• Publications
  • Influence
What is the origin of chirality in the cholesteric phase of virus suspensions?
Surprisingly, the fd-PEG suspensions not only continue to exhibit a cholesteric phase, which means that the grafted polymer does not screen all chiral interactions between rods, but paradoxically the cholesterolic pitch of this sterically stabilized fd -PEG system varies with ionic strength.
Chiral nematic phase of suspensions of rodlike viruses: left-handed phase helicity from a right-handed molecular helix.
The phase organization of charged, filamentous virus called M13 is explained as the result of the competition between contributions of opposite handedness, deriving from best packing of viral particles and electrostatic interparticle repulsions.
Liquid Crystallinity and Dimensions of Surfactant-Stabilized Sheets of Reduced Graphene Oxide.
The addition of surfactants in appropriate conditions is used to stabilize the RGO flakes against aggregation maintaining their ability to form water-based liquid crystals.
Nematic droplets in aqueous dispersions of carbon nanotubes.
From the scatter in the data, it is deduced that the surface tension of the coexisting isotropic and nematic phases must be extremely low, that is, of the order of nN/m.
Face-on oriented bilayer of two discotic columnar liquid crystals for organic donor-acceptor heterojunction.
In this work, we report the achievement of a homeotropically (or face-on) oriented bilayer formed by a pair of discotic materials designed with specific properties: selective solubility, adjusted
Tuning chirality in the self-assembly of rod-like viruses by chemical surface modifications
Filamentous viruses of similar molecular and subunitary structure can form either a liquid crystalline nematic phase or a chiral nematic – also called cholesteric – phase, which is an elegant example
Liquid crystals of carbon nanotubes and graphene
Recent methodologies that have been developed to achieve large monodomains of nematic liquid crystals and new methodologies for the still challenging characterization of such materials are presented.
Thermotropic orientational order of discotic liquid crystals in nanochannels: an optical polarimetry study and a Landau-de Gennes analysis.
Optical polarimetry measurements of the orientational order of a discotic liquid crystal based on a pyrene derivative confined in parallelly aligned nanochannels as a function of temperature, channel radius and surface chemistry reveal a competition of radial and axial columnar orders.
Hard-Rod Behavior in Dense Mesophases of Semiflexible and Rigid Charged Viruses
  • E. Grelet
  • Physics, Materials Science
  • 23 June 2014
Suspensions of colloidal particles self-organize spontaneously into different states, displaying phase transitions that can be driven by entropy alone. Such mesoscopic particles usually exhibit phase