Using Optical Tweezers for the Characterization of Polyelectrolyte Solutions with Very Low Viscoelasticity

Overview

Journal Langmuir

Publisher American Chemical Society

Specialty Chemistry

Date 2013 Jun 22

PMID 23786307

Citations 1

Authors

Angelo Pommella

Valentina Preziosi

Sergio Caserta

Jonathan M Cooper

Stefano Guido

Manlio Tassieri

Affiliations

Soon will be listed here.

Abstract

Recently, optical tweezing has been used to provide a method for microrheology addressed to measure the rheological properties of small volumes of samples. In this work, we corroborate this emerging field of microrheology by using these optical methods for the characterization of polyelectrolyte solutions with very low viscoelasticity. The influence of polyelectrolyte (i.e., polyacrylamide, PAM) concentration, specifically its aging, of the salt concentration is shown. The close agreement of the technique with classical bulk rheological measurements is demonstrated, illustrating the advantages of the technique.

Citing Articles

Microrheology with optical tweezers: measuring the relative viscosity of solutions 'at a glance'.

Tassieri M, Del Giudice F, Robertson E, Jain N, Fries B, Wilson R Sci Rep. 2015; 5:8831.

PMID: 25743468 PMC: 4894396. DOI: 10.1038/srep08831.

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