Unexpected electronic properties of micrometer-thick supracrystals of Au nanocrystals.
basic_science · Level V
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- Record sourced from PubMed, PMID 22448753.
- Also identified by DOI 10.1021/nl3001925.
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Abstract
We investigated the electronic properties of highly ordered three-dimensional colloidal crystals of gold nanocrystals (7 ± 0.4 nm), called supracrystals. Two kinds of Au supracrystals with typical thicknesses of 300 nm and 5 μm, respectively, are probed for the first time with scanning tunneling microscopy/spectroscopy at 5 K revealing similar power law behavior and showing homogeneous conductance with the fingerprint of isolated nanocrystal. Potential applications evading the size-related risks of nanocrystals could be then considered.