Direct Observation of Layered Structure of Coals by a Transmission Electron Microscope

2000 ◽  
Vol 14 (2) ◽  
pp. 515-516 ◽  
Author(s):  
Atul Sharma ◽  
Takashi Kyotani ◽  
Akira Tomita
Keyword(s):  
Electron Microscope ◽  
Direct Observation ◽  
Transmission Electron Microscope ◽  
Layered Structure ◽  
Transmission Electron

scholarly journals Microstructure and Characteristics in the Organic Matrix Layers of Nacre

2002 ◽  
Vol 17 (7) ◽  
pp. 1567-1570 ◽  
Author(s):  
F. Song ◽  
X. H. Zhang ◽  
Y. L. Bai
Keyword(s):  
Electron Microscope ◽  
Statistical Analysis ◽  
Direct Observation ◽  
Transmission Electron Microscope ◽  
Organic Matrix ◽  
Transmission Electron ◽  
Brick And Mortar ◽  
Distribution Laws

The direct observation of a type of microstructure in the organic matrix layers of nacre was obtained with a transmission electron microscope. The microstructure, which is referred to as mineral bridge in the biomineralization, is nanoscale and randomly distributed in the layers. Statistical analysis gives the distribution laws and characteristics of mineral bridges in the organic matrix layers. The existence of mineral bridges in nacre was confirmed, and it was shown that the microarchitecture of nacre should be described as a “brick–bridge–mortar” arrangement rather than traditional “brick and mortar” one.

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