DataVXAdvanced Optical MaterialsPaper
journal article·2025-05Open access

Influence of the Gap Distance and Morphology on the Plasmon Modes of Gold Nanocube Dimers

Jesús Barrio, Ramon Manzorro, Ana Sánchez‐Iglesias, David Rodríguez‐San‐Miguel, Marc Coronado‐Puchau, Consuelo Moreno, Judith Langer, Antonio I. Fernández‐Domínguez, Susana Trasobares, Luis M. Liz‐Marzán, Felix Zamora, Beatriz H. Juárez

Advanced Optical Materials· Volume 13· Issue 15
Publisher pageOpen full text
Source abstract

Abstract

Abstract Plasmonic metallic nanostructures have gained significant attention due to their ability to confine light at the nanoscale. In this study, the influence of minor morphological variations by truncation of different planes on the plasmonic response of colloidal Au nanocube dimers and their separation (nanogap) is investigated by electron energy loss spectroscopy (EELS). To understand the impact of these factors, two different cube models for numerical simulations have been considered: one mimicking the truncation by {111} facets, and another mimicking their truncation by {110} ones. The experimental results, supported by numerical simulations, reveal two origins for the sensitivity of EELS spectra to nanostructure truncation: the plasmonic modes' dependence on facet geometry at the nanogap between Au nanocubes and the beam position's precision, which governs excitation efficiency. Notably, the nanogap distances between Au nanocubes are accurately measured using edge spread functions from High‐angle annular dark‐field scanning transmission electron microscopy (HAADF‐STEM) images, demonstrating that STEM mode provides superior precision compared to the more commonly used TEM modes. These findings contribute to a deeper understanding of the relationship between structural features and plasmonic behavior in Au nanocube dimers, crucial for the designing next‐generation plasmonic devices, including quantum plasmonic systems and SERS‐based sensors.
Source: crossref · Quality: baseline

Research context

Nanomaterials

OpenAlex topics: Gold and Silver Nanoparticles Synthesis and Applications · Plasmonic and Surface Plasmon Research · Nonlinear Optical Materials Studies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemical Engineering Imperial College London London SW7 2AZ UK

Department of Materials Science Metallurgical Engineering and Inorganic Chemistry Faculty of Sciences University of Cadiz Campus Universitario de Puerto Real, Puerto Real Cadiz 11510 Spain

Institute of Research on Electron Microscopy and Materials (IMEYMAT) Faculty of Sciences Campus Universitario de Puerto Real. University of Cádiz Puerto Real Cádiz 11510 Spain

Center for Materials Physics (CSIC‐UPV) Donostia‐San Sebastián 20018 Spain

Departamento de química inorgánica Universidad Autónoma de Madrid Madrid 28049 Spain

Institute for Advanced Research in Chemical Sciences (IAdChem) Universidad Autónoma de Madrid Madrid 28049 Spain

Instituto de Ciencia Molecular Universitat de València Catedrático José Beltrán 2 Paterna 46980 Spain

Departamento de Medicina Universitat de València Av. Blásco Ibáñez, 15 Valencia 46010 Spain

CIC biomaGUNE Basque Research and Technology Alliance (BRTA) Donostia‐San Sebastian 20014 Spain

Departamento de Física Teórica de la Materia Condensada Universidad Autónoma de Madrid Madrid 28049 Spain

Condensed Matter Physics Center (IFIMAC) Universidad Autónoma de Madrid Madrid 28049 Spain

Centro de Investigación Biomédica en Red Bioingeniería, Biomateriales y Nanomedicina (CIBER‐BBN) Donostia‐San Sebastián 20014 Spain

Cinbio University of Vigo Vigo 36310 Spain

Ikerbasque Basque Foundation for Science Bilbao 48009 Spain

Instituto de Ciencia de Materiales de Madrid ICMM Consejo Superior de Investigaciones Científicas, CSIC Sor Juana Inés de la Cruz, 3 Madrid 28049 Spain

References (51)

Show source-provided references
1. 10.1038/s41563-019-0290-y10.1038/s41563-019-0290-y ↗
2. Arrays of Plasmonic Nanoparticle Dimers with Defined Nanogap Spacers | ACS Nano https://pubs.acs.org/doi/10.1021/acsnano.9b04938(accessed: September 2024).
3. 10.1103/PhysRevB.80.11341110.1103/PhysRevB.80.113411 ↗
4. 10.1021/nn100869j10.1021/nn100869j ↗
5. 10.1039/C8TC03556C10.1039/C8TC03556C ↗
6. 10.1021/acsphotonics.8b0142410.1021/acsphotonics.8b01424 ↗
7. 10.1002/adom.20240092910.1002/adom.202400929 ↗
8. 10.1021/jz401269w10.1021/jz401269w ↗
9. 10.1002/adom.20210074810.1002/adom.202100748 ↗
10. 10.1021/nl080872f10.1021/nl080872f ↗
11. 10.1021/ja104174m10.1021/ja104174m ↗
12. 10.1002/adom.20220191110.1002/adom.202201911 ↗
13. 10.1039/C7CS00209B10.1039/C7CS00209B ↗
14. 10.1021/nl300130910.1021/nl3001309 ↗
15. 10.1038/nature1165310.1038/nature11653 ↗
16. 10.1126/science.124879710.1126/science.1248797 ↗
17. 10.1126/science.122482310.1126/science.1224823 ↗
18. 10.1038/ncomms1149510.1038/ncomms11495 ↗
19. 10.1126/sciadv.abj975210.1126/sciadv.abj9752 ↗
20. 10.1021/acs.nanolett.8b0297310.1021/acs.nanolett.8b02973 ↗
21. 10.1021/nl104410t10.1021/nl104410t ↗
22. 10.1002/smll.20110215210.1002/smll.201102152 ↗
23. 10.1016/S0927-7757(03)00156-010.1016/S0927-7757(03)00156-0 ↗
24. 10.1021/acsnano.4c0264410.1021/acsnano.4c02644 ↗
25. 10.1016/j.ultramic.2014.08.00510.1016/j.ultramic.2014.08.005 ↗
26. 10.1021/ma902035p10.1021/ma902035p ↗
27. 10.1002/smll.20110037110.1002/smll.201100371 ↗
28. 10.1016/j.cplett.2009.12.00210.1016/j.cplett.2009.12.002 ↗
29. 10.1021/acs.jpcc.0c0383010.1021/acs.jpcc.0c03830 ↗
30. 10.1021/nl302315g10.1021/nl302315g ↗
31. 10.1039/D1NA00114K10.1039/D1NA00114K ↗
32. 10.1021/nn900922z10.1021/nn900922z ↗
33. 10.1021/jp304753310.1021/jp3047533 ↗
34. 10.1021/ja062892u10.1021/ja062892u ↗
35. 10.1126/science.107722910.1126/science.1077229 ↗
36. 10.1016/j.matlet.2005.12.04510.1016/j.matlet.2005.12.045 ↗
37. 10.1039/b812376d10.1039/b812376d ↗
38. 10.1021/ja050107s10.1021/ja050107s ↗
39. Ultrathin PbS Sheets by Two‐Dimensional Oriented Attachment | Science https://www.science.org/doi/full/10.1126/science.1188035(accessed: September 2024).
40. 10.1103/PhysRevLett.100.10680410.1103/PhysRevLett.100.106804 ↗
41. 10.1021/nn402323t10.1021/nn402323t ↗
42. 10.1038/nature1797410.1038/nature17974 ↗
43. 10.1103/PhysRevLett.105.23390110.1103/PhysRevLett.105.233901 ↗
44. 10.1364/AO.37.00527110.1364/AO.37.005271 ↗
45. 10.1016/j.jcis.2022.02.05110.1016/j.jcis.2022.02.051 ↗
46. 10.1021/jp900648r10.1021/jp900648r ↗
47. 10.1021/jp06333810.1021/jp063338 ↗
48. 10.1021/jp050508u10.1021/jp050508u ↗
49. 10.1021/jacs.1c1324010.1021/jacs.1c13240 ↗
50. 10.1002/anie.20080613910.1002/anie.200806139 ↗
51. 10.1021/nn101484a10.1021/nn101484a ↗