2024-03-29T02:08:56Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/651152022-09-30T10:31:41Zcom_10261_93com_10261_4col_10261_346
Sculpting nanometer-sized light landscape with plasmonic nanocolumns
Marty, R.
Arbouet, A.
Girard, Christian
Margueritat, J.
Gonzalo, J.
Afonso, Carmen N.
Plasmonic structures are commonly used to both confine and enhance surface electromagnetic fields. In the past ten years, their peculiar optical properties have given rise to many promising applications ranging from high density data storage to surface optical trapping. In this context, we investigated both far-field and near-field optical response of a collection of densely packed silver nanocolumns embedded in amorphous aluminum oxide using the discrete dipole approximation. In the far field, a good fit of the calculated to the experimental absorption spectra can only be achieved when in addition to interaction between neighboring nanocolumns, a nanorod shape with periodic shrinks mimicking the experimental morphology of the nanocolumns is used. In the near field, modulated field intensities following the nanocolumns distribution and tunable with the incident wavelength are predicted outside the region occupied by the nanocolumns. This plasmonic image transfer has a resolution of approximately 1.8D where D is the diameter of the nanocolumns that in our case is 2.4 nm. © 2009 American Institute of Physics.
Peer Reviewed
2013-01-25T11:50:27Z
2013-01-25T11:50:27Z
2009
2013-01-25T11:50:27Z
artículo
http://purl.org/coar/resource_type/c_6501
doi: 10.1063/1.3271794
issn: 0021-9606
Journal of Chemical Physics 131: 224707 (2009)
http://hdl.handle.net/10261/65115
10.1063/1.3271794
en
open
American Institute of Physics