1-D nanoporous anodic alumina rugate filters by means of small current variations for real-time sensing applications
A rugate filter based on nanoporous anodic alumina was fabricated using an innovative sinusoidal current profile with small current variation. The resulting structure consisted of highly parallel pores with modulations of the pore diameter along the pore axis and with no branching. The effect of the...
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| Format: | Online |
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Springer
2014
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| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4082282/ |
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pubmed-40822822014-07-14 1-D nanoporous anodic alumina rugate filters by means of small current variations for real-time sensing applications Macias, Gerard Ferré-Borrull, Josep Pallarès, Josep Marsal, Lluís F Nano Express A rugate filter based on nanoporous anodic alumina was fabricated using an innovative sinusoidal current profile with small current variation. The resulting structure consisted of highly parallel pores with modulations of the pore diameter along the pore axis and with no branching. The effect of the period time and the pore widening post-treatment was studied. From reflectance measurements, it was seen that the position of the reflection band can be tuned by adjusting the period time and the width by pore-widening post-treatments. We tested one of the rugate filters by infiltrating the structure with EtOH and water in order to evaluate its sensing capabilities. This method allows the fabrication of complex in-depth modulated nanoporous anodic alumina structures that open up the possibility of new kinds of alumina-based optical sensing devices. Springer 2014-06-25 /pmc/articles/PMC4082282/ /pubmed/25024680 http://dx.doi.org/10.1186/1556-276X-9-315 Text en Copyright © 2014 Macias et al.; licensee Springer. http://creativecommons.org/licenses/by/4.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. |
| repository_type |
Open Access Journal |
| institution_category |
Foreign Institution |
| institution |
US National Center for Biotechnology Information |
| building |
NCBI PubMed |
| collection |
Online Access |
| language |
English |
| format |
Online |
| author |
Macias, Gerard Ferré-Borrull, Josep Pallarès, Josep Marsal, Lluís F |
| spellingShingle |
Macias, Gerard Ferré-Borrull, Josep Pallarès, Josep Marsal, Lluís F 1-D nanoporous anodic alumina rugate filters by means of small current variations for real-time sensing applications |
| author_facet |
Macias, Gerard Ferré-Borrull, Josep Pallarès, Josep Marsal, Lluís F |
| author_sort |
Macias, Gerard |
| title |
1-D nanoporous anodic alumina rugate filters by means of small current variations for real-time sensing applications |
| title_short |
1-D nanoporous anodic alumina rugate filters by means of small current variations for real-time sensing applications |
| title_full |
1-D nanoporous anodic alumina rugate filters by means of small current variations for real-time sensing applications |
| title_fullStr |
1-D nanoporous anodic alumina rugate filters by means of small current variations for real-time sensing applications |
| title_full_unstemmed |
1-D nanoporous anodic alumina rugate filters by means of small current variations for real-time sensing applications |
| title_sort |
1-d nanoporous anodic alumina rugate filters by means of small current variations for real-time sensing applications |
| description |
A rugate filter based on nanoporous anodic alumina was fabricated using an innovative sinusoidal current profile with small current variation. The resulting structure consisted of highly parallel pores with modulations of the pore diameter along the pore axis and with no branching. The effect of the period time and the pore widening post-treatment was studied. From reflectance measurements, it was seen that the position of the reflection band can be tuned by adjusting the period time and the width by pore-widening post-treatments. We tested one of the rugate filters by infiltrating the structure with EtOH and water in order to evaluate its sensing capabilities. This method allows the fabrication of complex in-depth modulated nanoporous anodic alumina structures that open up the possibility of new kinds of alumina-based optical sensing devices. |
| publisher |
Springer |
| publishDate |
2014 |
| url |
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4082282/ |
| _version_ |
1613108386133442560 |