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(BBC)   The name's Bond. Atomic Bond   (bbc.co.uk ) divider line
    More: Cool, atomic force microscopies, chemical bonds, Graphene, buckyballs, deflections, molecules, atoms, fullerene  
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6793 clicks; posted to Geek » on 14 Sep 2012 at 8:36 AM (3 years ago)   |   Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



16 Comments   (+0 »)
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2012-09-14 09:22:05 AM  
Holy fark that's awesome.

Yes, I am a chemist.
 
2012-09-14 09:26:27 AM  
I thought there was only ionic and doric?
 
2012-09-14 09:41:39 AM  

jlawn001: I thought there was only ionic and doric?


ionic, doric, and iambic pentameter
 
2012-09-14 09:52:13 AM  
i.qkme.me
 
2012-09-14 09:56:54 AM  

SpectroBoy: jlawn001: I thought there was only ionic and doric?

ionic, doric, and iambic pentameter


The way man sees the world today so fine
To look into the building blocks of life
Reminds me of the days when time was mine
And focus on God's works without the wife.
 
2012-09-14 10:04:06 AM  
I used AFM once.

Didn't look anything as cool as that.

It's nice to see that molecules really do look like he hexagons we keep drawing on blackboards.
 
2012-09-14 10:06:28 AM  

SpectroBoy: jlawn001: I thought there was only ionic and doric?

ionic, doric, and iambic pentameter


And rich Corinthian leather.
 
2012-09-14 10:30:37 AM  
Science!
 
2012-09-14 11:39:46 AM  
What's a record needle?

Ha ha, just kidding, but I bet more than a few readers don't know...
 
2012-09-14 11:46:31 AM  
 
2012-09-14 01:19:36 PM  

Bondith: I used AFM once.

Didn't look anything as cool as that.

It's nice to see that molecules really do look like he hexagons we keep drawing on blackboards.


To be fair, holy farking shiat that's ridiculous resolution. The one I use can't get below about an angstrom with even a really nice tip, what we're seeing in that image is something like 1/100th of that (graphene interatomic spacing is... I want to say 1.47 since it falls under the sp2 hybridization for the most part, we're seeing fine details of electron density in the bonds).

KerwoodDerby: What's a record needle?

Ha ha, just kidding, but I bet more than a few readers don't know...


To be fair, that's a more generally accessible analogy than describing how tapping AFM or capacitive measurements actually work. I tried to explain it to an English major once, they're still cleaning her brains out of the siding.
 
2012-09-14 02:26:34 PM  
This reminds me of Saturday's thread "Scientists cast doubt on infallibility of Heisenberg's Uncertainty Principle...." In that thread subby, TFA and most of the thread's commenters confused the HUP with Heisenberg's formulation of how a weak measurement would disturb the measured system. The HUP is putting a size restriction on the atom, for example. So even though, if you measure the radius of the electron, it appears to be very, very small (perhaps zero) the electron cloud radius is much larger, on the order of an angstrom because the quantized energy (and momentum) levels of the atom restricts the range of the electron's energy (and momentum). That part is still true. However Heisenberg's formulation of how a weak measurement disturbs the system is claimed to be inaccurate. The AFM is making (I believe) a weak measurement. It is making very precise but average measurement of how the electron's position influences the tip of the probe you can map out the electron clouds in exquisite detail. Hence the images in TFA. You might think that the HUP means you cannot measure electron position that precisely without blowing up the atom (so to speak) but the trick is it's an average position. That's kind of cool, don't you think?
 
2012-09-14 02:32:35 PM  
Is that anything like an Ion Flemming?
 
2012-09-14 04:58:19 PM  

Bondith: It's nice to see that molecules really do look like he hexagons we keep drawing on blackboards.


Not only do they make the right shapes, but the bond lengths and electron densities also match what is predicted. I thought the coolest aspect of the pentacene picture they released earlier was that you could see that the middle really is electron deficient and the edges are electron rich. The theory we use to draw those shapes and make those predictions is very solid, but its still nice to get real pictures of this stuff.
 
2012-09-14 06:22:12 PM  
How does this have so few comments, its got bonds pictured of single molecules and...eh. Lets just go back to Batman and the Kardashians.
 
2012-09-15 07:03:44 AM  
Wow. Just wow.
 
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