Plasmon Controlled Shaping of Metal Nanoparticle Aggregates by Femtosecond Laser-Induced Melting
| Autor: | Francesco Toschi, Ilaria Fratoddi, Iole Venditti, Patrick O'Keeffe, Alessandra Ciavardini, R. Proietti Zaccaria, Daniele Catone, Alessandro Alabastri, Alessandra Paladini, Antonella Cartoni, L. Di Mario |
|---|---|
| Přispěvatelé: | Catone, D., Ciavardini, A., Di Mario, L., Paladini, A., Toschi, F., Cartoni, A., Fratoddi, I., Venditti, I., Alabastri, A., Proietti Zaccaria, R., O'Keeffe, P. |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Nanostructure
Materials science Nanoparticle 02 engineering and technology 010402 general chemistry 01 natural sciences Fluence Nanofabrication AuNp Nanomelting law.invention plasmon law General Materials Science Physical and Theoretical Chemistry femtosecond Plasmon business.industry 021001 nanoscience & nanotechnology Laser Thermoplasmonics laser 0104 chemical sciences Wavelength Femtosecond Optoelectronics Nanorod Materials Science (all) 0210 nano-technology business |
| Zdroj: | The journal of physical chemistry letters 9 (2018): 5002–5008. doi:10.1021/acs.jpclett.8b02117 info:cnr-pdr/source/autori:Catone D.; Ciavardini A.; Di Mario L.; Paladini A.; Toschi F.; Cartoni A.; Fratoddi I.; Venditti I.; Alabastri A.; Proietti Zaccaria R.; O'Keeffe P./titolo:Plasmon Controlled Shaping of Metal Nanoparticle Aggregates by Femtosecond Laser-Induced Melting/doi:10.1021%2Facs.jpclett.8b02117/rivista:The journal of physical chemistry letters/anno:2018/pagina_da:5002/pagina_a:5008/intervallo_pagine:5002–5008/volume:9 |
| DOI: | 10.1021/acs.jpclett.8b02117 |
| Popis: | In this work, we show how to control the morphology of femtosecond laser melted gold nanosphere aggregates. A careful choice of both laser fluence and wavelength makes it possible to selectively excite different aggregate substructures to produce larger spherical nanoparticles, nanorods, and nanoprisms or necklace-like 1D nanostructures in which the nanoparticles are interlinked by bridges. Finite integral technique calculations have been performed on the near-field concentration of light in the nanostructures which confirm the wavelength dependence of the light concentration and suggest that the resulting localized high intensities lead to nonthermal melting. We show that by tuning the wavelength of the melting light it is possible to choose the spatial extension of the ensembles of NPs heated thus allowing us to exhibit control over the morphology of the nanostructures formed by the melting process. By a proper combination of this method with self-assembly of chemically synthesized nanoparticles, one can envisage the development of an innovative high-throughput high-resolution nanofabrication technique. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|