The role of metal nanoparticles in remote release of encapsulated materials

Nano Lett. 2005 Jul;5(7):1371-7. doi: 10.1021/nl050693n.

Abstract

Laser mediated remote release of encapsulated fluorescently labeled polymers from nanoengineered polyelectrolyte multilayer capsules containing gold sulfide core/gold shell nanoparticles in their walls is observed in real time on a single capsule level. We have developed a method for measuring the temperature increase and have quantitatively investigated the influence of absorption, size, and surface density of metal nanoparticles using an analytical model. Experimental measurements and numerical simulations agree with the model. The treatment presented in this work is of general nature, and it is applicable to any system where nanoparticles are used as absorbing centers. Potential biomedical applications are highlighted.

Publication types

  • Evaluation Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Coated Materials, Biocompatible / analysis
  • Coated Materials, Biocompatible / chemistry*
  • Computer Simulation
  • Delayed-Action Preparations / analysis
  • Delayed-Action Preparations / chemistry*
  • Diffusion
  • Drug Carriers / analysis
  • Drug Carriers / chemistry*
  • Materials Testing / methods*
  • Metals / analysis
  • Metals / chemistry*
  • Models, Chemical*
  • Nanotubes / analysis
  • Nanotubes / chemistry*
  • Nanotubes / ultrastructure*
  • Particle Size
  • Temperature

Substances

  • Coated Materials, Biocompatible
  • Delayed-Action Preparations
  • Drug Carriers
  • Metals