jpg

Related Galleries

Cybersecurity flaws, customer experiences, smartphone losses, and more: ZDNet's research roundup

8 Photos
Inside a fake $20 '16TB external M.2 SSD'
Full of promises!

Related Galleries

Inside a fake $20 '16TB external M.2 SSD'

8 Photos