Paper Title:
Effect of Electron Microscope Magnification on the Determination of Particle Size and Shape by Image Analysis
  Abstract

To investigate the effect of magnification (M) on determination of particle size and shape by transmission electron microscopy (TEM) and image analysis. The calibration curve and its simulative equation of TEM magnification are obtained by measurement of a grating replica standard specimen at different magnifications. Based on the analysis of TEM images at a series of magnifications for a 350nm-sphere standard sample, It has been found that the two errors of its size measurement, caused by one pixel change of the pixel number per particle diameter (Np) and by one gray value change during thresholding, is smaller, and the shape of ‘circle’ particles are close to the standard one, while Np is larger than 35. It can be seen that the suitable TEM magnification is in inverse proportion to particle size and it can be calculated by given equation.

  Info
Periodical
Solid State Phenomena (Volumes 121-123)
Edited by
Chunli BAI, Sishen XIE, Xing ZHU
Pages
893-896
DOI
10.4028/www.scientific.net/SSP.121-123.893
Citation
Z. M. Li, "Effect of Electron Microscope Magnification on the Determination of Particle Size and Shape by Image Analysis", Solid State Phenomena, Vols. 121-123, pp. 893-896, 2007
Online since
March 2007
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Price
$32.00
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