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In mineralogy and crystallography, a crystal structure is a unique arrangement of atoms or molecules in a crystalline liquid or solid.

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crystalline structure of Si wafers used for MEMS

When they say that we have a {1 0 0} single crystal wafer, I know that the surface normal to the wafer is oriented in the <1 0 0> family direction, but if I draw a line on the wafer, parallel to my pr …
Ghosal_C's user avatar
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2 votes
1 answer
873 views

How is the crystal direction important for etching silicon surfaces?

I am a student of masters study with a background only in electrical engineering, but I have studied Miller indices and crystallographic planes and directions, personally, to help myself understand th …
Ghosal_C's user avatar
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2 votes
1 answer
207 views

Etching around corners

In etching of mono silicon, why does the etching process around the corners differ from the etching process around the flat edges? What brings about this difference and is there some way that MEMS eng …
Ghosal_C's user avatar
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If I have an alloy of two materials, will I have a chemical reaction between the two materials

I have always been told that an alloy is a mixture without chemical interference between the materials, but if I look at highly doped silicon (doped with Aluminum via ion implantation and then lattice …
Ghosal_C's user avatar
  • 501
2 votes
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79 views

What system of nomenclature can I use to indicate the positions of specific kinds of atoms o...

I was reading a journal based on SiC reconstructions, and they seem to mention that every dangling bond in the $(1\times 1)$ unreconstructed Si face or the $(0001)$ direction bonds up with a Si adatom …
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