The New Crystalline Mixed Valent Solids TlIn4Se5X (X: Cl, Br) and TlIn4S5Cl: Structure and Nanoscopic Defects Investigated by Combined Application of X-ray and HRTEM Studies

2008 ◽  
Vol 634 (12-13) ◽  
pp. 2209-2216 ◽  
Author(s):  
V. Nickel ◽  
C. Reiner ◽  
M. Schlosser ◽  
H.-J. Deiseroth ◽  
L. Kienle ◽  
...  
Keyword(s):  
X Ray ◽  
2016 ◽  
Vol 8 (4) ◽  
pp. 82-91
Author(s):  
I.V. Shutikhina ◽  
Y.A. Tsybulskaya ◽  
S.V. Smerdin ◽  
N.V. Selyukova ◽  
O.V. Baturin ◽  
...  

Author(s):  
Richard S. Thomas ◽  
Merle M. Millard ◽  
René Scherrer

Low-temperature, oxygen plasma etching (OPE) is a useful technique in electron-microscopic (EM) morphological studies of mineral-containing organic polymers and biological structures. OPE gently and cleanly etches away the organic matrix at the surface of the specimen, leaving behind oxides and salts of exposed mineral elements. X-ray photoelectron spectroscopy (XPS) is widely used for macroscopic chemical analysis of the surfaces of polymers and inorganic specimens. The XPS signal originates from a surface depth of less than 100 Å. Combined application of the three techniques, OPE, EM and XPS to dispersible, macroscopic specimens which are microscopically homogeneous should allow correlation of fine structural features with surface and subsurface chemical composition. The present, preliminary study explores this possibility on bacterial spores and cells. Further details, and similar studies on tissue culture cells will be reported elsewhere.


2018 ◽  
Vol 115 (4) ◽  
pp. 408
Author(s):  
Juan Dong ◽  
Jeremy Epp ◽  
Robin Lipinski ◽  
Michael Sorg ◽  
Hans-Werner Zoch ◽  
...  

Monitoring the nitriding treatment by analyzing directly the components’ surface state during the nitriding treatment is particularly interesting, since it allows a process monitoring and control based on the actual nitriding result. In the present study, two measuring methods are developed and combined with the aim of a direct surface state analysis during the nitriding treatment: the in situ X-ray diffraction (XRD) method and the photothermal radiometry. In order to validate the combined application of both methods during a nitriding treatment under controlled atmosphere, an experimental setup including a miniature nitriding furnace was developed. Two alloyed steels AISI 4140 and AISI H13 are treated with varying process atmosphere and nitriding potential leading to varying phase composition in the surface layer. As a result, the photothermal radiometry is shown to be sensitive with respect to the changing surface properties due to the growing compound layers and when porous layers are generated. It has a high potential to serve as surface sensor in industrial processes.


2014 ◽  
Vol 56 (3) ◽  
pp. 224-229
Author(s):  
Roberto Triolo ◽  
Graziella Giambona ◽  
Fabrizio Lo Celso ◽  
Irene Ruffo ◽  
Nikolay Kardjilov ◽  
...  

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