Dynamics of topological defects and structural synchronization in a forming periodic tissue

@article{Beliaev2021DynamicsOT,
  title={Dynamics of topological defects and structural synchronization in a forming periodic tissue},
  author={Maksim Beliaev and D. Z{\"o}llner and Alexandra Pacureanu and Paul Zaslansky and Ilia Zlotnikov},
  journal={Nature Physics},
  year={2021},
  pages={1-6}
}
Living organisms form a large variety of hierarchically structured extracellular functional tissues. Remarkably, these materials exhibit regularity and structural coherence across multiple length scales, far beyond the size of a single cell. Here, synchrotron-based nanotomographic imaging in combination with machine-learning-based segmentation is used to reveal the structural synchronization process of nacre forming in the shell of the mollusc Unio pictorum . We show that the emergence of this… 
5 Citations
The mesoscale order of nacreous pearls
TLDR
It is found that mollusks strike a balance between preserving translational symmetry and minimizing thickness variation of layers by creating a paracrystal with medium-range order by quantifying its structural coherence across entire pearl specimens.
Observation of Backflow during the Anihilation of Topologocal Defects in Freely Suspended Smectic Films
Freely suspended films in the smectic C phase are excellent templates for the study of topological defect dynamics. It is well known that, during the annihilation of a pair of disclinations with
Soft x-ray linear dichroic ptychography: the study of crystal orientation in biominerals
Here we present soft X-ray linear dichroic ptychography developed at the COherent Scattering and MICroscopy (COSMIC) beamline at the Advanced Light Source (ALS) by studying biominerals—complex 3D
Hyperspectral interference tomography of nacre
TLDR
An optical technique is invented that rapidly and nondestructively extracts nanoscale structural information across large samples of nacre (mother-of-pearl) and other layered materials by combining multiangle and polarization-resolved hyperspectral imaging with optical-interference modeling.
The Mesoscale Crystallinity of Nacreous Pearls
A pearl’s distinguished beauty and toughness is attributable to the periodic stacking of aragonite tablets known as nacre. Nacre is a naturally occurring mesocrystal that remarkably arises in the

References

SHOWING 1-10 OF 32 REFERENCES
Crystal growth kinetics as an architectural constraint on the evolution of molluscan shells
TLDR
The physical model presented here sheds a new light on the evolutionary aspect of molluscan shell ultrastructural fabrication and suggests that the repeated “discovery” of some mineral morphologies partially reflects a series of architectural constraints provided by biomineral growth kinetics.
Quantification of sheet nacre morphogenesis using X-ray nanotomography and deep learning.
TLDR
This study establishes a workflow for high-resolution three-dimensional analysis of fine highly-mineralized biological tissues while providing a detailed analytical view on nacre morphogenesis.
Spiral interface: A reinforcing mechanism for laminated composite materials learned from nature
Abstract Helical structures are ubiquitous in nature at length scales of a wide range. In this paper, we studied a helical architecture called microscopic screw dislocation (μ-SD), which is
Thermodynamic Aspects of Molluscan Shell Ultrastructural Morphogenesis
Over the years, molluscan shells have become an exemplar model system to study the process of mineral formation by living organisms, the process of biomineralization. Typically, the shells consist of
Organic–inorganic interfaces and spiral growth in nacre
TLDR
A spiral growth model is proposed that accounts for both vertical propagation via helices that surround numerous screw dislocation cores and simultaneous lateral growth of aragonite sheet structure and may aid in creating novel organic–inorganic micro/nano composites through synthetic or biomineralization pathways.
Spiral and target patterns in bivalve nacre manifest a natural excitable medium from layer growth of a biological liquid crystal
TLDR
It is established that spiral and target patterns can arise in a liquid crystal formed layer by layer through the Burton–Cabrera–Frank dynamics, and furthermore that this layer growth mechanism is an instance of an important class of physical systems termed excitable media.
Topological defects in liquid crystals as templates for molecular self-assembly.
TLDR
The results reveal that topological defects in LCs are a versatile class of three-dimensional, dynamic and reconfigurable templates that can direct processes of molecular self-assembly.
Nanoscale assembly processes revealed in the nacroprismatic transition zone of Pinna nobilis mollusc shells
TLDR
This investigation of the prism–nacre interface reveals nanoscale details governing the onset of nacre formation using high-resolution scanning transmission electron microscopy and gives new insights into nacre Formation and particle-accretion mechanisms that may be common to many calcareous biominerals.
Nacre biomineralisation: A review on the mechanisms of crystal nucleation.
  • F. Nudelman
  • Biology, Medicine
    Seminars in cell & developmental biology
  • 2015
TLDR
Two existing models on the nucleation of aragonite crystals during nacre formation are discussed and it is proposed that they work in concert to control crystal nucleation in nacre.
Structure and mechanics of interfaces in biological materials
Hard biological materials — for example, seashells, bone or wood — fulfil critical structural functions and display unique and attractive combinations of stiffness, strength and toughness, owing to
...
1
2
3
4
...