Visible wavelength surface-enhanced Raman spectroscopy from In-InP nanopillars for biomolecule detection
| Autor: | Anders J. Barlow, Peter J. Cumpson, Sabrina Tardio, Ian W. Fletcher, Billy J. Murdoch, Jose F. Portoles |
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| Rok vydání: | 2016 |
| Předmět: |
Physics and Astronomy (miscellaneous)
Chemistry business.industry Nanotechnology 02 engineering and technology Surface-enhanced Raman spectroscopy 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences symbols.namesake Sputtering symbols Optoelectronics Surface plasmon resonance 0210 nano-technology Raman spectroscopy business Plasmon Raman scattering Visible spectrum Nanopillar |
| Zdroj: | Applied Physics Letters. 109:253105 |
| ISSN: | 1077-3118 0003-6951 |
| Popis: | Visible wavelength surface-enhanced Raman spectroscopy (SERS) has been observed from bovine serum albumin (BSA) using In-InP nanopillars synthesised by Ar gas cluster ion beam sputtering of InP wafers. InP provides a high local refractive index for plasmonic In structures, which increases the wavelength of the In surface plasmon resonance. The Raman scattering signal was determined to be up to 285 times higher for BSA deposited onto In-InP nanopillars when compared with Si wafer substrates. These substrates demonstrate the label-free detection of biomolecules by visible wavelength SERS, without the use of noble metal particles. |
| Databáze: | OpenAIRE |
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