| Autor: |
Van Hoi Pham, Thi Hong Hanh Vu, Chinh Duc Vu, Huy Bui, Van Hai Pham, Thuy Van Nguyen, Thanh Binh Pham |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Communications in Physics. 31 |
| ISSN: |
0868-3166 |
| DOI: |
10.15625/0868-3166/15927 |
| Popis: |
In this work, porous silicon photonic crystals (PSi PhCs) covered by silver nanoparticles (AgNPs) were prepared as surface-enhanced Raman scattering (SERS) substrate to detect methylene blue (MB) at low concentrations. The limit of MB detection in water by the SERS substrate is evaluated to be 10\(^{-10}\) mol/L. The SERS signal intensities of 446 cm\(^{-1}\) and 1623 cm\(^{-1}\) peaks in SERS spectra of MB are fit in exponential functions of concentrations ranging from 10\(^{-4}\) to 10\(^{-10}\) mol/L. These results show that the AgNPs on PSi PhCs substrates could be applied in environmental sensing. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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