Z
Zareh Topalian
Researcher at Uppsala University
Publications - 21
Citations - 557
Zareh Topalian is an academic researcher from Uppsala University. The author has contributed to research in topics: Sputter deposition & Fourier transform infrared spectroscopy. The author has an hindex of 11, co-authored 21 publications receiving 496 citations.
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Journal ArticleDOI
TiO2-based gas sensor: a possible application to SO2.
Jawad Nisar,Jawad Nisar,Zareh Topalian,Abir De Sarkar,Abir De Sarkar,Lars Österlund,Rajeev Ahuja,Rajeev Ahuja +7 more
TL;DR: Intrinsic oxygen-vacancy defects, which are formed on TiO2(001) and TiO 2(101) surfaces by ultraviolet (UV) light irradiation and at elevated temperatures, are found to be most effective in anchoring the SO2 gas molecules to theTiO2 surfaces.
Journal ArticleDOI
Gas sensing response of NiO nanoparticle films made by reactive gas deposition
C Luyo,C Luyo,Radu Ionescu,L. F. Reyes,L. F. Reyes,Zareh Topalian,Walter Estrada,Eduard Llobet,Claes-Göran Granqvist,Peter Heszler +9 more
TL;DR: In this article, NiO particles were prepared by advanced reactive gas evaporation and were investigated for gas sensing applications, specifically for detecting reducing (H2S) and oxidizing (NO2) species.
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Adsorption and photo-oxidation of acetaldehyde on TiO2 and sulfate-modified TiO2: Studies by in situ FTIR spectroscopy and micro-kinetic modeling
TL;DR: In this article, in situ Fourier transform infrared spectroscopy was used to study surface reactions as a function of time and number of experimental cycles and micro-kinetic modeling showed that crotonaldehyde formation occurs spontaneously on TiO2 but is impeded on SO4TiO2, where instead acetaldehyde desorption is significant.
Journal ArticleDOI
Electrochromic foil-based devices : Optical transmittance and modulation range, effect of ultraviolet irradiation, and quality assessment by 1/f current noise
C. G. Granqvist,Sara Green,Emma Jonson,Roser Marsal,Gunnar A. Niklasson,Arne Roos,Zareh Topalian,Andris Azens,Peter Georén,Greger Gustavsson,Richard Karmhag,Janusz Smulko,Laszlo B. Kish +12 more
TL;DR: In this paper, double-sided antireflection coatings based on dip coating can enhance the transmittance significantly, tandem foils can yield a ratio between bleached-state and colored-state transmittances exceeding fifty, and solar irradiance onto the EC device can enhance its charge insertion dynamics and thereby its optical modulation.
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Spectroscopic Study of the Photofixation of SO2 on Anatase TiO2 Thin Films and Their Oleophobic Properties
TL;DR: It is shown that a new method to functionalize wide band gap oxide surfaces by means of photoinduced reactions in reactive gases at elevated substrate temperatures is suggested, which yields surfaces with excellent oleophobic properties, as probed by adhesion of stearic acid.