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Get a desk copy of CHEMISTRY OF THE ELEMENTS. It is a very easy and usefyl reference for any physical sicentist. read the section on Be.
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You'd better Be keeping it real dogg launch that sheit!We the people are the rightful masters of both Congress and the courts, not to overthrow the Constitution but to overthrow the men who pervert the Constitution. - Abraham LincolnComment
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I'm in the mood. Talk some science to me...Comment
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Well, there's the hydrogen bomb...Comment
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I love semiconductorsComment
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Social sciences offer new happiness.Comment
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How small are they gonna get?Originally posted by TCO
I love semiconductors
IBM has some sick storage technology, can fit a whole "hard disk" on the head of a pin even.We the people are the rightful masters of both Congress and the courts, not to overthrow the Constitution but to overthrow the men who pervert the Constitution. - Abraham LincolnComment
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I think the big questions are when do they change materials. They keep squeezing more and more out out of silicon. but eventually, they will hit limits. They've already made some big switches: Cu for Al (driven by IBM) for the interconnects. Don't know what is being done with dielectric. Used to be a lot of talk about moving away from SiO2 to a higher k dielectric. My knowldedge is pretty 90s though. I remember a lot of excimer laser work in 90s too. tHey keep going to shorter wavelength. Have to change photoresists each time though. Latest I've heard is activity on using high refractive index liquid as part of the processing.Originally posted by Ted Striker
How small are they gonna get?
IBM has some sick storage technology, can fit a whole "hard disk" on the head of a pin even.Comment
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I know a dude working on getting a higher-k dielectric using HfO2. He claimed a five times boost in performance, but he might've been bull****ting about that. But apparantly the problem is that everyone who's working on it is getting different results."Beware of the man who works hard to learn something, learns it, and finds himself no wiser than before. He is full of murderous resentment of people who are ignorant without having come by their ignorance the hard way. "
-BokononComment
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ooops...I screwed up. I meant low-K dielectric. Helps the switching time I think. Lot of work to try to approach the dielectric of air. Lot of stuff on aerogels and the like.Originally posted by Ramo
I know a dude working on getting a higher-k dielectric using HfO2. He claimed a five times boost in performance, but he might've been bull****ting about that. But apparantly the problem is that everyone who's working on it is getting different results.
I'm not sure what uses in a computer need a high K dielectric, but ferroelectric materials are definitely a choice there. Things that are in capacitors like various complicated titanates or tantalates. Basically need a little unit cell with an atom in it that can move around inside his cage. I think here the hard part would be incorporating into computer processing chemistries.Comment
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I think high k dielectrics are important in computing. If you want to maintain a high capacitance while increasing the thickness of the dielectric (to minimize the tunneling current through the dielectric), you need a higher k value. Dunno why a higher capicitance is importnat though.."Beware of the man who works hard to learn something, learns it, and finds himself no wiser than before. He is full of murderous resentment of people who are ignorant without having come by their ignorance the hard way. "
-BokononComment
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ferroelectrics are cool. good classic stuff from the 50s. When all the good materials work was done.Comment
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I got a better explanation from the guy. Higher capictance gets you a larger charge build-up, therefore a higher current during discharge, therefore more channels for information transfer. Something like that.
Boring **** IMO...
But some of the nuts and bolts are interesting. Many body theory and density functional theory... I suppose I could stomach that kind of condensed matter."Beware of the man who works hard to learn something, learns it, and finds himself no wiser than before. He is full of murderous resentment of people who are ignorant without having come by their ignorance the hard way. "
-BokononComment
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It seems like every talk I go to mentions density functional theory. I need to learn more about that."Beware of the man who works hard to learn something, learns it, and finds himself no wiser than before. He is full of murderous resentment of people who are ignorant without having come by their ignorance the hard way. "
-BokononComment
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Sounds like a classical field theory.Originally posted by Ramo
density functional theory12-17-10 Mohamed Bouazizi NEVER FORGET
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