Interesting, especially since the effect as described there has been known and used since the 1930's at least:
"...called a memristor, because it "remembers" changes in the current passing through it by changing its resistance. Now HP claims to have discovered the first instance of a memristor, which it created with a bi-level titanium dioxide thin-film that changes its resistance when current passes through it." Bill Hewlett, co-founder of HP, would get a chuckle out of that statement. The HP corporation was founded in the 1930s with its first product a low-distortion audio oscillator that used such a device in its feedback loop to keep distortion of the output waveform very low! The device Hewlett used was a small incandescent light bulb. A incandescent bulb's resistance varies in proportion to the current flowing through it. IIRC, that invention was Hewlett's senior project at Stanford, and it was their company's first product: the HP 200A Stabilized Wein Bridge Oscillator. It's a circuit every one of us studied and used in engineering school. I still have an example of one on my bench. I elected not to buy the article to see what's different in the devices they're playing with now, but there's a certain "symmetry" in the idea that HP started out with such a device and now their labs are discovering it anew in modern nano-circuits. Ron AC7AC -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mike Markowski Sent: Thursday, May 01, 2008 8:08 AM To: elecraft@mailman.qth.net Subject: [Elecraft] OT: Memristor creation Something new in circuits! News: http://www.eetimes.com/news/latest/showArticle.jhtml?articleID=207403521 The paper itself: http://www.nature.com/nature/journal/v453/n7191/full/nature06932.html 73, Mike ab3ap _______________________________________________ _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
