Microrheology of DNA hydrogel gelling and melting on cooling.
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ABSTRACT:
SUBMITTER: Fernandez-Castanon J
PROVIDER: S-EPMC6295875 | biostudies-literature | 2018 Aug
REPOSITORIES: biostudies-literature
Publications
Microrheology of DNA hydrogel gelling and melting on cooling.
Fernandez-Castanon Javier J Bianchi Silvio S Saglimbeni Filippo F Di Leonardo Roberto R Sciortino Francesco F
Soft matter 20180628 31
We present systematic characterisation by means of dynamic light scattering and particle tracking techniques of the viscosity and of the linear viscoelastic moduli, G'(ω) and G''(ω), for two different DNA hydrogels. These thermoreversible systems are composed of tetravalent DNA-made nanostars whose sticky sequence is designed to provide controlled interparticle bonding. While the first system forms a gel on cooling, the second one has been programmed to behave as a re-entrant gel, turning again ...[more]
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