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První standard o terminologii v nanotechnologiích
Vydáno dne 23. 08. 2007 (4529 přečtení)

ASTM International, otevřené forum pro mezinárodní standardy, vydalo prvý standard vztahující se na nanotechnologie. Nový standard E 2456: "Terminologie v nanotechnlogiích" byl 1.10.2006 schválen výborem ASTM E 56 pro nanotechnologie. Autoři standardu vyjádřili přesvědčení, že nový standard bude využíván jak v oblasti vzdělávání a výzkumu, tak i v průmyslu, medicíně a dalších odvětvích.

Uvádíme v angličtině nejdůležitější část standardu "Terminologie":

agglomerate - in nanotechnology, a group of particles held together by relatively weak forces (for example, Van der Waals or capillary), that may break apart into smaller particles upon processing, for example.

aggregate — in nanotechnology, a discrete group of particles in which the various individual components are not easily broken apart, such as in the case of primary particles that are strongly bonded together (for example, fused, sintered, or metallically bonded particles).

fine particle — in nanotechnology, a particle smaller than about 2.5 micrometers and larger than about 0.1 micrometers in size.

nano — (1) The SI definition, a prefix used to form decimal submultiples of the SI unit “meter”, designating a factor of 10 -9 denoted by the symbol “n”. (2) Pertaining to things on a scale of approximately 1 to 100 nanometers (nm). (3) A prefix referring to an activity, material, process or device that pertains to a field of knowledge defined by nanotechnology and nanoscience.

nanoparticle — in nanotechnology, a sub-classification of ultrafine particle with lengths in two or three dimensions greater than 0.001 micrometer (1 nanometer) and smaller than about 0.1 micrometer (100 nanometers) and which may or may not exhibit a size-related intensive property.

nanoscale — having one or more dimensions from approxi-mately 1 to 100 nanometers (nm).

nanoscience - the study of nanoscale materials, processes, phenomena, or devices.

nanostructured — containing physically or chemically distinguishable components, at least one of which is nanoscale in one or more dimensions.

nanotechnology — a term referring to a wide range of technologies that measure, manipulate, or incorporate mate-rials and/or features with at least one dimension between approximately 1 and 100 nanometers (nm). Such applications exploit the properties, distinct from bulk/macroscopic systems, of nanoscale components.

non-transitive nanoparticle — in nanotechnology, a nano-particle that does not exhibit size-related intensive proper-ties.

particle — in nanotechnology, a small object that behaves as a whole unit in terms of its transport and properties.

transitive nanoparticle — in nanotechnology, a nanoparticle exhibiting a size-related intensive property that differs sig-nificantly from that observed in fine particles or bulk materials.

ultrafine particle — in nanotechnology, a particle ranging in size from approximately 0.1 micrometer (100 nanometers) to 0.001 micrometers (1 nanometer).



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