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Luminescent quantum dots are classified as nanomaterials if their external dimensions are between 1 nm and 100 nm.
Luminescent quantum dots are classified as nanomaterials if their external dimensions are between 1 nm and 100 nm.
True
According to the European Commission, fullerenes, graphene flakes, and single-wall carbon nanotubes with external dimensions below 1 nm are not considered nanomaterials.
According to the European Commission, fullerenes, graphene flakes, and single-wall carbon nanotubes with external dimensions below 1 nm are not considered nanomaterials.
False
The specific surface per unit volume threshold for defining a material as a nanomaterial is below 60 m2/cm3 according to the European Commission's recommendation.
The specific surface per unit volume threshold for defining a material as a nanomaterial is below 60 m2/cm3 according to the European Commission's recommendation.
False
Nano-specific properties include magnetic, optical, electronic, and chemical properties.
Nano-specific properties include magnetic, optical, electronic, and chemical properties.
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If 100% of the particles in a material have external dimensions in the range 1 nm - 100 nm, it meets the EC definition of a nanomaterial.
If 100% of the particles in a material have external dimensions in the range 1 nm - 100 nm, it meets the EC definition of a nanomaterial.
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Bottom-up synthesis of nanomaterials typically involves starting from individual atoms or molecules and building the structure upwards.
Bottom-up synthesis of nanomaterials typically involves starting from individual atoms or molecules and building the structure upwards.
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Top-down techniques in nanomaterial synthesis refer to breaking down larger structures into smaller nanoscale components.
Top-down techniques in nanomaterial synthesis refer to breaking down larger structures into smaller nanoscale components.
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Nanoparticles are considered nanomaterials only if they have a specific surface per unit volume above 60 m2/cm3.
Nanoparticles are considered nanomaterials only if they have a specific surface per unit volume above 60 m2/cm3.
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Bacterium can be classified as nanomaterials if their size falls within the range of 1 nm - 100 nm as per the EC definition.
Bacterium can be classified as nanomaterials if their size falls within the range of 1 nm - 100 nm as per the EC definition.
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Human-made sand deposits do not qualify as nanomaterials based on the European Commission's definition.
Human-made sand deposits do not qualify as nanomaterials based on the European Commission's definition.
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