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Národní úložiště šedé literatury Nalezeno 2 záznamů.  Hledání trvalo 0.01 vteřin. 
Growth of 3D Structures Induced by Electron Beam on Ceramic Substrates
 Bukvišová, Kristýna ; Čechal, Jan (oponent) ; Salamon, David (vedoucí práce)
Irradiation of a sample surface by the electron beam is known to cause structural changes. One type of these changes is vertical growth of 3D structures on surface of ceramic materials. In the thesis, the conditions necessary for such processes are analysed. A calculation of heating effect of the electron beam is conducted, since a temperature rise can trigger several surface changes. Impact of various e-beam parameters on the growth of 3D structures is investigated. Changes of volume and dimensions of the structures related to the beam parameters are studied using the AFM. The estimated temperature increase is in range of units or maximally tens of K. Significant volumetric growth rate is observed at low voltages and currents. Height of the grown structures can reach 100 nm per minute and depends inversely on beam current.
Úplný záznam
Growth of 3D Structures Induced by Electron Beam on Ceramic Substrates
 Bukvišová, Kristýna ; Čechal, Jan (oponent) ; Salamon, David (vedoucí práce)
Irradiation of a sample surface by the electron beam is known to cause structural changes. One type of these changes is vertical growth of 3D structures on surface of ceramic materials. In the thesis, the conditions necessary for such processes are analysed. A calculation of heating effect of the electron beam is conducted, since a temperature rise can trigger several surface changes. Impact of various e-beam parameters on the growth of 3D structures is investigated. Changes of volume and dimensions of the structures related to the beam parameters are studied using the AFM. The estimated temperature increase is in range of units or maximally tens of K. Significant volumetric growth rate is observed at low voltages and currents. Height of the grown structures can reach 100 nm per minute and depends inversely on beam current.
Úplný záznam

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