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3.2.1 What is nanotechnology?

There is no consensus on a definition for nanotechnology and the scope of the science it encompasses. This makes it quite challenging to predict "the world market" for nanotechnology or products with functional components in the nanometre range or products working with a precision in the nanometre range.

However, if the geometry size in at least one dimension is reduced to a critical value below 100 nanometers, most fundamental physical properties, depending on the material, change. Each property has a critical length scale, and with a nanoscale building block being made smaller than the critical length scale, it is possible to control the internal and surface chemistry property of nanomaterial, their atomic structure and their assembly. It is further possible to engineer properties and functionalities in completely new ways. Fine adjustment is possible by altering the sizes of those nano building blocks.

Therefore, in the following the term nanotechnology product refers to this definition:

1.   Products with a functional component with controlled geometry size below 100 nanometres in at least one dimension, and innovative characteristics caused by this critical dimension.

2.   Equipment for analytical or manipulation purpose that allows controlled fabrication, movement or measurement resolution with a precision below 100 nanometres.

Obviously, only in few cases does such a product consist of nanoscale building blocks alone, without any macroscopic element. Since the value of the nanotechnology contribution to such a product is difficult to estimate, it is only possible to consider the market price value of the end product. This clearly has implications for the determination of the overall market size.

Therefore, we define the smallest unit that can be commercially sold in the marketplace as a "nanotechnology product". Consequently, the market figures in this study are based on the market price of the smallest commercially available units with functional nanotechnology components.

Characteristics of Nanomaterials

Nanotechnology is fundamentally changing the way materials and devices will be produced in the future. The ability to synthesise nanoscale building blocks with precisely controlled size and composition and then to assemble them into larger structures with unique properties and functions will not only revolutionise segments of the materials manufacturing industry^[3],[4]. Fig. 1 illustrates nanomaterials and nanostructures by their reduced dimensionality.^[5]

{picture:P11;Fig. 1: Nanomaterials and nanostructures classified by their reduced dimensionality; with courtesy from Dr. Werner Grünwald, Bosch GmbH;center}