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Comment: Electrical Memristors Don't Exist Yet (Score 5, Informative) 184

by indigest (#28658731) Attached to: Memristor Minds, the Future of Artificial Intelligence
From the article:

What was happening was this: in its pure state of repeating units of one titanium and two oxygen atoms, titanium dioxide is a semiconductor. Heat the material, though, and some of the oxygen is driven out of the structure, leaving electrically charged bubbles that make the material behave like a metal.

The memristor they've created depends on the movement of oxygen atoms to produce the memristor-like electrical behavior. Purely electrical components such as resistors, capacitors, inductors, and transistors only rely on the movement of electrons and holes to produce their electrical behavior. Why is this important? The chemical memristor is an order of magnitude slower than the theoretical electrical equivalent, which no one has been able to invent yet.

I think the memristor they've created is a great piece of technology and will certainly prove useful. However, it is like calling a rechargeable chemical battery a capacitor. While both are useful things, only one is fast enough for high speed electronics design for applications like the RAM they mentioned. On the other hand, a chemical memristor could be a flash memory killer if they can get the cost down (which I doubt to happen any time soon).

Comment: Extra Battery Life (Score 1) 160

by indigest (#26183765) Attached to: Student Invention May Significantly Extend Mobile Device Battery Life
Although I'm doubtful that this invention would actually save 34.7mW, I was curious to see how much extra battery life this would actually give me.

My Nokia 2630 has a 700mAh 3.7V battery and is rated for 6 hours of talk time. Based on these numbers, the phone consumes 431.7mW. With the power reduction described, this would result in 397mW of power consumption, yielding 6.52 hours of talk time. Thus, an 8.7% increase in battery life.

As I said, I am pretty skeptical of a 34.7mW power savings; research papers often leave out the negative details.
Biotech

Bionic Eye Could Restore Vision 167

Posted by Zonk
from the we-have-the-technology dept.
MattSparkes writes "A new bionic eye could restore vision to the profoundly blind. A prototype was tested on six patients and 'within a few weeks all could detect light, identify objects and even perceive motion again. For one patient, this was the first time he had seen anything in half a century.' The user wears a pair of glasses that contain a miniature camera and that wirelessly transmits video to a cellphone-sized computer in the wearer's pocket. This computer processes the image information and wirelessly transmits it to a tiny electronic receiver implanted in the wearer's head."

"Stupidity, like virtue, is its own reward" -- William E. Davidsen

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