On the Adsorption of Oxygen on Tungsten as Revealed in the Field Emission Electron Microscope

1955 ◽  
Vol 23 (7) ◽  
pp. 1323-1330 ◽  
Author(s):  
J. A. Becker ◽  
R. G. Brandes
Keyword(s):  
Electron Microscope ◽  
Field Emission ◽  
Emission Electron

Characteristics and Application of Temperature-Field Emitters

1975 ◽  
Vol 33 ◽  
pp. 144-145
Author(s):  
N. Tamura ◽  
T. Goto ◽  
Y. Harada
Keyword(s):  
Temperature Field ◽  
Electron Microscope ◽  
Field Emission ◽  
Resolving Power ◽  
High Brightness ◽  
Field Emitters ◽  
Emission Electron ◽  
Sufficient Stability ◽  
Scanning Electron ◽  
Illuminating System

On account of its high brightness, the field emission electron source has the advantage that it provides the conventional electron microscope with highly coherent illuminating system and that it directly improves the, resolving power of the scanning electron microscope. The present authors have reported some results obtained with a 100 kV field emission electron microscope.It has been proven, furthermore, that the tungsten emitter as a temperature field emission source can be utilized with a sufficient stability under a modest vacuum of 10-8 ~ 10-9 Torr. The present paper is concerned with an extension of our study on the characteristics of the temperature field emitters.

Grain Boundary Phase Analysis of Silicon Nitride by a Newly Developed 300kv Field-Emission Electron Microscope

1994 ◽  
Vol 346 ◽  
Author(s):  
Y. Bando ◽  
H. Suematsu ◽  
M. Mitomo
Keyword(s):  
Electron Microscope ◽  
Silicon Nitride ◽  
Grain Boundary ◽  
Grain Boundaries ◽  
Phase Analysis ◽  
Field Emission ◽  
Boundary Phase ◽  
Emission Electron ◽  
Triple Points

ABSTRACTThe grain boundary phase of silicon nitride containing additives Y2O3 and Nd2O3 has been studied by means of a newly developed 300kV field emission ATEM. The composition of the two-grain boundary phase of about 1 nm thick is successfully determined. It is then found that the compositions among the grain boundaries are not the same and the additives of Y2O3-Nd2O3 are poor in the two-grain boundary, while they are rich in the triple points.

Carbon nanotubes grown in a field emission electron microscope

2012 ◽  
Author(s):  
Alina Pascale ◽  
Sorin Perisanu ◽  
Arnaud Derouet ◽  
Anthony Ayari ◽  
Philipppe Poncharal ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electron Microscope ◽  
Field Emission ◽  
Emission Electron

A Field Emission Electron Microscope

1971 ◽  
Vol 29 ◽  
pp. 6-7
Author(s):  
A. Tonomura ◽  
T. Komoda
Keyword(s):  
Electron Microscope ◽  
Field Emission ◽  
High Vacuum ◽  
High Resolution Electron Microscopy ◽  
Ultra High Vacuum ◽  
Electron Optics ◽  
Ion Pumps ◽  
High Brightness ◽  
Emission Electron ◽  
Resolution Electron

We have developed a field emission electron microscope. Although field emission gun requires ultra high vacuum and skillful technique, it brings about the favorable characteristics of high brightness and small energy spread. This characteristics will enable a significant progress in coherent electron optics and high resolution electron microscopy, especially in electron beam holography.Its column is Hitachi HU-11C Electron Microscope modified for ultra high vacuum operation, and it is evacuated with five ion pumps. Field emission gun is divided into two parts and is evacuated differentially with two ion pumps and a sublimation pump. The final pressures in these rooms are 5x10-10 Torr and 5x10-8 Torr respectively.

Study on the Effect upon Wear of Steel Ball from Injection Pressure in Reinforced Grinding Processing

2014 ◽  
Vol 915-916 ◽  
pp. 189-192
Author(s):  
Jin Rui Xiao ◽  
Xiao Chu Liu ◽  
Bi Hong Xie ◽  
Jian Wen Zhang ◽  
Jun Huang ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Surface Morphology ◽  
Field Emission ◽  
Experimental Research ◽  
Injection Pressure ◽  
Steel Ball ◽  
Emission Electron

An experiment is used to research the influence of injection stress towards the wear of steel ball in reinforced grinding processing under the setting condition. The field-emission electron microscope is used to obverse the samples surface morphology and the phonology equipment of surface morphology is used to measure the surface morphology of samples. The surface of the steel ball wear degree is analyzed by the surface morphology indirectly. Experimental research shows that in the condition of setting experiment, the injection pressure of reinforced grinding should not lager than 0.6MPa. If not, the obvious wear will appear in the surface of steel ball and the disadvantageous influence will happen, such as scratching the surface of workpiece under processing.

scholarly journals Eleven Thousand Interference Fringes by 1-MV Field Emission Electron Microscope

2002 ◽  
Vol 8 (S02) ◽  
pp. 524-525
Author(s):  
T. Akashi ◽  
K. Harada ◽  
T. Furutsu ◽  
N. Moriya ◽  
T. Matsuda ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Field Emission ◽  
Interference Fringes ◽  
Emission Electron
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