Microrheology of non mulberry silk varieties by optical tweezer and video microscopy based techniques

Subramanya, G. and Sharath Ananthamurthy, and Yogesha, and Raghu, A. and Siddaraju, G. N. (2011) Microrheology of non mulberry silk varieties by optical tweezer and video microscopy based techniques. arXiv preprint arXiv:1102.3035.

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Official URL: http://eprints.uni-mysore.ac.in/id/eprint/15274

Abstract

We have carried out a comparative study of the microrheological properties of silk fibroin solutions formed from a variety of silks indigenous to the Indian subcontinent. We present the measured viscoelastic moduli of Tasar silk fibroin solution using both a single and dual optical tweezer at 0.16% and 0.25% (w/v). The bandwidth of the measurements carried out using optical tweezers is extended down to the lower frequency regime by a video microscopy measurement. Further, we have measured the viscoelastic moduli of Eri and Muga varieties of silk fibroin solutions at a higher concentration (1.00% w/v) limiting the tool of measurement to video microscopy, as the reduced optical transparencies of these solutions at higher concentration preclude an optical tweezer based investigation. The choice of a higher concentration of fibroin solution of the latter silk varieties is so as to enable a comparison of the shear moduli obtained from optical methods with their corresponding fibre stiffness obtained from wide angle X-ray scattering data. We report a correlation between the microstructure and microrheological parameters of these silk varieties for the concentration of fibroin solutions studied

Item Type: Article
Subjects: Physical Sciences > Physics
Divisions: PG Campuses > Manasagangotri, Mysore > Physics
Depositing User: Kodandarama
Date Deposited: 24 Sep 2013 05:50
Last Modified: 11 Sep 2015 05:18
URI: http://eprints.uni-mysore.ac.in/id/eprint/15274

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