Using optical tweezers for the characterization of polyelectrolyte solutions with very low viscoelasticity

Pommella, A., Preziosi, V., Caserta, S., Cooper, J.M. , Guido, S. and Tassieri, M. (2013) Using optical tweezers for the characterization of polyelectrolyte solutions with very low viscoelasticity. Langmuir, 29(29), pp. 9224-9230. (doi:10.1021/la4015948)

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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.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Tassieri, Dr Manlio and Cooper, Professor Jonathan
Authors: Pommella, A., Preziosi, V., Caserta, S., Cooper, J.M., Guido, S., and Tassieri, M.
College/School:College of Science and Engineering > School of Engineering > Biomedical Engineering
Journal Name:Langmuir
Publisher:American Chemical Society
ISSN:0743-7463
ISSN (Online):1520-5827
Copyright Holders:Copyright © 2013 American Chemical Society
First Published:First published in Langmuir 29(29):9224-9230
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
534472Rheology at the Microscale: New Tools for Bio-analysisManlio TassieriEngineering & Physical Sciences Research Council (EPSRC)10216/101ENG - BIOMEDICAL ENGINEERING