3. The impact of nanotechnology
3.1 Toxicity
Because of their size, nanoparticles and nano-sized structures have different properties to macroscopic particles and conventional materials. Surface effects become more important than volume effects. This increase in surface area leads to greater reactivity. So, while a lump of gold is practically chemically inert, a gold nanoparticle is highly reactive. When we consider the negative impact that an activity or object can have, we need to differentiate between danger and risk....
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The impact of nanotechnology
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