دورية أكاديمية
Nature Inspired Plasmonic Structures: Influence of Structural Characteristics on Sensing Capability
| العنوان: | Nature Inspired Plasmonic Structures: Influence of Structural Characteristics on Sensing Capability |
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| المؤلفون: | Gerardo Perozziello, Patrizio Candeloro, Maria Laura Coluccio, Godind Das, Loredana Rocca, Salvatore Andrea Pullano, Antonino Secondo Fiorillo, Mario De Stefano, Enzo Di Fabrizio |
| المصدر: | Applied Sciences, Vol 8, Iss 5, p 668 (2018) |
| بيانات النشر: | MDPI AG, 2018. |
| سنة النشر: | 2018 |
| المجموعة: | LCC:Technology LCC:Engineering (General). Civil engineering (General) LCC:Biology (General) LCC:Physics LCC:Chemistry |
| مصطلحات موضوعية: | optical sensors, plasmonics, nanostructures, Technology, Engineering (General). Civil engineering (General), TA1-2040, Biology (General), QH301-705.5, Physics, QC1-999, Chemistry, QD1-999 |
| الوصف: | Surface enhanced Raman scattering (SERS) is a powerful analytical technique that allows the enhancement of a Raman signal in a molecule or molecular assemblies placed in the proximity of nanostructured metallic surfaces, due to plasmonic effects. However, laboratory methods to obtain of these prototypes are time-consuming, expensive and they do not always lead to the desired result. In this work, we analyse structures existing in nature that show, on a nanoscale, characteristic conformations of photonic crystals. We demonstrate that these structures, if covered with gold, change into plasmonic nanostructures and are able to sustain the SERS effect. We study three different structures with this property: opal, a hydrated amorphous form of silica (SiO2·nH2O); diatoms, a kind of unicellular alga; and peacock tail feather. Rhodamine 6G (down to 10−12 M) is used to evaluate their capability to increase the Raman signal. These results allow us to define an alternative way to obtain a high sensitivity in Raman spectroscopy, currently achieved by a long and expensive technique, and to fabricate inexpensive nanoplasmonic structures which could be integrated into optical sensors. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2076-3417 |
| العلاقة: | http://www.mdpi.com/2076-3417/8/5/668Test; https://doaj.org/toc/2076-3417Test |
| DOI: | 10.3390/app8050668 |
| الوصول الحر: | https://doaj.org/article/0d1d908f3e0645f1aa8adb308b157da0Test |
| رقم الانضمام: | edsdoj.0d1d908f3e0645f1aa8adb308b157da0 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 20763417 |
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| DOI: | 10.3390/app8050668 |