Alexander Stoimenov

Optical and Structural Investigations of WOx Thin Films Deposited by Electron Beam Evaporation Process
Katia Vutova, Vania Vassileva, Alexander Stoimenov, Elena Koleva, Tatyana Ivanova, Georgi Bodurov, Kostadinka Gesheva, Georgi Mladenov

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Thin films of tungsten oxide are obtained at different technological parameters using electron beam evaporation process. Their optical and structure properties are investigated and the relation with process parameters is discussed. ...  read more

Electron Beam Melting and Recycling of Nickel
Vania Vassileva, Katia Vutova, Veliko Donchev, Alexander Stoimenov, Dinesh Amalnerkar, Nagegownivari Munirathnam

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Experimental and theoretical investigations of the process parameters at electron beam melting and refining (EBMR) of nickel samples with the purpose of improving the composition of the performed ingots are presented and discussed. ...  read more