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Increased Computer Chip Processing with Conductive Titanium Oxide



Increased Computer Chip Processing with Conductive Titanium Oxide
A method to make non-volatile computer memory which may help solve a problem that has been holding back machine learning has been developed.
Technology Briefing

Transcript


The peer-reviewed journal Advanced Materials describes the development of a new method to make non-volatile computer memory which may help solve a problem that has been holding back machine learning. And it has the potential to revolutionize technologies like voice recognition, image processing, and autonomous driving.

A team from Sandia National Laboratories and the University of Michigan published a paper detailing a new method that will imbue computer chips which power machine-learning applications with more processing power by using a common material found in house paint in an analog memory device which will enable highly energy-efficient “machine inference” operations.

Titanium oxide is one of the worlds’ most common materials. Every painting you buy has titanium oxide in it. It’s cheap and nontoxic. It’s an oxide, and if you take a few oxygen atoms out, you create what are called oxygen vacancies. As it turns out, when you create oxygen vacancies, you make titanium oxide electrically conductive.

Those oxygen vacancies can now store electrical data, giving almost any device more computing power. The team created the oxygen vacancies by heating a computer chip with a titanium oxide coating above 302 degrees Fahrenheit and then separating some of the oxygen molecules from the material using electrochemistry to create vacancies. When it cooled off, it was ready to store any information you program it with.

Right now, computers generally work by storing data in one place and processing that data in another place. That means computers have to constantly transfer data from one place to the next, wasting energy and computing power.

The lead researcher explained how the process has the potential to completely change how computers work. What the team did was make the processing and the storage at the same place. What’s new is that this can be done in a predictable and repeatable manner.

The researchers see the use of oxygen vacancies as a way to help machine learning overcome a big obstacle holding it back right now: power consumption.

Doing machine learning takes a lot of energy because the machine is moving data back and forth causing power consumption. The lead researcher says, “If you have autonomous vehicles, making decisions about driving consumes a large amount of energy to process all the inputs. If we can create an alternative material for computer chips, they will be able to process information more efficiently, saving energy and process a lot more data. Think about your cell phone. If you want to give it a voice command, you need to be connected to a network that transfers the command to a central hub of computers that listens to your voice and then sends a signal back telling your phone what to do. Through this new process, voice recognition and other functions could happen right in your phone.”

The team is now working on refining several processes and testing the method on a larger scale.

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