Difference between revisions of "Micelle"

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[[Image:micelle.jpg|400px|thumb|right| Example of micelle structure compared to a liposome and a lipid bilayer sheet.]]
 
[[Image:micelle.jpg|400px|thumb|right| Example of micelle structure compared to a liposome and a lipid bilayer sheet.]]
  
Velcro is a trademarked 'hook and loop' fastener.  It works by pressing both sides of the fastener together.  One side is composed of small hooks, and the is composed of small loopsWhen pressed together the hooks tend to snare the loops and attachment occurs.  Velcro is most commonly made of nylon and/or polyesterDepending on how well the hooks are ensnared in the loops a single square inch of velcro can hold up to 90lbs.
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A micelle is the self assembled sphere formed from surfactants in a hydrophilic liquid such as water.  It is formed when surfactant hydrocarbons that have a hydrophilic charged head group and a long  hydrophobic tail aggregateThe hydrophobic tails are attracted to each other and try to get out of their hydrophilic environment by bunching upThis leaves the hydrophobic heads pointing outwards where they are content in their environment.
  
 
==Applications==
 
==Applications==

Revision as of 02:10, 29 September 2009

Definition

Example of micelle structure compared to a liposome and a lipid bilayer sheet.

A micelle is the self assembled sphere formed from surfactants in a hydrophilic liquid such as water. It is formed when surfactant hydrocarbons that have a hydrophilic charged head group and a long hydrophobic tail aggregate. The hydrophobic tails are attracted to each other and try to get out of their hydrophilic environment by bunching up. This leaves the hydrophobic heads pointing outwards where they are content in their environment.

Applications

Velcro is used any time two things need to be temporarily fastened together. For normal use it is seen in shoes, jackets, and gloves. However there are much more exotic uses of Velcro as well. NASA uses velcro in space for many different applications. For example the astronaut space suits are fastened with velcro. Also, when sitting down the astronauts attach themselves to the chair with velcro.

Future Applications

A research group in Korea is attempting to make a nano sized equivalent to velcro. They have produced and published a paper called Shape-Tunable Polymer Nanofibrillar Structures by Oblique Electron Beam Irradiation that discusses their research.

References

http://www.velcro.com/