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1

Investigation of oxygen sensor based on ruthenium compounds

Krupanek B., Bogacz R.

Prace Naukowe Politechniki Śląskiej. Elektryka

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2016

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z. 3-4

103--117

EN

Ruthenium is a chemical compound which is characterized by the luminescence phenomenon in the presence of oxygen and at a suitable excitation light having a wavelength corresponding to blue. This paper presents the construction of a planar oxygen sensor based on ruthenium compounds and preliminary oxygen concentration measurements using a constructed sensor. The work included determination of the composition of mixture reacting to changes in oxygen concentration and construction of the planar sensor. The measurement part consisted of implementation of the appropriate measuring chamber and measurements of the concentration. The initial research shows that sensor is characterized by high sensitivity and is selective.

PL

Ruten jest pierwiastkiem chemicznym, który cechuje się występowaniem zjawiska luminescencji w obecności tlenu i przy odpowiednim pobudzeniu światłem o długościach fal odpowiadających barwie niebieskiej. W publikacji przedstawiono budowę planarnego czujnika tlenu opartego o związki rutenu oraz wstępne pomiary stężenia tlenu z wykorzystaniem zbudowanego czujnika. Praca obejmowała ustalenie składu mieszanki reagującej na zmiany stężenia tlenu oraz wykonanie planarnego czujnika. Część pomiarowa składała się z wykonania odpowiedniej komory pomiarowej oraz przeprowadzenia pomiarów stężenia. Ze wstępnych badań wynika, że czujnik cechuje się dużą czułością i jest selektywny.

2

Optical uniform/gradient waveguide sensor structure-characterization

Karasiński P.

Opto-Electronics Review

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2011

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Vol. 19, No. 1

1-9

EN

The paper presents the characterization of a composite uniform/gradient waveguide sensor structure. The results of theoretical analysis and experimental studies have been presented. The influence of sensor structure parameters on homogenous sensitivity and on surface sensitivity has been analyzed. Gradient layers for composite sensor structures were produced using the ion-exchange method, and the uniform layers, using the sol-gel method. In the experimental studies, involving the produced sensor structures, a prism coupler and a grating coupler were applied. Excellent agreement between the results of theoretical analysis and experimental studies has been achieved.

3

Sensor properties of planar waveguide structures with grating couplers

Karasiński P.

Opto-Electronics Review

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2007

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Vol. 15, No. 3

168-178

EN

The paper presents the results of theoretical analysis as well as the results of experimental research involving planar sensor structures with input grating couplers of the period Δ = 800 nm. In the theoretical part of the paper we discussed the influence of the parameters of a sensor structure on it sensitivities. The experimental part of the work presents the results of experimental research involving the influence of refractive index of the cover on the coupling characteristics of sensor structures with grating couplers. The full widths at half maximum (FWHM) were from 0.023° to 0.029°. For the investigated structures we estimated detection thresholds for the changes of refractive index of the cover and the changes of sensitive film thickness. It has been demonstrated that by the application of the elaborated structures we can detect minimal changes of the refractive index (Δnc)min = 2.1×⁻⁶ when the refractive index of the cover nc = 1.333 and (Δnc)min =1.0×⁻⁶ when nc = 1.515. For sensitive films of the thickness w<100 nm, by using the elaborated structures, we can detect mean changes of the thickness along the values lower than 10⁻³ nm.

4

Sol-gel derived optical waveguide films for planar sensors with phase modulation

Karasiński P.

Optica Applicata

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2004

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Vol. 34, nr 4

467-475

EN

The paper presents the results of investigation of the technology of optical waveguide films produced with the sol-gel technique. The silica-titania films were deposited on glass substrates by a deep coating method. The influence of with drawal speed and aging time of sol on the refractive index and film thickness has been tested.