bicontinuous phases
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2021 ◽  
Author(s):  
Tobias M. Hain ◽  
Michał K. Bykowski ◽  
Matthias Saba ◽  
Myfanwy E. Evans ◽  
Gerd E. Schröder-Turk ◽  
...  

AbstractBicontinuous membranes in cell organelles epitomise nature’s ability to create complex functional nanostructures. Like their synthetic counterparts, these membranes are characterised by continuous membrane sheets draped onto topologically complex saddle-shaped surfaces with a periodic network-like structure. In cell organelles, their structure sizes around 50–500 nm and fluid nature make Transmission Electron Microscopy (TEM) the analysis method of choice to decipher nanostructural features. Here we present a tool to identify bicontinuous structures from TEM sections by comparison to mathematical “nodal surface” models, including the hexagonal lonsdaleite geometry. Our approach, following pioneering work by Deng and Mieczkowski (1998), creates synthetic TEM images of known bicontinuous geometries for interactive structure identification. We apply the method to the inner membrane network in plant cell chloroplast precursors and achieve a robust identification of the bicontinuous diamond surface as the dominant geometry in several plant species. This represents an important step in understanding their as yet elusive structure-function relationship.





2019 ◽  
Vol 10 (15) ◽  
pp. 4200-4208 ◽  
Author(s):  
Pengcheng Yang ◽  
Yin Ning ◽  
Thomas J. Neal ◽  
Elizabeth R. Jones ◽  
Bryony R. Parker ◽  
...  

Scalable preparation of micrometer-sized diblock copolymer particles exhibiting complex internal structure is achieved by RAFT-mediated polymerization-induced self-assembly (PISA).



2018 ◽  
Vol 67 (5) ◽  
pp. 531-537 ◽  
Author(s):  
Yutaka Takahashi ◽  
Hiroka Shirahata ◽  
Taishi Nishimura ◽  
Masaki Murai ◽  
Kazuaki Wakita ◽  
...  


2016 ◽  
Vol 49 (14) ◽  
pp. 5232-5243 ◽  
Author(s):  
Poornima Padmanabhan ◽  
Francisco Martinez-Veracoechea ◽  
Fernando A. Escobedo






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