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Keywords:

  • Hollow particles;
  • Nanoparticles, metal;
  • Nanospheres;
  • Silver;
  • Surface plasmon resonance
Thumbnail image of graphical abstract

Hollow platinum nanospheres (see figure) have been fabricated by optical excavation of the core silver metal of Ag@Pt core/shell nanoparticles. The surface plasmon resonances of the shell platinum metal were excited with picosecond laser pulses of 1064 nm. Thermalized photon energy induces the silver to melt and effuse rapidly through the shell, producing smooth hollow platinum nanospheres.