Icosahedral quasi-crystals

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In summary, icosahedral quasi-crystals are a type of non-periodic crystal structure with five-fold rotational symmetry. They differ from traditional crystals in their lack of periodicity and have unique properties such as high strength, low friction, and low thermal conductivity. These crystals are formed through a process called decagonal quasicrystalline phase transformation and have various applications in industries such as electronics, aerospace, and energy.
  • #1
peterjaybee
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Hello,

Please could someone explain what properties an icosahedral quasi crystal has which make it differ from a polygonal quasicrystal. (I assume it has something to do with rotational symmetry)

Regards,
Peter
 
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  • #2
reffer to the book "atomic and electronic structure of solids" by efthimios kaxiras

there you can find a brief but useful description of icosahedral crystals..

hope it helps
 
  • #3


Hello Peter,

Icosahedral quasi-crystals are a type of quasicrystal that have icosahedral symmetry, meaning they have rotational symmetry around five axes. This is different from polygonal quasicrystals, which have rotational symmetry around three axes.

This difference in rotational symmetry leads to different physical and chemical properties in icosahedral quasi-crystals. For example, they have a higher density compared to polygonal quasicrystals and can exhibit unique electronic and magnetic properties. Additionally, icosahedral quasi-crystals have a more complex and irregular atomic structure, which can make them stronger and more resistant to deformation.

I hope this helps to answer your question. Let me know if you have any further inquiries.


 

1. What are icosahedral quasi-crystals?

Icosahedral quasi-crystals are a type of non-periodic crystal structure that have a five-fold rotational symmetry. This means that the crystal looks the same when rotated by a fifth of a full rotation.

2. How are icosahedral quasi-crystals different from traditional crystals?

Icosahedral quasi-crystals differ from traditional crystals in their lack of periodicity. While traditional crystals have repeating patterns and symmetry, icosahedral quasi-crystals have a more complex and irregular structure.

3. What are the properties of icosahedral quasi-crystals?

Icosahedral quasi-crystals have unique properties such as high strength, low friction, and low thermal conductivity. They also have a high resistance to corrosion and can be used in various industries such as aerospace and electronics.

4. How are icosahedral quasi-crystals formed?

Icosahedral quasi-crystals are formed through a process called decagonal quasicrystalline phase transformation. This occurs when a traditional crystal is heated and then rapidly cooled, causing the atoms to arrange themselves in a non-periodic structure.

5. What are the applications of icosahedral quasi-crystals?

Icosahedral quasi-crystals have various applications in industries such as electronics, aerospace, and energy. They can be used in coatings for turbine blades, electronic components, and even in jewelry due to their unique properties and aesthetic appeal.

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