Zobrazeno 1 - 10
of 27
pro vyhledávání: '"V.V. Urošević"'
Publikováno v:
High Pressure Research. 9:247-250
It is shown that the ruby fluorescence lifetime TR(2E → 4A2 transition) exhibits (at least up to 200kbar) a linear rise with pressure, the slope being 0.0312 ± 0.0005ms/kbar. The possible use of this phenomenon as an alternative method for high pr
Publikováno v:
High Pressure Research. 9:251-254
New high pressure spectroscopic investigation of SrB4O7: Sm2+ confirm the linear rise of Sm2+ 0—0 line with pressure1. Examination of excitation spectra, and lifetimes indicate a low pressure phase transition in this material (probably connected wi
Autor:
V.V. Urošević, Lj. Zekovic
Publikováno v:
Thin Solid Films. 86:347-350
It is definitively proved that the electroluminescence of thin anodic oxide films on aluminum exhibits a pronounced interference effect. This phenomenon can be used for determination of the anodizing rate and some other important characteristics of o
Publikováno v:
Chemical Physics Letters. 155:325-328
The pressure dependence of the fluorescence lifetime of ruby has been measured in the 0–118 kbar pressure range. A linear increase of emission lifetime τ is found with a slope Δτ/Δ P =0.0312 ms/kbar (for the RI line). This increase can be corre
Publikováno v:
Applications of Surface Science. :90-99
In this work we use the previously referred to interference effect [1] which takes place in electroluminescence of thin anodic oxide films, in order to determine film thickness, refraction index of anodic alumina and optical constants of aluminium. I
Publikováno v:
Thin Solid Films. 139:109-113
It is shown that previously described photoluminescence (PL) methods can be used for simultaneous determination of the refractive index n and thickness d of porous anodic oxide films formed on aluminium. The measurement of n and d is based on the det
Publikováno v:
Thin Solid Films. 157:59-68
Photoluminescence emission spectra of thin (1–5 μm thick) Al 2 O 3 films formed by d.c. anodization of pure aluminium in 0.1 M oxalic acid have been investigated under the conditions of Lummer-Gehrke-type interference (in which the emmission angle
Publikováno v:
Thin Solid Films. 105:169-176
Publikováno v:
Chemical Physics Letters. 158:172-174
Using crystal field theory and experimental data for maxima in photoexcitation spectra in anodic alumina formed by dc anodization in different electrolytes, it is shown that the bond length between Al 3+ and complex ions (SO 4 2− , PO 4 3− , CrO
Publikováno v:
Electrochimica Acta. 34:1707-1709
We use molecular orbital theory (MOT) to explain the existence of one or two excitation maxima in photoluminescence excitation spectra of Al 2 O 3 formed on Al in different aqueous electrolytes (H 2 SO 4 , H 3 PO 4 , H 2 CrO 4 , Na 2 CO 3 , H 2 C 2 O