Premium
Imaging of three‐dimensional objects in emission electron microscopy
Author(s) -
Nepijko S. A.,
Sedov N. N.,
Schmidt O.,
Schönhense G.,
Bao X.,
Huang W.
Publication year - 2001
Publication title -
journal of microscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0022-2720
DOI - 10.1046/j.1365-2818.2001.00846.x
Subject(s) - electron microscope , substrate (aquarium) , electron , particle (ecology) , microscopy , materials science , scanning electron microscope , work (physics) , work function , function (biology) , particle size , optics , molecular physics , chemistry , physics , nanotechnology , quantum mechanics , oceanography , layer (electronics) , geology , evolutionary biology , biology
Under investigation by emission electron microscopy, the shape and size of three‐dimensional objects are distorted because of the appearance of a characteristic potential relief and a possible contact potential difference between the particles and the substrate. An estimation of these effects for spherical particles is made. It is shown that the apparent size of particles observed in an emission electron microscope (EEM) could be increased as well as decreased depending on the relation between the work functions of the particle and the substrate. The corresponding formulae are given and several possibilities are shown which permit us to determine from the EEM image the real size of particles and their work function relative to the substrate.