Hierarchical porous plasmonic metamaterials for reproducible ultrasensitive surface-enhanced Raman spectroscopy.
basic_science · Level V
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- Record sourced from PubMed, PMID 25534763.
- Also identified by DOI 10.1002/adma.201404107.
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Abstract
Hierarchical porous plasmonic metamaterials consisting of periodic nanoholes with tunable diameter and uniformly distributed mesopores over the bulk are developed as a new class of 3D surface-enhanced Raman spectroscopy (SERS) substrates. This multiscale architecture not only facilitates efficient cascaded electromagnetic enhancement but also provides an enormous number of Raman-active binding sites, exhibiting excellent reproducibility and ultrasensitive detection of aromatic molecules down to 10(-13) M.
Medical subject headings
- Crystallization
- Metal Nanoparticles
- Nanopores
- Spectrum Analysis, Raman
- Surface Plasmon Resonance