Cholesteric liquid crystals in living matter

M Mitov - Soft matter, 2017 - pubs.rsc.org
Liquid crystals play an important role in biology because the combination of order and
mobility is a basic requirement for self-organisation and structure formation in living systems …

Chiral systems made from DNA

D Winogradoff, PY Li, H Joshi, L Quednau… - Advanced …, 2021 - Wiley Online Library
The very chemical structure of DNA that enables biological heredity and evolution has non‐
trivial implications for the self‐organization of DNA molecules into larger assemblies and …

Confinement-induced liquid crystalline transitions in amyloid fibril cholesteric tactoids

G Nyström, M Arcari, R Mezzenga - Nature nanotechnology, 2018 - nature.com
Chirality is ubiquitous in nature and plays crucial roles in biology, medicine, physics and
materials science. Understanding and controlling chirality is therefore an important research …

Amyloid fibrils length controls shape and structure of nematic and cholesteric tactoids

M Bagnani, G Nystrom, C De Michele, R Mezzenga - ACS nano, 2018 - ACS Publications
Amyloid fibrils offer the possibility of controlling their contour length, aspect ratio, and length
distribution, without affecting other structural parameters. Here we show that a fine control in …

Controlling chirality with helix inversion in cholesteric liquid crystals

N Katsonis, E Lacaze, A Ferrarini - Journal of materials chemistry, 2012 - pubs.rsc.org
The helical organization of cholesteric liquid crystals is omnipresent in living matter.
Achieving control over the structure of the cholesteric helix consequently holds great …

Self-assembly of bifunctional patchy particles with anisotropic shape into polymers chains: Theory, simulations, and experiments

C De Michele, T Bellini, F Sciortino - Macromolecules, 2012 - ACS Publications
Concentrated solutions of short blunt-ended DNA duplexes, as short as 6 base pairs, are
known to order into the nematic liquid crystal phases. This self-assembly is due to the …

Self-assembly of short DNA duplexes: from a coarse-grained model to experiments through a theoretical link

C De Michele, L Rovigatti, T Bellini, F Sciortino - Soft Matter, 2012 - pubs.rsc.org
Short blunt-ended DNA duplexes comprising 6 to 20 base pairs self-assemble into
polydisperse semi-flexible chains due to hydrophobic stacking interactions between terminal …

Liquid crystalline filamentous biological colloids: Analogies and differences

G Nyström, R Mezzenga - Current Opinion in Colloid & Interface Science, 2018 - Elsevier
Highlights•We discuss nanocellulose, amyloid fibrils, filamentous viruses.•For each class the
main chemical composition is reviewed.•We discuss the structure and mesoscopic …

Hierarchical propagation of chirality through reversible polymerization: the cholesteric phase of DNA oligomers

C De Michele, G Zanchetta, T Bellini, E Frezza… - ACS Macro …, 2016 - ACS Publications
Unveiling the subtle rules that control the buildup of macroscopic chirality starting from chiral
molecular elements is a challenge for theory and computations. In this context, a remarkable …

Left or right cholesterics? A matter of helix handedness and curliness

E Frezza, A Ferrarini, HB Kolli, A Giacometti… - Physical Chemistry …, 2014 - pubs.rsc.org
Using an Onsager-like theory, we have investigated the relationship between the
morphology of hard helical particles and the features (pitch and handedness) of the …