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top-down

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"The top-down approach can be summarized as "a set of tools designed to build a smaller set of tools". For example, a millimeter sized factory that builds micrometer sized factories which in turn can build nanometer sized devices" Thats kind of nonsense!!! In the Aricle Top-down you find under "Nanotechnology": "

Main article: Nanotechnology

Top-down and bottom-up are used as two approaches for assembling nanoscale materials and devices. Bottom-up approaches seek to have smaller (usually molecular) components arrange themselves into more complex assemblies, while top-down approaches seek to create nanoscale devices by using larger, externally-controlled ones to direct their assembly.

The top-down approach often uses the traditional workshop or microfabrication methods where externally-controlled tools are used to cut, mill and shape materials into the desired shape and order. Bottom-up approaches, in contrast, use the chemical properites of single molecules to cause single-molecule components to automatically arrange themselves into some useful conformation. These approaches utilize the concepts of molecular self-assembly and/or molecular recognition. See also Supramolecular chemistry.

Such bottom-up approaches should, broadly speaking, be able to produce devices in parallel and much cheaper than top-down methods, but could potentially be overwhelmed as the size and complexity of the desired assembly increases. "


Stud

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This is a really bad stud.

Name

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yes it is stud. An explanation what a "Nanoelectromechanical system" means is missing. The name means a combination of electrical pats (e.g. capacitor) and mechanical parts (e.g. oscillating Silicon beam) on one chip with structures smaller than 1µm (Mikro meter)==>Nano. Sorry for my worse english. Because of that, I dont edit this article myselfe.

Not just electronics, but mainly physics!

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Seriously, while electronics may be one possible application, there are many more fundamental aspects of nanomechanical systems. This should go into the category physics as well! Akhuettel (talk) 20:34, 19 May 2009 (UTC)[reply]

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