ISO/TR 22019:2019 ナノテクノロジー—ナノ材料を用いたトキシコキネティクス研究を実施するための考慮事項 | ページ 6

3.1

agglomerate

collection of weakly or medium strongly bound particles (3.12) where the resulting external surface area is similar to the sum of the surface areas of the individual components

Note 1 to entry: The forces holding an agglomerate together are weak forces, for example van der Waals forces or simple physical entanglement.

Note 2 to entry: Agglomerates are also termed secondary particles and the original source particles are termed primary particles.

[SOURCE:ISO 26824:2013, 1.2]

3.2

aggregate

particle (3.12) comprising strongly bonded or fused particles where the resulting external surface area is significantly smaller than the sum of surface areas of the individual components

Note 1 to entry: The forces holding an aggregate together are strong forces, for example covalent or ionic bonds, or those resulting from sintering or complex physical entanglement, or otherwise combined former primary particles.

Note 2 to entry: Aggregates are also termed secondary particles and the original source particles are termed primary particles.

[SOURCE:ISO 26824:2013, 1.3, modified — Note 1 adapted.]

3.3

nanoscale

length range approximately from 1 nm to 100 nm

Note 1 to entry: Properties that are not extrapolations from larger sizes are predominantly exhibited in this length range.

[SOURCE:ISO/TS 80004-1: 2015, 2.1]

3.4

nanotechnology

application of scientific knowledge to manipulate and control matter predominantly in the nanoscale (3.3) to make use of size- and structure-dependent properties and phenomena distinct from those associated with individual atoms or molecules, or extrapolation from larger sizes of the same material

Note 1 to entry: Manipulation and control includes material synthesis.

[SOURCE:ISO/TS 80004-1: 2015, 2.3]

3.5

nanomaterial

material with any external dimension in the nanoscale (3.3) or having internal structure or surface structure in the nanoscale

Note 1 to entry: This generic term is inclusive of nano-object (3.6) and nanostructured material (3.8) .

Note 2 to entry: See also 3.6 to 3.11.

[SOURCE:ISO/TS 80004-1: 2015, 2.4]

3.6

nano-object

discrete piece of material with one, two or three external dimensions in the nanoscale (3.3)

Note 1 to entry: The second and third external dimensions are orthogonal to the first dimension and to each other.

[SOURCE:ISO/TS 80004-1: 2015, 2.5]

3.7

nanostructure

composition of inter-related constituent parts in which one or more of those parts is a nanoscale (3.3) region

Note 1 to entry: A region is defined by a boundary representing a discontinuity in properties.

[SOURCE:ISO/TS 80004-1: 2015, 2.6]

3.8

nanostructured material

material having internal nanostructure (3.7) or surface nanostructure

Note 1 to entry: This definition does not exclude the possibility for a nano-object (3.6) to have internal structure or surface structure. If external dimension(s) are in the nanoscale (3.3) , the term nano-object is recommended.

[SOURCE:ISO/TS 80004-1: 2015, 2.7]

3.9

nanoparticle

nano-object (3.6) with all external dimensions in the nanoscale (3.3) where the lengths of the longest and the shortest axes of the nano-object do not differ significantly

Note 1 to entry: If the dimensions differ significantly (typically by more than 3 times), terms such as nanofibre (ISO/TS 80004-2:2017, 4.5) or nanoplate (ISO/TS 80004-2:2017 4.6) may be preferred to the term nanoparticle.

[SOURCE:ISO/TS 80004-2:2017, 4.4, modified — Note 1 to entry has been changed for clarification. ]

3.12

particle

minute piece of matter with defined physical boundaries

Note 1 to entry: A physical boundary can also be described as an interface.

Note 2 to entry: A particle can move as a unit.

Note 3 to entry: This general particle definition applies to nano-objects (3.6) .

[SOURCE:ISO 26824:2013, 1.1]

3.13

substance

single chemical element or compound, or a complex structure of compounds

[SOURCE:ISO 10993-9:2009, 3.6]