scholarly journals Characterization of helium bubble size and faceting by electron holography

2006 ◽  
Vol 100 (2) ◽  
pp. 023519 ◽  
Author(s):  
E. Snoeck ◽  
J. Majimel ◽  
M. O. Ruault ◽  
M. J. Hÿtch
Keyword(s):  
Bubble Size ◽  
Electron Holography ◽  
Helium Bubble

Characterization of JEOL 3000f TEM Equipped for Electron Holography

2000 ◽  
Vol 6 (S2) ◽  
pp. 228-229
Author(s):  
M. A. Schofield ◽  
Y. Zhu
Keyword(s):  
Electron Microscope ◽  
Transmission Electron Microscope ◽  
Design Of Experiment ◽  
Electron Holography ◽  
Fringe Spacing ◽  
Interference Fringes ◽  
Transmission Electron ◽  
Careful Design

Quantitative off-axis electron holography in a transmission electron microscope (TEM) requires careful design of experiment specific to instrumental characteristics. For example, the spatial resolution desired for a particular holography experiment imposes requirements on the spacing of the interference fringes to be recorded. This fringe spacing depends upon the geometric configuration of the TEM/electron biprism system, which is experimentally fixed, but also upon the voltage applied to the biprism wire of the holography unit, which is experimentally adjustable. Hence, knowledge of the holographic interference fringe spacing as a function of applied voltage to the electron biprism is essential to the design of a specific holography experiment. Furthermore, additional instrumental parameters, such as the coherence and virtual size of the electron source, for example, affect the quality of recorded holograms through their effect on the contrast of the holographic fringes.

Helium Bubbles Effect on the Mechanical Properties of CLAM Alloys by Milte-Scale Simulations

2014 ◽  
Vol 577 ◽  
pp. 81-85
Author(s):  
Jing Wei Zhang ◽  
Jun Cai ◽  
Shuang Jiang ◽  
Xin Guo ◽  
Qiao Zhi Sun ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Yield Strength ◽  
Bubble Size ◽  
Simulation Method ◽  
Experimental Results ◽  
Helium Bubble ◽  
Yield Strain ◽  
Helium Bubbles

The effect of the different sizes and densities of He bubble on the mechanical properties of CLAM alloy was studied by milt-scale simulation method. It is found that with the increasing of helium bubble size and density, the yield strength and yield strain of CLAM alloys reduced, and the yield strength and yield elongation are predicted to be consistent with the experimental results.

CHARACTERIZATION OF THE DOWNFLOW SECTION OF AN AIRLIFT COLUMN USING BUBBLE SIZE DISTRIBUTION MEASUREMENTS

1986 ◽  
Vol 44 (1-6) ◽  
pp. 1-20 ◽  
Author(s):  
SNEHAL A. PATEL ◽  
L.A. GLASGOW ◽  
L.E. ERICKSON ◽  
C.H. LEE
Keyword(s):  
Size Distribution ◽  
Bubble Size ◽  
Bubble Size Distribution

Nanoscale characterization of Pd/TiO2 catalysts and Ag/TiO2 catalysts by electron holography

2005 ◽  
Vol 900 ◽  
Author(s):  
Satoshi Ichikawa ◽  
Tomoki Akita ◽  
Kazuyuki Okazaki ◽  
Koji Tanaka ◽  
Masanori Kohyama
Keyword(s):  
Catalytic Properties ◽  
Nano Particles ◽  
Electron Holography ◽  
Noble Metal Catalysts ◽  
Ag Particles ◽  
Nanoscale Characterization ◽  
The Mean ◽  
Ag Particle ◽  
Experimental Values

ABSTRACTCatalytic properties of noble metal catalysts are often caused by their nanostructures and the interaction between nano particles and oxides supports. We examine the mean inner potential of Pd particles in Pd/TiO2 catalyst and Ag particles in Ag/TiO2 catalysts using electron holography and HRTEM. And we compare the results of the Pd/TiO2 and Ag/TiO2 systems with our previous results of the Au/TiO2 and Pt/TiO2 systems. In the case of the Pd/TiO2 catalysts, when the size of Pd particle is smaller than 5nm, the mean inner potential of Pd changes to be higher than the calculated value of the mean inner potential which is thought to be higher than the experimental values of bulk Pd by 3-5V. The mean inner potential of Pd becomes to increase gradually as the size of the Pd particle decreases. The rate of the increment in the mean inner potential of Pd is lower than that of Au/TiO2 catalysts and Pt/TiO2 catalysts. On the other hand, in the case of Ag/TiO2 catalysts, the mean inner potential of Ag does not increase though the size of the Ag particle decreases to under 2nm.

scholarly journals Characterization of Semiconductor Materials Using Electron Holography

2017 ◽  
Vol 23 (S1) ◽  
pp. 1404-1405
Author(s):  
Lin Zhou ◽  
Zhaofeng Gan ◽  
Myung-Geun Han ◽  
David J. Smith ◽  
Martha R. McCartney
Keyword(s):  
Semiconductor Materials ◽  
Electron Holography

Fabrication and electron holography characterization of FePt alloy nanorods

2005 ◽  
Vol 87 (22) ◽  
pp. 223109 ◽  
Author(s):  
R. C. Che ◽  
M. Takeguchi ◽  
M. Shimojo ◽  
W. Zhang ◽  
K. Furuya
Keyword(s):  
Electron Holography ◽  
Fept Alloy

Electron Holography, a Versatile Tool for Characterization of Materials: Fluoroapatite-Gelatine-Composites, SiC and SiO2

2005 ◽  
Vol 631 (6-7) ◽  
pp. 983-992 ◽  
Author(s):  
Paul Simon ◽  
Hannes Lichte ◽  
Damian M�nter ◽  
Wladimir Reschetilowski ◽  
Anibal Valera ◽  
...  
Keyword(s):  
Electron Holography ◽  
Versatile Tool ◽  
Characterization Of Materials
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