|
> Nanotech forum > Nanotech > Magnetite Nanocrystals
|
|
| Pages: 1 2 |
Magnetite Nanocrystals |
RP
Join Date:
Sun Jun 3 04:00:34 2007
Posts:10
Reputation:10
 |
RE: Magnetite Nanocrystals |
There was nothing abouth magnetic field of the Earth in the question (but incorrect M^2). Knowing magnetic moment, you can easily calculate magnetic energy.
I am sorry, but, please first read the papers I provided. In bugs, individual nanocrystals are self-assembled in chains forming a long compass needle for which k_BT is small.
We know how to split the chains. |
| Created: Wed Jun 13 04:48:35 2007
|
|
AB
Join Date:
Thu Jun 21 22:16:59 2007
Posts:6
Reputation:10
|
RE: Magnetite Nanocrystals |
I checked this page:
http://www.cmpgroup.ameslab.gov/supermaglab/bugs.html
These bugs are amazing!! They have whiskers too.
And they make nice big chains of crystals. I can believe that such chains are big-enough so that magnetic field of the earth would orient them.
But...one can easily capture these bugs with a small magnet, right?
|
| Created: Thu Jul 5 21:25:53 2007
|
|
AB
Join Date:
Thu Jun 21 22:16:59 2007
Posts:6
Reputation:10
|
RE: Magnetite Nanocrystals |
One question is left unanswered though:
when these cells divide, what happens to the magnetic nano-particles? |
| Created: Thu Jul 5 23:18:07 2007
|
|
RP
Join Date:
Sun Jun 3 04:00:34 2007
Posts:10
Reputation:10
|
RE: Magnetite Nanocrystals |
| They typically have more than one magnetosome chain, so they divide them and when they grow make new ones (this depends on a particular strain). |
| Created: Fri Jul 13 04:38:44 2007
|
|
RP
Join Date:
Sun Jun 3 04:00:34 2007
Posts:10
Reputation:10
|
RE: Magnetite Nanocrystals |
| yes, the bugs are amazing and people "fish" them in lakes and seas with magnets. The "whiskers" are called flaggela - they are used to actually move(swim) along the field lines. |
| Created: Fri Jul 13 04:40:10 2007
|
|
AB
Join Date:
Thu Jun 21 22:16:59 2007
Posts:6
Reputation:10
|
RE: Magnetite Nanocrystals |
interesting...I have a strong magnet, will try to fish in Lae of the Woods then.
Do you think there are some magnetic bugs there?
How about Hommer lake> |
| Created: Wed Jul 25 22:46:09 2007
|
|
| Pages: 1 2 |
