scholarly journals Multi-scale electron microscopy of overnitrided Sm-Fe-Mn-N powder

AIP Advances ◽  
2018 ◽  
Vol 8 (5) ◽  
pp. 055031
Author(s):  
Akihide Hosokawa ◽  
Kenta Takagi
Author(s):  
Eric O'Quinn ◽  
Cameron Tracy ◽  
William F. Cureton ◽  
Ritesh Sachan ◽  
Joerg C. Neuefeind ◽  
...  

Er2Sn2O7 pyrochlore was irradiated with swift heavy Au ions (2.2 GeV), and the induced structural modifications were systematically examined using complementary characterization techniques including transmission electron microscopy (TEM), X-ray diffraction...


2012 ◽  
Vol 727-728 ◽  
pp. 1313-1316 ◽  
Author(s):  
Maria Virginia Gelfuso ◽  
Gabriel Moreira Lima ◽  
Daniel Thomazini

In this work CCTO have been synthesized in two different chemical precursors: calcium hydroxide and copper sulfate were used to compose CCTO-S powder while calcium carbonate and copper nitrate were used to form CCTO-N powder. Calcinations conditions were dramatically different in terms of shelf time and temperature. The CCTO phase was fully obtained for 3 hours of calcination in CCTO-N against the 24 hours to form the same phase in CCTO-S powder. Ceramic bodies densities values for CCTO-S samples were 95% of theoretical density (5.05 g/cm3) and 98% for CCTO-N. The dielectric constant, at room temperature, was obtained for ceramics processed by two routes. Microstructural analysis was conducted by Scanning Electron Microscopy (SEM) and it was performed to explain the dielectric constant differences between CCTO-S and CCTO-N ceramics.


2016 ◽  
Vol 18 (29) ◽  
pp. 19880-19887 ◽  
Author(s):  
Pan Chen ◽  
Yu Ogawa ◽  
Yoshiharu Nishiyama ◽  
Ahmed E. Ismail ◽  
Karim Mazeau

Bending deformation of cellulose nanocrystal is investigated by using multi-scale modeling and transmission electron microscopy, which highlights importance of shear contribution in the deformation behavior of cellulose.


1994 ◽  
Vol 346 ◽  
Author(s):  
Axel Greiner ◽  
Joachim Bill ◽  
Ralf Riedel

ABSTRACTMicro-nano-structured Si3N4/SiC-composites were prepared by liquid phase sintering of either amorphous, polymer derived Si-C-N powder or SiC1+x coated OC-Si3N4 powder, followed by gas pressure sintering. The obtained microstructures were investigated by scanning and transmission electron microscopy (SEM, TEM). Nanosized SiC inclusions embedded in microcrystalline Si3N4 grains were analysed by elemental mapping with electron spectroscopie imaging (ESI).


Soft Matter ◽  
2018 ◽  
Vol 14 (42) ◽  
pp. 8445-8454 ◽  
Author(s):  
Carlos G. Lopez ◽  
Oliva Saldanha ◽  
Anders Aufderhorst-Roberts ◽  
Cristina Martinez-Torres ◽  
Merel Kuijs ◽  
...  

The present work characterizes the assembly process of vimentin intermediate filaments with monovalent salts as an assembly trigger. A multi-scale approach is used, comprising time-resolved static and dynamic light scattering and quantitative scanning transmission electron microscopy.


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