Title :
Determination of the shear moduli of agarose gel using novel optical measurements
Author :
Guertin, Ashley ; Lee, Chi-Kwan
Author_Institution :
Franklin W. Olin Coll. of Eng., Needham, MA, USA
Abstract :
The objective of this study was to measure viscoelastic shear (storage and loss) moduli of low concentrations of agarose gel using hyper-frequency viscoelastic spectroscopy which is a non-contacting optical method. Using a Rheospectris C500, measurements were made in an excitation frequency range of 10-1000 Hz. It was found that the magnitudes of the moduli increased with frequency. Favorable comparisons were found to values determined using dynamic mechanical analysis.
Keywords :
biomechanics; molecular biophysics; polymer gels; proteins; shear modulus; viscoelasticity; Rheospectris C500; agarose gel concentrations; dynamic mechanical analysis; excitation frequency range; frequency 10 Hz to 1000 Hz; hyperfrequency viscoelastic spectroscopy; loss moduli; noncontacting optical method; optical measurements; storage moduli; viscoelastic shear moduli; Electron tubes; Frequency measurement; Geometry; Loss measurement; Materials; Optical variables measurement; Spectroscopy; agarose; biomaterials; dynamic mechanical analysis; viscoelasticity;
Conference_Titel :
Bioengineering Conference (NEBEC), 2014 40th Annual Northeast
Conference_Location :
Boston, MA
DOI :
10.1109/NEBEC.2014.6972805
