Difference between revisions of "Magnetotactic Bacteria"

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(Applications)
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==Applications==
 
==Applications==
Epoxy has basically limitless applications and can be seen in fields ranging from aerospace to electronics.  They are used as both electrical insulators when alone, and also electrical conductors when combined with silver.  They are used architecturally as a material for walls, ceilings, and especially floors.  They can be used as paintThey are also used for fastening bolts, and as castingsMoreover, epoxy as been used as a medium for art.
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Because magnetotactic bacteria are so small, yet have large colloids which are single domains, they have been used to identify the polarity of very small magnetic domains, such as those found in geological rocksAlso these colloids have a very tight range of lengths, being quite monodisperse, which may lead to future applicationsFinally, like in this paper, xxxxxx, there may be applications in the fact that the bacteria shield the magnetic forces of there magnetic colloids quite well.
  
 
==Economics==
 
==Economics==

Revision as of 23:03, 12 November 2009

Definition

Top and bottom images show magnetotactic bacteria with the magnetic particles within them. The middle image shows a magnetotactic bacteria with the magnetic colloids extracted.

Magnetotactic bacteria are a type of bacteria that contain the magnetosome organelle which, through biomineralization, produces paramagnetic iron oxide. The iron oxide forms forms magnetic, single-domain, colloids that during formation line up with the earths magnetic field. Having these nanoparticles inside the cell leads to a normal alignment of the bacteria towards the bottom of the ocean where more anaerobic conditions exist. The flagellum of these bacteria then propel it to these conditions where the bacteria thrive. They were first discovered in the 1960s.

Applications

Because magnetotactic bacteria are so small, yet have large colloids which are single domains, they have been used to identify the polarity of very small magnetic domains, such as those found in geological rocks. Also these colloids have a very tight range of lengths, being quite monodisperse, which may lead to future applications. Finally, like in this paper, xxxxxx, there may be applications in the fact that the bacteria shield the magnetic forces of there magnetic colloids quite well.

Economics

Epoxy is often used in the developing world for its uses in building. In fact, China accounts for 30% of the worldwide usage of epoxy ($15 billion world wide). The three largest producers of Epoxy are Hexion, Dow Chemical, and Huntsman's Corporation for Advanced Materials. Each of these companies allow the epoxy to be easily tuned for adhesive and mechanical properties using a variety of chemicals in addition to the basic monomers, such as things to increase or reduce viscosity.

References

http://pslc.ws/macrog/epoxy.htm

and other info gathered from a google search of "epoxy", including company websites.