| dc.creator | Scaffardi, Lucía Beatriz | |
| dc.creator | Videla, Fabián Alfredo | |
| dc.creator | Schinca, Daniel Carlos | |
| dc.date | 2007 | |
| dc.date | 2019-08-15T14:43:39Z | |
| dc.identifier | http://sedici.unlp.edu.ar/handle/10915/79195 | |
| dc.description | Scattering is a useful tool for the determination of particle size in solution. In particular, spectroscopic analysis of backscattering renders the possibility of a simplified experimental setup and direct data processing using Mie theory. We show that a simple technique based on near-infrared (NIR) backscattering spectroscopy together with the development of the corresponding algorithm based on Fourier transform (FT) and Mie theory are a powerful tool for sizing microparticles in the range from 8 to 60 microm diameter. There are three wavelength intervals in the NIR, within which different diameter ranges were analyzed. In each one, the FT yields a coarse diameter value with an uncertainty dependent on the wavelength range. A more accurate value is obtained by further applying cross correlation between experimental and theoretical spectra. This latter step reduces the uncertainty in diameter determination between 30% and 40%, depending on wavelength interval and particle diameter. These results extend previous information on visible backscattering spectroscopy applied to sizing microparticles in the range between 1 and 24 mum diameter. This technique could be the basis for the construction of a portable and practical instrument. | |
| dc.description | Facultad de Ingeniería | |
| dc.format | application/pdf | |
| dc.format | 67-75 | |
| dc.language | en | |
| dc.rights | http://creativecommons.org/licenses/by-nc-sa/4.0/ | |
| dc.rights | Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) | |
| dc.subject | Ingeniería | |
| dc.subject | particle size determination | |
| dc.subject | spectroscopic analysis of backscattering | |
| dc.subject | wavelength interval | |
| dc.title | Visible and near-infrared backscattering spectroscopy for sizing spherical microparticles | |
| dc.type | Articulo | |
| dc.type | Articulo | |
