Resistor, inductor, capacitor, memristor!

It's a pity that the article does not actually describe this memristor (I mean the actual device they built).

But shouldn't the diode be included in the list of circuit elements?

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papageno


"Why waste time learning, when ignorance is instantaneous?" - Hobbes (Calvin and Hobbes)

"It's all about context!" - Vince Noir (The Mighty Boosh)

"I've never heard of such a brutal and shocking injustice that I cared so little about!" - Zapp Brannigan (Futurama)

Why do scientists nowadays come up with these unpronounceable names? Sounds like something conjured up by the dark arts of marketing.

Anyway, well done, good job.

P.S. Papageno, I think the article explains it. It's actually quite interesting, and relates to certain other threads currently active in this forum.

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"All your bias are belong to us." Ara Pacis
"A witty saying proves nothing." Voltaire

I was satisfied with the articles explaination too. But; I think Papageno was thinking more along the lines of how it is built, or what it is made of, or what technology they had to overcome to do it.

Anyway, I think I've had a memory resistor in my head for over 4 decades.

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Numbers are not case sensitive. (me)

it "remembers the amount of charge flowing through it"---isn't that kind of like, "my speed is 60 miles"?

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Todd (Bowie, MD, US, North America, Earth, Sol System, Vega region, Local Bubble, Orion arm, Milky Way Galaxy, Local Group, Virgo A Cluster, Virgo supercluster, the universe in which spock is clean shaven)

Quidquid latine dictum sit, altum sonatur.

personal page: http://blog.astrosketches.info

I took it more as "Last time I drove, I went 60, so I now can't exceed 60"

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Numbers are not case sensitive. (me)

I think you missed the point--it's a complaint about poor journalism and misuse of terminology.

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Todd (Bowie, MD, US, North America, Earth, Sol System, Vega region, Local Bubble, Orion arm, Milky Way Galaxy, Local Group, Virgo A Cluster, Virgo supercluster, the universe in which spock is clean shaven)

Quidquid latine dictum sit, altum sonatur.

personal page: http://blog.astrosketches.info

I guess I did...
I'm not as deep into the technology as many here, so maybe there's some technobabble that I don't see.

Plus; the fact that it's a blog site kind of squelches any of my expectations of professional journalism even if an individual article is written by a professional.

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Numbers are not case sensitive. (me)

Exactly: I am interested in the nuts and bolts of the actual, physical memristor.

As soon as I can, I am going to check out Nature.
EDIT to add: news story in Nature.

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papageno


"Why waste time learning, when ignorance is instantaneous?" - Hobbes (Calvin and Hobbes)

"It's all about context!" - Vince Noir (The Mighty Boosh)

"I've never heard of such a brutal and shocking injustice that I cared so little about!" - Zapp Brannigan (Futurama)

From the abstract in Nature, the actual device involves ionic transport. That is, when the voltage is applied not only electrons but also atoms move around.
Considering how slow atoms are compared to electrons, my physical intuition can grasp why there would be a memory effect

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papageno


"Why waste time learning, when ignorance is instantaneous?" - Hobbes (Calvin and Hobbes)

"It's all about context!" - Vince Noir (The Mighty Boosh)

"I've never heard of such a brutal and shocking injustice that I cared so little about!" - Zapp Brannigan (Futurama)

Well, I guess it's common to mix up units--I recall a speech by a businessman, I forgot who, who was often asked, "how much money do you make?"--an informal way of saying "how many dollars per year"--but he always, just to illustrate that the proper unit is money per time, not just money, would reply, "$11,000". He'd wait a few seconds, then add, "per minute."

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Todd (Bowie, MD, US, North America, Earth, Sol System, Vega region, Local Bubble, Orion arm, Milky Way Galaxy, Local Group, Virgo A Cluster, Virgo supercluster, the universe in which spock is clean shaven)

Quidquid latine dictum sit, altum sonatur.

personal page: http://blog.astrosketches.info

when are we going to get neon colored glass chips like they used on the starship Enterprise?
whenever there is a problem, all we'd have to do is swap a few random chips around to reverse the polarity of something or other..

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Or wave some "tool" with blinking lights over it...

The three mentioned - inductor, capacitor and resistor - are basic circuit devices. Think of them as fundamental units. Are you suggesting that diode operation cannot be expressed in terms of those three?

How do you express a diode's operation in terms of those three? I have no immediate proof, but suspect it's impossible.

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Todd (Bowie, MD, US, North America, Earth, Sol System, Vega region, Local Bubble, Orion arm, Milky Way Galaxy, Local Group, Virgo A Cluster, Virgo supercluster, the universe in which spock is clean shaven)

Quidquid latine dictum sit, altum sonatur.

personal page: http://blog.astrosketches.info

In my opinion there are a hundred more or less distinct circuit elements, including several variations on the resistor, such as the varistor and thermistor. We can sort of represent a diode at dc and low frequencies as a special resistor. A diode has several million ohms at voltages below 1/10 volt. and up to about 1200 volts in one direction; In the neighborhood of 20 ohms, at one volts in the forward direction. Like a resistor, failure is likely if you exceed the watt-second rating in either direction.
Many of the circuit elements are used rarely such as the tunnel diode, the carbon arc, battery, magnetron and ionized gas tube. Neil

I believe the article was referring to basic circuit elements. Variations of a resistor are just that, variations. I suspect most, if not all, of your hundred or more elements use some combination of the principles of inductance, capacitance and resistance.

No, what I am saying is that if the memristor cannot be modelled in terms of those three elements, then neither should be the diode or other non-linear elements.

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papageno


"Why waste time learning, when ignorance is instantaneous?" - Hobbes (Calvin and Hobbes)

"It's all about context!" - Vince Noir (The Mighty Boosh)

"I've never heard of such a brutal and shocking injustice that I cared so little about!" - Zapp Brannigan (Futurama)

Why has no one mentioned the transitor, or have we thrown that out with the vacuum tube?

G^2