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epitaxy |
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epitaxyProcess of growing a crystal of a particular orientation on top of another crystal. If both crystals are of the same material, the process is known as homoepitaxy; if the materials are different, it is known as heteroepitaxy. Common types of epitaxy include vapour phase, liquid phase, and solid phase, according to the source of the atoms being arranged on the substrate. Epitaxy is most frequently employed in the production of semiconductor wafers for use in the creation of integrated circuits. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| The group has employed molecular beam epitaxy to create first a quantum dot structure made of InAs (indiaum arsenide)/GaAs (gallium arsenide) and then a metal mask with a 0. A low density of InGaAs quantum dots (QDs), semiconductor nanostructures with 10 nm to 20 nm dimensions, is grown on GaAs by molecular beam epitaxy. By using an atom-deposition technique called molecular-beam epitaxy and by exploiting a tendency of indium atoms to bunch together, the researchers covered an entire chip with triangular arrays of exactly six indium atoms per patch of silicon 3 nm on a side. |
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