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OT: Gold nanoparticles color differences
Posted by: Michael
Date: February 26, 2006 04:51PM
Ok, this may challenge this Mac group...

I understand that gold nanoparticles are different colors depending on the size of the nanoparticle. I'm trying to understand why this occurs in terms I can understand. I've run across terms such as, "surface plasmon oscillation," etc.--these make my eyes glaze over.

Anybody have an easy-to-understand explanation?

Thanks.
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Re: OT: Gold nanoparticles color differences
Posted by: joycee
Date: February 26, 2006 05:05PM
Michael Wrote:
-------------------------------------------------------
> I've run across terms such as,
> "surface plasmon oscillation," etc.--these make my
> eyes glaze over.


"surface plasmon oscillation" - until now, I've never run across such a term! LOL. And I'm with ya on the eyes glazing over thing.



*´¨)
¸.·´¸.·*´¨) ¸.·*¨)
(¸.·´ (¸.·´How about if you greased them up first? Are chihuahua's cooperative pack hunters? ~TheCaber
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Re: OT: Gold nanoparticles color differences
Posted by: MacMagus
Date: February 26, 2006 05:17PM
This seems to privide a pretty decent explanation:
[www.physorg.com]
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Re: OT: Gold nanoparticles color differences
Posted by: SteveJobs
Date: February 26, 2006 06:36PM
Chocolate is a dark, dark, orange.

(Just thought I'd throw that in)


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Re: OT: Gold nanoparticles color differences
Posted by: mikebw
Date: February 27, 2006 05:35AM
probably something to do with the various wavelengths of light not ahving enough room to get reflected back. The longer ones aren't hitting the surface so those colors are gone.
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Re: OT: Gold nanoparticles color differences
Posted by: Michael
Date: February 27, 2006 06:01AM
MacMagus Wrote:
-------------------------------------------------------
> This seems to privide a pretty decent
> explanation:
>

Thanks-that's helpful!
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