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TITLE:
Wet Chemical Engineering of Nanostructured GRIN Lenses - imarina:9388735

URV's Author/s:Alvarez Puebla, Ramon Angel / Pazos Pérez, Nicolás Carlos / Turino, Mariacristina
Author, as appears in the article.:Becerril-Castro, I Brian; Turino, Mariacristina; Pazos-Perez, Nicolas; Xiaofei, Xiao; Levato, Tadzio; Maier, Stefan A; Alvarez-Puebla, Ramon A; Giannini, Vincenzo
Author's mail:nicolas.pazos@urv.cat
mariacristina.turino@estudiants.urv.cat
ramon.alvarez@urv.cat
Author identifier:0000-0002-2326-4231
0000-0003-3053-4970
0000-0003-4770-5756
Journal publication year:2024
Publication Type:Journal Publications
APA:Becerril-Castro, I Brian; Turino, Mariacristina; Pazos-Perez, Nicolas; Xiaofei, Xiao; Levato, Tadzio; Maier, Stefan A; Alvarez-Puebla, Ramon A; Gianni (2024). Wet Chemical Engineering of Nanostructured GRIN Lenses. Advanced Optical Materials, 12(20), -. DOI: 10.1002/adom.202400485
Papper original source:Advanced Optical Materials. 12 (20):
Abstract:Gradient-index (GRIN) lenses have long been recognized for their importance in optics as a result of their ability to manipulate light. However, traditional GRIN lenses are limited on a scale of tens of microns, impeding their integration into nanoscale optical devices. This study presents a groundbreaking self-assembled method that overcomes this limitation, allowing for constructing GRIN lenses at an extremely small dimension. The self-assembly process offers several advantages, including creating highly precise, scalable, cost-effective, and complex structures that eliminate the need for intricate and time-consuming manual assembly. By engineering densely packed arrays of metallic nanoparticles, exceptional control over the local refractive index has been achieved. This is accomplished by layer-by-layer assembly of gold nanoparticles of different sizes over silica beads. A GRIN lens light-sink is built where light is preferentially directed toward the center, which is corroborated by measuring the fluorescence of Rhodamine B (RhB) in the inside. Unlike traditional bulky macroscopic GRIN lenses, light-sinks boast a size under 2.5 mu m. Notably, the self-focusing effects of this design allowed us to track the growth of single-nanoparticle layers using SERS (Surface-Enhanced Raman Spectroscopy). These results pave the way for designing and developing lens-like devices at the nanoscale, allowing unprecedented light manipulation. By engineering densely packed arrays of metallic nanoparticles, a GRIN lens light-sink is built where light is preferentially directed toward the center. Unlike traditional bulky macroscopic GRIN lenses, this light-sink features a size under 2.5 mu m, with exceptional control over the local refractive index. image
Article's DOI:10.1002/adom.202400485
Link to the original source:https://onlinelibrary.wiley.com/doi/10.1002/adom.202400485
Papper version:info:eu-repo/semantics/publishedVersion
licence for use:https://creativecommons.org/licenses/by/3.0/es/
Department:Química Física i Inorgànica
Licence document URL:https://repositori.urv.cat/ca/proteccio-de-dades/
Thematic Areas:Atomic and molecular physics, and optics
Electronic, optical and magnetic materials
Materials science, multidisciplinary
Optics
Keywords:Grin lens
Hierarchical plasmonic nanostructures
Nanolense
Nanolenses
Entity:Universitat Rovira i Virgili
Record's date:2024-11-02
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