Direct conversion of rheological compliance measurements into storage and loss moduli

Evans, R.M.L., Tassieri, M. , Auhl, D. and Waigh, T.A. (2009) Direct conversion of rheological compliance measurements into storage and loss moduli. Physical Review E, 80(1), (doi: 10.1103/PhysRevE.80.012501)

Abstract

We remove the need for Laplace/inverse-Laplace transformations of experimental data, by presenting a direct and straightforward mathematical procedure for obtaining frequency-dependent storage and loss moduli [G'(omega) and G ''(omega), respectively], from time-dependent experimental measurements. The procedure is applicable to ordinary rheological creep (stress-step) measurements, as well as all microrheological techniques, whether they access a Brownian mean-square displacement, or a forced compliance. Data can be substituted directly into our simple formula, thus eliminating traditional fitting and smoothing procedures that disguise relevant experimental noise

• Item Type: Articles
• Keywords: Complex fluids, Conversion, displacement, England, noise, Particle-tracking Microrheology, transformation
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Tassieri, Dr Manlio
• Authors: Evans, R.M.L., Tassieri, M., Auhl, D., and Waigh, T.A.
• College/School: College of Science and Engineering > School of Engineering > Biomedical Engineering; College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Journal Name: Physical Review E
• Publisher: American Physical Society
• ISSN: 1539-3755
• Data DOI: 10.5525/gla.researchdata.155