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Questions and Answers
In the context of nanotechnology, particles with one or more external dimensions between 1-100 nm are considered nanoparticles.
In the context of nanotechnology, particles with one or more external dimensions between 1-100 nm are considered nanoparticles.
True
Agglomerates in nanotechnology are defined as strongly bound or fused particles.
Agglomerates in nanotechnology are defined as strongly bound or fused particles.
False
Aggregates in nanotechnology are weakly bound together with a surface similar to single particles.
Aggregates in nanotechnology are weakly bound together with a surface similar to single particles.
False
The Commission Recommendation of 18 October 2011 on the definition of nanomaterial does not include the EU's definition of nanomaterial.
The Commission Recommendation of 18 October 2011 on the definition of nanomaterial does not include the EU's definition of nanomaterial.
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Nanotechnology-based drug targeting does not involve overcoming any barriers to reach the target.
Nanotechnology-based drug targeting does not involve overcoming any barriers to reach the target.
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Passive targeting in drug delivery refers to the use of nanoparticles that naturally accumulate at the target site.
Passive targeting in drug delivery refers to the use of nanoparticles that naturally accumulate at the target site.
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Fullerenes and graphene flakes are examples of nanoparticles that can have dimensions below 1 nm.
Fullerenes and graphene flakes are examples of nanoparticles that can have dimensions below 1 nm.
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Amidon's model for nanotechnology does not consider the size and surface characteristics of nanoparticles.
Amidon's model for nanotechnology does not consider the size and surface characteristics of nanoparticles.
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Regulatory aspects for nanotechnology-based products are not required to maintain quality, safety, and efficacy.
Regulatory aspects for nanotechnology-based products are not required to maintain quality, safety, and efficacy.
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Nanomedicine refers to the application of nanotechnology in medicine.
Nanomedicine refers to the application of nanotechnology in medicine.
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Study Notes
Nanomedicine Definition
- Nanomedicine is the application of "nano" in medicine.
Nanotechnology Definition
- "Nano" means 10^(-9) or 0.000000001 in math.
- Nanotechnology refers to the use of materials with dimensions between 1-100 nanometers.
Nanomaterial Definition
- A nanomaterial is a natural, incidental, or manufactured material containing particles (free, agglomerated, or aggregated) where ≥ 50% of the particles have one or more external dimensions between 1-100 nm.
- Examples of nanomaterials include fullerenes, graphene flakes, and single-wall carbon nanotubes.
Particle Definition
- A particle is a minute piece of matter with defined physical boundaries.
- An agglomerate is a weakly associated material with a surface similar to single particles.
- An aggregate is strongly bound or fused particles.
Measurement of Nanoparticles
- Key elements in measuring nanoparticles include light scattering, which can determine the presence of nano-objects.
- Other measurement options include cryoscopy, osmotic behavior, SEM, TEM, and AFM.
Properties of Nanoparticles
- Nanoparticles have unique properties due to their small size, such as semiconductor properties, magnetic properties, and alloy properties.
- The ratio of surface to volume is critical in nanoparticles.
EU Regulatory Aspects
- The EU has guidelines for cosmetics (EU Nr 1223/2009) and a commission recommendation on the definition of nanomaterial (2011).
- These regulations aim to maintain quality, safety, and efficacy in the use of nanomaterials.
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Description
Test your knowledge on the definition of nanomedicine, nanomaterials, and regulatory aspects related to nanotechnology in the field of chemistry. This quiz covers concepts such as the application of nanotechnology in medicine, nanomaterial characteristics, and regulatory guidelines in the EU.
