Development of 200kV ultrahigh-resolution analytical electron microscope

1989 ◽  
Vol 47 ◽  
pp. 108-109
Author(s):  
T. Kaneyama ◽  
M. Naruse ◽  
Y. Ishida ◽  
M. Kersker
Keyword(s):  
Electron Microscope ◽  
Optical Constants ◽  
Materials Science ◽  
Objective Lens ◽  
The Finite Element Method ◽  
Ultrahigh Resolution ◽  
Analytical Electron ◽  
Analytical Electron Microscope ◽  
Characteristic Features ◽  
Better Than

In the field of materials science, the importance of the ultrahigh resolution analytical electron microscope (UHRAEM) is increasing. A new UHRAEM which provides a resolution of better than 0.2 nm and allows analysis of a few nm areas has been developed. [Fig. 1 shows the external view] The followings are some characteristic features of the UHRAEM.Objective lens (OL)Two types of OL polepieces (URP for ±10' specimen tilt and ARP for ±30' tilt) have been developed. The optical constants shown in the table on the next page are figures calculated by the finite element method. However, Cs was experimentally confirmed by two methods (namely, Beam Tilt method and Krivanek method) as 0.45 ∼ 0.50 mm for URP and as 0.9 ∼ 1.0 mm for ARP, respectively. Fig. 2 shows an optical diffractogram obtained from a micrograph of amorphous carbon with URP under the Scherzer defocus condition. It demonstrates a resolution of 0.19 nm and a Cs smaller than 0.5 mm.

OPTICAL CONSTANTS OF LAYER STRUCTURES FROM ELLIPSOMETRIC DATA

1983 ◽  
Vol 44 (C10) ◽  
pp. C10-31-C10-34
Author(s):  
S. Logothetidis ◽  
J. Spyridelis
Keyword(s):  
Optical Constants ◽  
Layer Structures

Determination of the optical constants of metal-halide perovskite nanocrystals

2019 ◽  
Author(s):  
Gabriel Lozano ◽  
Andrea Rubino ◽  
Mauricio E. Calvo ◽  
Hernán Míguez
Keyword(s):  
Optical Constants ◽  
Metal Halide ◽  
Perovskite Nanocrystals ◽  
Metal Halide Perovskite ◽  
Halide Perovskite

Study of Optical Constants of Al2O3 Doped Polystyrene

2011 ◽  
Vol 14 (2) ◽  
pp. 103-108 ◽  
Author(s):  
Saad Farhan Oboudi ◽  
Keyword(s):  
Optical Constants

Method for Determining the Optical Constants of Semitransparent Films

1971 ◽  
Vol 10 (2) ◽  
pp. 338 ◽  
Author(s):  
S. E. Webber ◽  
S. R. Scharber
Keyword(s):  
Optical Constants

Optical constants of PbI2 in the visible range

1980 ◽  
Vol 60 (2) ◽  
pp. K153-K157 ◽  
Author(s):  
C. de Blasi ◽  
S. Galassini ◽  
C. Manfredotti ◽  
R. Murri ◽  
R. Piccolo
Keyword(s):  
Optical Constants ◽  
Visible Range
Sign in / Sign up

Export Citation Format

Share Document