FEM study of palladium and molybdenum clusters on an alumina covered field emitter

1993 ◽  
Vol 43 (9-10) ◽  
pp. 1009-1013
Author(s):  
J. Šotola ◽  
Z. Knor
Keyword(s):  
Field Emitter ◽  
Molybdenum Clusters

Design of a Field-Emission Gun for the Phillips CM20/STEM microscope

1990 ◽  
Vol 48 (2) ◽  
pp. 100-101
Author(s):  
P.M. Mul ◽  
B.J.M. Bormans ◽  
L. Schaap
Keyword(s):  
High Resolution ◽  
Field Emission ◽  
Analytical Electron Microscopy ◽  
Emission Region ◽  
Attractive Alternative ◽  
Electron Holography ◽  
Field Emitter ◽  
Field Emitters ◽  
Resolution Electron ◽  
High Resolution Tem

The first Field Emission Guns (FEG) on TEM/STEM instruments were introduced by Philips in 1977. In the past decade these EM400-series microscopes have been very successful, especially in analytical electron microscopy, where the high currents in small probes are particularly suitable. In High Resolution Electron Holography, the high coherence of the FEG has made it possible to approach atomic resolution.Most of these TEM/STEM systems are based on a cold field emitter (CFE). There are, however, a number of disadvantages to CFE’s, because of their very small emission region: the maximum current is limited (a strong disadvantage for high-resolution TEM imaging) and the emission is unstable, requiring special measures to reduce the strong FEG-induced noise. Thermal field emitters (TFE), i.e. a zirconiated field emitter source operating in the thermal or Schottky mode, have been shown to be a viable and attractive alternative to CFE’s. TFE’s have larger emission regions, providing much higher maximum currents, better stability, and reduced sensitivity to vacuum conditions as well as mechanical and electrical interferences.

A STUDY OF THE DECOMPOSITION REACTION OF METHANOL OVER Ru FIELD EMITTER SURFACES

1986 ◽  
Vol 47 (C7) ◽  
pp. C7-435-C7-440
Author(s):  
G.-K. CHUAH ◽  
N. KRUSE ◽  
G. ABEND ◽  
J. H. BLOCK
Keyword(s):  
Decomposition Reaction ◽  
Field Emitter

STUDY OF LANTHANUM ON TUNGSTEN FIELD EMITTER

1986 ◽  
Vol 47 (C7) ◽  
pp. C7-101-C7-103 ◽  
Author(s):  
G. KOZLOWSKI ◽  
W. SWIECH ◽  
S. SURMA
Keyword(s):  
Field Emitter

Arrays Of Gated Field-emitter Cones Having 0.32-μm Tip-to-tip Spacings

2005 ◽  
Author(s):  
C.O. Bozler ◽  
C.T. Harris ◽  
S. Rabe ◽  
D.D. Rathman ◽  
W.D. Goodhue ◽  
...  
Keyword(s):  
Field Emitter
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