Saturday, June 23, 2012

Nanometrology, Nanorulers, & Nanomanufacturing

Technology today is improving at a very quick pace. Every few months, a smaller thinner, more powerful version of a product comes out.
This rate is not going to stop, so technology is going to become much more powerful than before, but the workings inside the technology is going to have to change. It will need to become more organized, smaller, and most importantly, more precise.

Macbook Evolution
As it is, technology is precise up to the micron scale, but as technology gets small and nanotechnology becomes more and more banal, precision at the nano-level will have to be achieved. For that reason, nanometrology is an important sub-field of nanotechnology. Nanometrology is the study of measuring objects at the nanoscale. Easier said than done.

At MIT, the most precise, as well as the quickest way of measuring objects at the nanoscale is the nanoruler. The nanoruler not only measures distances, but it is used for grating*.  Normally, when technology businesses what to grate products at tiny distances, it uses a precise tool with a diamond point. The nanoruler actually moves the product the needed distance and then uses a laser to grate the technology. This is called nanomanufacturing.
(Source) (source)

"The Nanoruler can pattern gratings of lines and spaces separated by only a few hundred nanometers, or billionths of a meter, across a surface 300 millimeters in diameter. It does so with a precision of less than one nanometer. "That is the equivalent of shooting a target the size of a nickel in Manhattan all the way from San Francisco," said Carl G. Chen (Ph.D. 2003), one of Schattenburg's colleagues." (source)
MIT Stata Center
* grating is any regularly spaced collection of essentially identical, parallel, elongated elements


Nanomanufacturing is also defined as "the ability to fabricate, by directed or self-assembly methods, functional structures or devices at the atomic or molecular level," (p. 67) from the report  National Nanotechnology Initiative  (NNI) Instrumentation and Metrology for Nanotechnology. An example of this definition is of the new ways of building nanogears in which they can actually build themselves. (See Post on Nanogears)

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