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Hybrid nanocolloids with programmed three-dimensional shape and material composition

2013

Article

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Tuning the optical(1,2), electromagnetic(3,4) and mechanical properties of a material requires simultaneous control over its composition and shape(5). This is particularly challenging for complex structures at the nanoscale because surface-energy minimization generally causes small structures to be highly symmetric(5). Here we combine low-temperature shadow deposition with nanoscale patterning to realize nanocolloids with anisotropic three-dimensional shapes, feature sizes down to 20 nm and a wide choice of materials. We demonstrate the versatility of the fabrication scheme by growing three-dimensional hybrid nanostructures that contain several functional materials with the lowest possible symmetry, and by fabricating hundreds of billions of plasmonic nanohelices, which we use as chiral metafluids with record circular dichroism and tunable chiroptical properties.

Max Planck Press Release.

Author(s): Mark, Andrew G. and Gibbs, John G. and Lee, Tung-Chun and Fischer, Peer
Journal: NATURE MATERIALS
Volume: 12
Number (issue): 9
Pages: 802-807
Year: 2013

Department(s): Micro, Nano, and Molecular Systems
Bibtex Type: Article (article)

DOI: 10.1038/NMAT3685
Note: Max Planck Press Release.

Links: Video - Fabrication of Designer Nanostructures
Video:

BibTex

@article{ISI:000323417600016,
  title = {Hybrid nanocolloids with programmed three-dimensional shape and material composition},
  author = {Mark, Andrew G. and Gibbs, John G. and Lee, Tung-Chun and Fischer, Peer},
  journal = {NATURE MATERIALS},
  volume = {12},
  number = {9},
  pages = {802-807},
  year = {2013},
  note = {Max Planck Press Release.}
}