Mobilities of two spherical particles immersed in a magneto-micropolar fluid

2022 ◽  
Vol 34 (1) ◽  
pp. 013104
Author(s):  
Shreen El-Sapa ◽  
M. S. Faltas
Keyword(s):  
Micropolar Fluid ◽  
Spherical Particles

scholarly journals Interaction of two spherical particles rotating in a micropolar fluid

2012 ◽  
Vol 56 (9-10) ◽  
pp. 229-239 ◽  
Author(s):  
M.S. Faltas ◽  
H.H. Sherief ◽  
E.A. Ashmawy
Keyword(s):  
Micropolar Fluid ◽  
Spherical Particles

STEM Study of Surface Plasmon Excitation in Small Spherical Particles

1990 ◽  
Vol 48 (2) ◽  
pp. 42-43
Author(s):  
Daniel UGARTE
Keyword(s):  
Energy Loss ◽  
Spherical Particles ◽  
Small Particles ◽  
Bulk Materials ◽  
Low Loss ◽  
Plasmon Excitation ◽  
Surface Modes ◽  
Surface Plasmon Excitation ◽  
Analytical Electron ◽  
Analytical Electron Microscope

Small particles exhibit chemical and physical behaviors substantially different from bulk materials. This is due to the fact that boundary conditions can induce specific constraints on the observed properties. As an example, energy loss experiments carried out in an analytical electron microscope, constitute a powerful technique to investigate the excitation of collective surface modes (plasmons), which are modified in a limited size medium. In this work a STEM VG HB501 has been used to study the low energy loss spectrum (1-40 eV) of silicon spherical particles [1], and the spatial localization of the different modes has been analyzed through digitally acquired energy filtered images. This material and its oxides have been extensively studied and are very well characterized, because of their applications in microelectronics. These particles are thus ideal objects to test the validity of theories developed up to now.Typical EELS spectra in the low loss region are shown in fig. 2 and energy filtered images for the main spectral features in fig. 3.

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