Teitl: Quantitative Optical Microspectroscopy, Electron Microscopy, and Modelling of Individual Silver Nanocubes Reveals Surface Compositional Changes at the Nanoscale - data
Dyfyniad
Wang Y, Zilli A, Sztranyovszky Z, et al. (2020). Quantitative Optical Microspectroscopy, Electron Microscopy, and Modelling of Individual Silver Nanocubes Reveals Surface Compositional Changes at the Nanoscale - data. Cardiff University. https://doi.org/10.17035/d.2019.0083359483
Hawliau Mynediad: Darperir Data dan drwydded Creative Commons Attribution (CC BY 4.0)
Dull Mynediad: I anfon cais i gael y data hwn, ebostiwch opendata@caerdydd.ac.uk
Crewyr y Set Ddata o Brifysgol Caerdydd
Manylion y Set Ddata
Cyhoeddwr: Cardiff University
Dyddiad (y flwyddyn) pryd y daeth y data ar gael i'r cyhoedd: 2020
Fformat y data: .java, .jpg, .html, .m, .mat, .mph, .opj, .opju, .pdf, .png, .txt, .tiff
Meddalwedd ofynnol: .mph and .java files are Comsol 4.4 models. .m and .mat files are Matlab scripts and data sets. opj and .opju files are Origin projects. Advice on how to partially access these files without a license is provided in Data_Description.html
Amcangyfrif o gyfanswm maint storio'r set ddata: Llai nag 1 gigabeit
Nifer y ffeiliau yn y set ddata: 282
DOI : 10.17035/d.2019.0083359483
DOI URL: http://doi.org/10.17035/d.2019.0083359483
This dataset, provided as a single zip archive, contains data related to the article: "Quantitative Optical Microspectroscopy, Electron Microscopy, and Modelling of Individual Silver Nanocubes Reveals Surface Compositional Changes at the Nanoscale", Nanoscale Advances 2020 (DOI: 10.1039/D0NA00059K). This work reports (i) a sample preparation methodology which allows correlating transmission electron microscopy (TEM) and optical micro-spectroscopy performed in different dielectric environments on a single nano-object; and (ii) an analysis method, applicable to a broad range of nano-systems, for analysing the spectroscopic data in order to accurately quantify the optical scattering and absorption cross section magnitude. (i) and (ii) are jointly demonstrated on a widely studied nanoparticle system: Colloidal silver cubes (75 nm side). By comparing the measured cross sections to numerical simulations based on the cube geometry determined via TEM for each cube, we assess on one hand the accuracy of the cross section measurements, and on the other hand how adequately the model describes the system. By systematically varying the main geometric and material parameters of the system, we find out that assuming a thin (~2 nm) tarnish layer has formed on the cube surface brings about a good agreement between simulation and experiment in both studied environments. In contrast, a layer of dielectric contaminant deposited on the surface – a hypothesis often invoked in literature – could not match the main resonance peak position and amplitude at the same time. While in this specific case tarnishing could be verified as well by other more direct chemically-specific techniques, our study aims at exemplifying what kind of knowledge can be gained by correlating a thorough optical characterization of the same nano-object in different environments to its structural characterization. This dataset complements the article cited above and the associated supplementary information. It is meant to facilitate other researchers to thoroughly assess our work; and to help them performing quantitative cross section measurements on their own optical microscope with the methodology we propose. Specifically, we include in the data set: The base folder of the archive contains a HTML document called “Data_Description" which includes a brief description of each item of the dataset and its path in the folder tree. It also includes two "Figure key" section pointing to the data corresponding to each figure of the article and supplementary information.
Disgrifiad
Allweddeiriau
Nanoparticles, Nanoplasmonics, Optical cross-sections, Rayleigh scattering, Single-particle microscopy
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