authors |
Domingues, RP; Rodrigues, MS; Proenca, M; Costa, D; Alves, E; Barradas, NP; Oliveira, FJ; Silva, RF; Borges, J; Vaz, F |
nationality |
International |
journal |
VACUUM |
author keywords |
Localized Surface Plasmon Resonance; Thin films; Magnetron sputtering; Au nanoparticles; MN matrix |
keywords |
SURFACE-PLASMON RESONANCE; NANOCOMPOSITE FILMS; GOLD NANOPARTICLES; HOST MATRIX; DEPOSITION; GROWTH; MICROSTRUCTURE; EVOLUTION; SENSORS |
abstract |
Nanocomposite thin films, with noble nanoparticles dispersed in a dielectric matrix, are known to present unique optical properties. Based on the Localized Surface Plasmon Resonance (LSPR) phenomenon, these "nanoplasmonic" materials are the basis of a wide range of technological applications, namely (bio)molecular LSPR-sensors. They are regulated by the concentration, size, shape and distribution of the nanoparticles and dielectric environment properties. In this work, the possibility of using aluminium nitride (AlN) as a host dielectric matrix for LSPR films was evaluated. For this purpose, nanocomposite Au:AlN films were prepared by magnetron sputtering, followed by thermal annealing to promote the growth of the nanoparticles. Three sets of films were deposited with atomic Au concentrations of 2.2, 4.4 and 6.0 at.%. LSPR bands appeared from the temperature of 500 degrees C, with resonance positions of 520-540 nm. The films showed potential to be tested in LSPR-sensing applications due to their optical responses. |
publisher |
PERGAMON-ELSEVIER SCIENCE LTD |
issn |
0042-207X |
year published |
2018 |
volume |
157 |
beginning page |
414 |
ending page |
421 |
digital object identifier (doi) |
10.1016/j.vacuum.2018.09.013 |
web of science category |
Materials Science, Multidisciplinary; Physics, Applied |
subject category |
Materials Science; Physics |
unique article identifier |
WOS:000449569600057
|
ciceco authors
impact metrics
journal analysis (jcr 2019):
|
journal impact factor |
2.906 |
5 year journal impact factor |
2.425 |
category normalized journal impact factor percentile |
60.257 |
dimensions (citation analysis):
|
|
altmetrics (social interaction):
|
|
|