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Sunday, October 16, 2016

#353 Nano-confinement

A concept of nano-confinement and its effect on the properties of solids and operation of solid-state devices is a recurring theme in the disccussion of semiconductor materials and devices these days. This is because with nano-confinement, or in other words atomic scale confinement, different phenomena control properties of solids as compared to their bulk form.


To assign a physical meaning to the term nano-confinement let’s remind ourselves that the diameter of atom depends on the number of electrons it encompasses and varies from element to element from roughly 0.1 nm to 0.5 nm where nm (nanometer) is a unit of length (1 nm = 10-9 m or in other words 1 billionth of the meter). The diameter of silicon atom  is 0.22 nm. As a reference the average size of bacteria is on the order of 1,000 nm, red blood cells about 6,000 – 8,000 nm and only viruses are sized in the low nanometer regime at about 20 nm.

Posted by Jerzy Ruzyllo at 04:22 PM | Semiconductors | Link is the personal blog of Jerzy Ruzyllo. With over 35 years of experience in academic research and teaching in the area of semiconductor engineering (currently holding position of a Distinguished Professor of Electrical Engineering and Professor of Materials Science and Engineering at Penn State University), he has a unique perspective on the developments in this progress driving technical domain and enjoys blogging about it.

With over 2000 terms defined and explained, Semiconductor Glossary is the most complete reference in the field of semiconductors on the market today.

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