Self-assembling nanoparticles into holographic nanopatterns
Abstract
We demonstrate a method to self-assemble metal nanoparticles into two-dimensional lattices. Monodisperse cobalt nanoparticles were synthesized within inverse micelles of polystyrene-block-poly(2-vinylpyridine) copolymer in toluene. A periodic hole pattern of photoresist (PR) was fabricated on a GaAs substrate by holographic lithography. The nanoparticles as prepared above were self-assembled onto the PR nanopatterns by dip or spin casting. They were selectively positioned in the holes due to the capillary forces related to the pattern geometry. Our study reveals that self-assembled nanoparticles in two-dimensional lattices can be obtained with a controllable number of particles per lattice point.
- Publication:
-
Journal of Applied Physics
- Pub Date:
- May 2004
- DOI:
- 10.1063/1.1699494
- Bibcode:
- 2004JAP....95.5922L
- Keywords:
-
- 81.05.Lg;
- 61.41.+e;
- 61.46.+w;
- 68.47.Pe;
- 42.70.Ln;
- 85.40.Hp;
- Polymers and plastics;
- rubber;
- synthetic and natural fibers;
- organometallic and organic materials;
- Polymers elastomers and plastics;
- Langmuir-Blodgett films on solids;
- polymers on surfaces;
- biological molecules on surfaces;
- Holographic recording materials;
- optical storage media;
- Lithography masks and pattern transfer