Single-Molecule Nonresonant Wide-Field Surface-Enhanced Raman Scattering from Ferroelectrically Defined Au Nanoparticle Microarrays
| Autor: | Nebras Al-Attar, Michele Manzo, James H. Rice, Katia Gallo, Rusul M. Al-Shammari, Brian J. Rodriguez |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
General Chemical Engineering Lithium niobate Nanoparticle 02 engineering and technology Substrate (electronics) 010402 general chemistry 01 natural sciences Lithium-niobate Article lcsh:Chemistry chemistry.chemical_compound symbols.namesake Power-law analysis Polarization Molecule Surface-enhanced Raman scattering Polarization (electrochemistry) Microscale chemistry business.industry General Chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences lcsh:QD1-999 chemistry symbols Optoelectronics 0210 nano-technology business Raman scattering Excitation |
| Zdroj: | ACS Omega ACS Omega, Vol 3, Iss 3, Pp 3165-3172 (2018) |
| ISSN: | 2470-1343 |
| Popis: | Single-molecule detection by surface-enhanced Raman scattering (SERS) is a powerful spectroscopic technique that is of interest for the sensor development field. An important aspect of optimizing the materials used in SERS-based sensors is the ability to have a high density of "hot spots" that enhance the SERS sensitivity to the single-molecule level. Photodeposition of gold (Au) nanoparticles through electric-field-directed self-assembly on a periodically proton-exchanged lithium niobate (PPELN) substrate provides conditions to form well-ordered microscale features consisting of closely packed Au nanoparticles. The resulting Au nanoparticle microstructure arrays (microarrays) are plasmon-active and support nonresonant single-molecule SERS at ultralow concentrations ( |
| Databáze: | OpenAIRE |
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