Measurement of latex microparticle size by dynamic speckle technique

•Temporal evolution of speckle patterns is used as an non-invasive and low-cost technique for sizing dielectric microparticles.•A direct experiment on speckle patterns of a drying aqueous drop of standard latex microparticles was conducted.•Overall experiment constitutes a proof of concept of the di...

Full description

Saved in:
Bibliographic Details
Published in:Optics and lasers in engineering 2021-05, Vol.140, p.106528, Article 106528
Main Authors: Mendoza-Herrera, Luis J., Schinca, Daniel C., Scaffardi, Lucía B., Grumel, Eduardo E., Trivi, Marcelo
Format: Article
Language:English
Subjects:
Dynamic speckle
Latex microparticles
particle sizing
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•Temporal evolution of speckle patterns is used as an non-invasive and low-cost technique for sizing dielectric microparticles.•A direct experiment on speckle patterns of a drying aqueous drop of standard latex microparticles was conducted.•Overall experiment constitutes a proof of concept of the direct application of the speckle phenomena to microparticle sizing. We propose a method for dielectric microparticles size measurement based on the temporal evolution of speckle pattern. We conducted experiments using aqueous suspension of different standard spherical latex particles that span a size range between 5 µm and 100 µm. To analyze the speckle pattern data, we use different and independent qualitative and quantitative algorithms. We built calibration curves between the actual size of the particles provided by the manufacturer and the corresponding descriptors derived from each quantitative algorithm of the speckle measurement technique. We show that this technique provides a useful, non-invasive and low-cost tool for determining the diameter of dielectric microparticles.
ISSN:0143-8166
1873-0302
DOI:10.1016/j.optlaseng.2020.106528