Why metals for nano

  • #1

Main Question or Discussion Point

Fairly straightforward question: Why are nanoparticles generally made using metal, that too generally using gold, silver etc?
 

Answers and Replies

  • #2
I think it's because it's relatively easy. Any physics department can quite readily set up a lab to produce and measure metal nanoparticles. But I suppose the technical reason is that metals can melt and form droplets, which then solidify as nanoparticles. Ceramics and organic materials don't necessarily melt and evaporate as well.
 
  • #3
alxm
Science Advisor
1,842
9
Yeah, I'm no nanoperson, but I'd go with 'ease'. Faraday famously figured out how to make gold and silver nanoparticles 150 years ago.
 
  • #4
Ease of formation is not the only reason. These nanoparticles have use as biosensors and other lab-on-chip sensors due to the phenomenon of surface plasmon resonance.
 

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