Montaño-Priede, José Luis; Sánchez-Iglesias, Ana; Mezzasalma, Stefano Antonio; Sancho-Parramon, Jordi; Grzelczak, Marek (2024) Quantifying Shape Transition in Anisotropic Plasmonic Nanoparticles through Geometric Inversion. Application to Gold Bipyramids. The Journal of Physical Chemistry Letters, 15 (14). pp. 3914-3922. ISSN 1948-7185
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Abstract
Unraveling the nuanced interplay between the morphology and the optical properties of plasmonic nanoparticles is crucial for targeted applications. Managing the relationship becomes significantly complex when dealing with anisotropic nanoparticles that defy a simple description using parameters like length, width, or aspect ratio. This complexity requires computationally intensive numerical modeling and advanced imaging techniques. To address these challenges, we propose a detailed structural parameter determination of gold nanoparticles using their two-dimensional projections (e.g., micrographs). Employing gold bipyramids (AuBPs) as a model morphology, we can determine their three-dimensional geometry and extract optical features computationally for comparison with the experimental data. To validate our inversion model’s effectiveness, we apply it to derive the structural parameters of AuBPs undergoing shape modification through oxidative etching. In summary, our findings allow for the precise characterization of structural parameters for plasmonic nanoparticles during shape transitions, potentially enhancing the comprehension of nanocrystal growth and optimizing plasmonic material design for various applications.
| Item Type: | Article | ||||||||
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| Uncontrolled Keywords: | plasmonic nanoparticles; plasmon resonance; gold bipyramids | ||||||||
| Subjects: | NATURAL SCIENCES > Physics > Atomic and Molecular Physics NATURAL SCIENCES > Physics > Condensed Matter Physics NATURAL SCIENCES > Chemistry > Physical Chemistry |
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| Divisions: | Division of Materials Physics | ||||||||
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| Depositing User: | Jordi Sancho Parramon | ||||||||
| Date Deposited: | 16 Jan 2026 14:11 | ||||||||
| URI: | http://fulir.irb.hr/id/eprint/10957 | ||||||||
| DOI: | 10.1021/acs.jpclett.4c00582 |
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