Electronic transport in thin semiconductor films of finite length in magnetic field

1996 ◽  
Author(s):  
Yu. G. Gurevich ◽  
G. Gonzalez de la Cruz ◽  
V. V. Prosentsov
Keyword(s):  
Magnetic Field ◽  
Finite Length ◽  
Electronic Transport ◽  
Semiconductor Films ◽  
Thin Semiconductor

scholarly journals Influence of Magnetic Field on the Peristaltic Flow of a Viscous Fluid through a Finite-Length Cylindrical Tube

2010 ◽  
Vol 7 (3) ◽  
pp. 169-176 ◽  
Author(s):  
S. K. Pandey ◽  
Dharmendra Tripathi
Keyword(s):  
Magnetic Field ◽  
Viscous Fluid ◽  
Transverse Magnetic Field ◽  
Finite Length ◽  
Flow Rate ◽  
Hartmann Number ◽  
Volume Flow Rate ◽  
Critical Value ◽  
Transverse Magnetic ◽  
Volume Flow

The paper presents an analytical investigation of the peristaltic transport of a viscous fluid under the influence of a magnetic field through a tube of finite length in a dimensionless form. The expressions of pressure gradient, volume flow rate, average volume flow rate and local wall shear stress have been obtained. The effects of the transverse magnetic field and electrical conductivity (i.e. the Hartmann number) on the mechanical efficiency of a peristaltic pump have also been studied. The reflux phenomenon is also investigated. It is concluded, on the basis of the pressure distribution along the tubular length and pumping efficiency, that if the transverse magnetic field and the electric conductivity increase, the pumping machinery exerts more pressure for pushing the fluid forward. There is a linear relation between the averaged flow rate and the pressure applied across one wavelength that can restrain the flow due to peristalsis. It is found that there is a particular value of the averaged flow rate corresponding to a particular pressure that does not depend on the Hartmann number. Naming these values ‘critical values’, it is concluded that the pressure required for checking the flow increases with the Hartmann number above the critical value and decreases with it below the critical value. It is also inferred that magneto-hydrodynamic parameters make the fluid more prone to flow reversal. The conclusion applied to oesophageal swallowing reveals that normal water is easier to swallow than saline water. The latter is more prone to flow reversal. A significant difference between the propagation of the integral and non-integral number of waves along the tube is that pressure peaks are identical in the former and different in the latter cases.

Discrete electronic transport through a microwire in a longitudinal magnetic field

1994 ◽  
Vol 50 (24) ◽  
pp. 18341-18349 ◽  
Author(s):  
E. N. Bogachek ◽  
M. Jonson ◽  
R. I Shekhter ◽  
T. Swahn
Keyword(s):  
Magnetic Field ◽  
Electronic Transport ◽  
Longitudinal Magnetic Field

scholarly journals Electronic Transport Spectroscopy of Carbon Nanotubes in a Magnetic Field

2005 ◽  
Vol 94 (15) ◽  
Author(s):  
P. Jarillo-Herrero ◽  
J. Kong ◽  
H. S. J. van der Zant ◽  
C. Dekker ◽  
L. P. Kouwenhoven ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Carbon Nanotubes ◽  
Electronic Transport

Thin semiconductor films CuBi2O4 for photoelectrochemical solar cells

2020 ◽  
Vol 25 ◽  
pp. 1-5
Author(s):  
Darya Puzikova ◽  
Margarita Dergacheva ◽  
Gulinur Khussurova
Keyword(s):  
Solar Cells ◽  
Semiconductor Films ◽  
Thin Semiconductor ◽  
Photoelectrochemical Solar Cells
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