title: Hierarchical porous plasmonic metamaterials for reproducible ultrasensitive surface-enhanced Raman spectroscopy.
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.
authors.affiliation: School of Chemistry, Monash University, Clayton, VIC, 3800, Australia.
authors.forename: Xinyi
authors.initials: X
authors.lastname: Zhang
authors.forename: Yuanhui
authors.initials: Y
authors.lastname: Zheng
authors.forename: Xin
authors.initials: X
authors.lastname: Liu
authors.forename: Wei
authors.initials: W
authors.lastname: Lu
authors.forename: Jiyan
authors.initials: J
authors.lastname: Dai
authors.forename: Dang Yuan
authors.initials: DY
authors.lastname: Lei
authors.forename: Douglas R
authors.initials: DR
authors.lastname: MacFarlane
mesh_terms: D003460:Crystallization / Q000379:methods*; D006046:Gold / Q000737:chemistry; D008027:Light; D008422:Materials Testing; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure*; D058608:Nanopores / Q000648:ultrastructure*; D015203:Reproducibility of Results; D012542:Scattering, Radiation; D012680:Sensitivity and Specificity; D013059:Spectrum Analysis, Raman / Q000379:methods*; D020349:Surface Plasmon Resonance / Q000379:methods*
chemical_list: D006046:Gold
keywords: electromagnetic fields; hierarchical porous metamaterials; liquid-crystal-templating; localized surface plasmons; surface-enhanced Raman spectroscopy