One- and two-photon induced growth of ligand coated nanoparticles for 2 & 3D metal patterning

Francesco Stellacci, Christina A. Bauer, Timo Meyer-Friedrichsen, Wim Wenseleers, Valérie Alain, Stephen M. Kuebler, Stephanie J K Pond, Yadong Zhang, Seth R. Marder, Joseph W. Perry

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Ligand-coated metallic nanoparticles are powerful new materials for nano-electronic and photonics applications. They can be readily synthesized and their stability and solubility allows them to be cast in complex composite materials or self-assembled into quasi-ordered films. We demonstrate that, in the presence of reducing dyes with a large two-photon cross-section and metal salts, it is possible to induce the growth of metal nanoparticles in composite films under optical excitation or irradiation with electrons. We demonstrate further that continuous metal structures can be obtained via laser irradiation of the composites and that, with two-photon excitation. 3D structures can be fabricated. Silver, copper, and gold microstructures have been fabricated via two-photon excitation. The composition of our polymeric precursor is described in detail. In order to achieve highly-homogeneous solid-state solutions of nanoparticles dissolved in polyvinylcarbazole (PVK), we have synthesized tailor-made nanoparticles on which we have introduced a mixture of carbazoyl-terminated octylthiol and simple octylthiols.. Preliminary experiments on e-beam lithography show that thin films of nanoparticles doped with suitable dyes and metal salts are efficient precursors form metal structures.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsG. Cao, W.P. Kirk
Number of pages7
Publication statusPublished - 2002
EventNanoscale Optics and Applications - Seattle, WA, United States
Duration: Jul 8 2002Jul 9 2002


OtherNanoscale Optics and Applications
Country/TerritoryUnited States
CitySeattle, WA


  • Lithography
  • Metal nanoparticles
  • Microfabrication
  • Polymer composites
  • Silver structures
  • Two-photon absorption

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics


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