Plasmonic Nanoparticles and Nanowires: Design, Fabrication and Application in Sensing.
Repository Usage Stats
This study involves two aspects of our investigations of plasmonics-active systems: (i) theoretical and simulation studies and (ii) experimental fabrication of plasmonics-active nanostructures. Two types of nanostructures are selected as the model systems for their unique plasmonics properties: (1) nanoparticles and (2) nanowires on substrate. Special focus is devoted to regions where the electromagnetic field is strongly concentrated by the metallic nanostructures or between nanostructures. The theoretical investigations deal with dimers of nanoparticles and nanoshells using a semi-analytical method based on a multipole expansion (ME) and the finite-element method (FEM) in order to determine the electromagnetic enhancement, especially at the interface areas of two adjacent nanoparticles. The experimental study involves the design of plasmonics-active nanowire arrays on substrates that can provide efficient electromagnetic enhancement in regions around and between the nanostructures. Fabrication of these nanowire structures over large chip-scale areas (from a few millimeters to a few centimeters) as well as FDTD simulations to estimate the EM fields between the nanowires are described. The application of these nanowire chips using surface-enhanced Raman scattering (SERS) for detection of chemicals and labeled DNA molecules is described to illustrate the potential of the plasmonics chips for sensing.
Published Version (Please cite this version)
Vo-Dinh, Tuan, Anuj Dhawan, Stephen J Norton, Christopher G Khoury, Hsin-Neng Wang, Veena Misra and Michael D Gerhold (2010). Plasmonic Nanoparticles and Nanowires: Design, Fabrication and Application in Sensing. J Phys Chem C Nanomater Interfaces, 114(16). pp. 7480–7488. 10.1021/jp911355q Retrieved from https://hdl.handle.net/10161/4077.
This is constructed from limited available data and may be imprecise. To cite this article, please review & use the official citation provided by the journal.
Unless otherwise indicated, scholarly articles published by Duke faculty members are made available here with a CC-BY-NC (Creative Commons Attribution Non-Commercial) license, as enabled by the Duke Open Access Policy. If you wish to use the materials in ways not already permitted under CC-BY-NC, please consult the copyright owner. Other materials are made available here through the author’s grant of a non-exclusive license to make their work openly accessible.