• glizzyguzzler@lemmy.blahaj.zone
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        4 months ago

        Check out https://en.wikipedia.org/wiki/Hot-carrier_injection hot carrier degredation, it’s in the vicinity of electron mobility but in a semiconductor setting. Key link is it’s electrons with momentum doing the work. In this case electrons (much hotter than in electron mobility, which are limited by the saturation velocity) smash into the gate dielectric, making it a worse dielectric. Hot carrier injection doesn’t have to end in damage to the dielectric, but when it does it’s hot carrier degredation. There’s a lot going on though, semiconductors are really complex - like electron tunneling also exists.

      • lectricleopard@lemmy.world
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        4 months ago

        Electromigration in ICs typically occurs in metal interconnect, so there are no dopants there to move. Dopants are added to the silicon substrate.

    • lectricleopard@lemmy.world
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      4 months ago

      This is like saying an SUV isn’t a car.

      OP: Look at my car

      Me: I have one too. It’s an SUV

      You: SUV’s aren’t cars.

      • Zacryon@feddit.org
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        4 months ago

        If you understand “car” as “hardware degradation” there is something to it, despite calling it “electromigration”.

        You said it (= whiskers) can be simulated and that it’s called electromigration. From what I understood, this statement is wrong, since they are both different in both cause and effect. Metal whiskering can be simulated to a certain extent, yes. But that’s vastly different to what electromigration is and how it works.

        • lectricleopard@lemmy.world
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          4 months ago

          You got a degree in semi conductor physics? Lol

          Like i told the other guy, you’re being pedantic. Engineers will call all these things whiskers. And I just mentioned I deal with one of them in my work. I’m not saying the photo in the thumbnail is an example of electromigration.

          • Zacryon@feddit.org
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            4 months ago

            You got a degree in semi conductor physics? Lol

            Man, that “lol” really annoys me and comes accross condescending. If you’ve got no arguments, there is no need for an academic dick measuring contest. You can just leave it. To answer your question:
            In parts, yes. Not my specialisation though, but enough to be able to distinguish electromigration from whiskering.

            being pedantic. Engineers will call all these things whiskers.

            Being pedantic is part of the job of an engineer. I’m an engineer working in research. I don’t call electromigration “metal whiskering” or vice versa.
            Besides, as I’ve mentioned, it wouldn’t even be pedantic to distinguish them that way as the differences are not miniscule. They are formed differently and look differently.

            I’m not saying the photo in the thumbnail is an example of electromigration.

            Yes, to the post which is titled “TIL computers can sometimes grow crystals” you said:

            This can happen inside ICs […] It’s called electromigration.

            Which is still wrong. We can observe electromigration in ICs, or in metallic conductors in general, but this is a different phenomenon than whiskering, which can look like those crystals while conductors affected by electromigration form voids and protrusions out of material build-ups which usually can’t even be seen by the bare eye.
            But maybe that was a misleading expression and you didn’t mean to equate those two.

          • jetA
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            4 months ago

            You got a degree in semi conductor physics? Lol

            Appeals to authority are not a good look

            • lectricleopard@lemmy.world
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              4 months ago

              From where do the gentleman’s statement gain their credibility. Site your sources, please. We are having an argument on the internet folks, the consequences are dire.

              This is Saturday night and this is staring to remind me of Monday morning meetings.

              Have an nice weekend.

              • jetA
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                4 months ago

                Why is it an argument at all? Why can’t it be just as a constructive discussion where people learn from each other, and have fun with new ideas