Students

									



							
							
							
							
Alumni
							

								

								

								Abedivaraki, M.
Bartková, D.
Buchholcerová, H.
Cíbiková, M.
Cimerman, R.
Damek, M.
Dreninová, V.
Dvonč, L.
Gálik, J.
Giertl, D.
Halušková, P.
Hassan, M.
Hennecke, A.
Chládeková, L.
Ivanová, P.
Janíková, K.
Jankovič, R.
Jedlovský, I.
Kintler, M.
Kováč, M.
Kovaľová, Z.
Kučerová, K.
Kukura, S.
Kunecová, D.
Lavrikova, A.
Leštinská, L.
Leštinský, M.
Maslík, J.
Maťáš, E.
Menthéour , R.
Miháliková, D.
Mišenko, P.
Molnár, M.
Ndiffo Yemeli, G.
Niklová, A.
Okruhlicová, V.
Omasta, S.
Pakosová, L.
Pásztor, S.
Pavle, M.
Pelach, M.
Polakovič, A.
Poljak, M.
Pongrác, B.
Pračko, M.
Račková, D.
Saedi , M.
Selvek, M.
Sersenová, D.
Seyfi, P.
Sič, J.
Strižencová, L.
Sučanská, A.
Štípala, P.
Tarabová, B.
Valovič, P.
Velísková, M.
Záňová, V.
Zigo, J.
Žilková, A.
								

								

								Zuzana Kovaľová
Bc. level: 2009 - 2010
Supervisor: Zdenko Machala
Title (en): 
Bio-decontamination of surfaces from bacterial spores in electric discharges
Title (sk): 
Bio-dekontaminácia bakteriálnych spór v elektrických výbojoch
Abstract (sk)
MSc. level: 2010 - 2012
Supervisor: Zdenko Machala
Title (en): 
Bio-decontamination of teeth and plastic surfaces by cold plasma of corona discharge
Title (sk): 
Bio-dekontaminácia zubov a plastových povrchov studenou plazmou korónových výbojov
Abstract (en):  hide
The bio-decontamination of Streptococci biolm on teeth
and plastic surfaces is the main interest of this work. For this
purpose, we used cold plasma of two corona discharges: positive
streamer corona and negative Trichel pulses. We show
that decontamination by these atmospheric pressure air DC
discharges is a new ecient method for biolm elimination
from teeth and plastic surfaces. We also tested positive transient
spark, though it was not suitable for expositions longer
than 2 minutes. Corona reduced bacterial population (evaluated
by log10) on contaminated teeth by 2.73 orders of
magnitude in 10 min exposure time in average.
The same discharges were also tested with the electrospraying
of water through a hollow needle - high voltage
electrode. Enhancement of plasma biocidal eects by water
spraying was investigated. Our results display that reduction
of bacterial population without water spraying on plastic
and teeth were similar - around 1 log (e.g. 90%). Water
spraying increased the bacterial reduction up to 4 logs with
both types of samples.
An analysis of tooth surfaces after plasma treatment was
made by visualisation of treatment surface with a scanning
electron microscope (SEM) and spectroscopic analysis with
Fourier transform infrared spectroscopy (FTIR) and energydispersive
X-ray analysis (EDX). We found small changes in
the morphology and the sample composition caused by exposition
to plasma for 10 min on SEM images and EDX
spectra. However, these results are not nal and require further
investigations.
Abstract (sk)
PhD. level: 2012 - 2016
Supervisor: Zdenko Machala
Consultant: Emmanuel Odic
Title (en): 
Bio-decontamination of biofilms on surfaces by cold plasma
Title (sk): 
Bio-dekontaminácia biofilmov na povrchoch pomocou studenej plazmy
Abstract (en)