Visible and near-infrared backscattering spectroscopy for sizing spherical microparticles

cic.lugarDesarrolloCentro de Investigaciones Ópticas es
dc.titleVisible and near-infrared backscattering spectroscopy for sizing spherical microparticlesen
dcterms.abstractScattering 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.en
dcterms.creator.authorScaffardi, Lucía Beatrizes
dcterms.creator.authorVidela, Fabián Alfredoes
dcterms.creator.authorSchinca, Daniel Carloses
dcterms.extentp. 67-75es
dcterms.isPartOf.seriesApplied Opticsen
dcterms.licenseAttribution 4.0 International (BY 4.0)es
dcterms.publisherCentro de Investigaciones Ópticas (CIOP)es
dcterms.relation30 años (1977-2007): Centro de Investigaciones Ópticas (CIOp)es
dcterms.subjectparticle size determinationen
dcterms.subjectspectroscopic analysis of backscatteringen
dcterms.subjectwavelength intervalen
dcterms.subject.materiaCiencias Físicases
Paquete original
Mostrando1 - 1 de 1
Imagen en miniatura
29-Schinca-Visible and near-infrared.pdf
8.65 MB
Adobe Portable Document Format
Documento completo