Entropy-driven formation of a chiral liquid-crystalline phase of helical filaments
MetadataShow full item record
We study the liquid-crystalline phase behavior of a concentrated suspension of helical flagella isolated from Salmonella typhimurium. Flagella are prepared with different polymorphic states, some of which have a pronounced helical character while others assume a rodlike shape. We show that the static phase behavior and dynamics of chiral helices are very different when compared to simpler achiral hard rods. With increasing concentration, helical flagella undergo an entropy-driven first order phase transition to a liquid-crystalline state having a novel chiral symmetry.
Author Posting. © The Authors, 2006. This article is posted here by permission of American Physical Society for personal use, not for redistribution. The definitive version was published in Physical Review Letters 96 (2006): 018305, doi:10.1103/PhysRevLett.96.018305.
Suggested CitationPhysical Review Letters 96 (2006): 018305
Showing items related by title, author, creator and subject.
pH dependent isotropic to nematic phase transitions in graphene oxide dispersions reveal droplet liquid crystalline phases Tkacz, Rachel; Oldenbourg, Rudolf; Mehta, Shalin B.; Miansari, Morteza; Verma, Amitabh; Majumder, Mainak (2014-05)Size fractionation, amplified by the surface charge density of graphene oxide (GO) sheets, broadens the pH dependent isotropic (I) to nematic (N) phase transition in aqueous dispersions of graphene oxide (GO). In this ...
Ecosystem biogeochemistry considered as a distributed metabolic network ordered by maximum entropy production Vallino, Joseph J. (2009-09-18)We examine the application of the maximum entropy production principle for describing ecosystem biogeochemistry. Since ecosystems can be functionally stable despite changes in species composition, we utilize a distributed ...
Morozov, Andrey K.; Colosi, John A. (Acoustical Society of America, 2005-03)Parabolic equation numerical simulations of waveguide acoustical beam propagation in an ocean of Garrett–Munk internal waves are used to examine the range evolution of beam properties such as beamwidth (both spectral and ...