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  1. 23 Molecular and Quantum Acoustics
  2. 12 Bulletin of the Polish Academy of Sciences. Technical Sciences
  3. 8 Optica Applicata
  4. 7 Elektronika : konstrukcje, technologie, zastosowania
  5. 5 Opto-Electronics Review
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  1. 2 2016
  2. 4 2015
  3. 5 2014
  4. 4 2013
  5. 8 2012
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  1. 82 Pustelny T.
  2. 25 Opilski Z.
  3. 21 Maciak E.
  4. 17 Struk P.
  5. 12 Gawlikowski M.
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1
Content available Analysis of actual accuracy in cardiac output measurements by means of thermodilution
100%
Gawlikowski M. , Pustelny T.
Bulletin of the Polish Academy of Sciences. Technical Sciences
|
2012
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tom Vol. 60, nr 3
581-587
EN
The essential examination in hemodynamic monitoring of the patient is the cardiac output (CO) measurement. Nowadays, in clinical practice the most popular method is indicator dilution, particularly thermodilution. It is realized by applying the Swan-Ganz catheter and observing changes of the indicator concentration. This method is sensitive to many factors and the obtained results should be treated cautiously. The paper presents theoretical and experimental studies of metrological phenomena in CO measurements by means of thermodilution, paying special attention to medical aspects of the measurements. It has been pointed out that the actual unreliability of the mentioned method reaches values from 20% to 45%, which is in opposition to the technical data of patient's monitors (typical accuracy about 5%).
2
Optymalizacja planarnych sprzęgaczy siatkowych z wykorzystaniem metody FDTD
100%
Struk P. , Pustelny T.
Elektronika : konstrukcje, technologie, zastosowania
|
2010
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tom Vol. 51, nr 6
69-72
PL
W artykule przedstawiono rezultaty analiz numerycznych struktur optyki zintegrowanej w postaci planarnych sprzęgaczy siatkowych. Sprzęgacze siatkowe o różnych okresach siatki Λ analizowano jako periodyczne zaburzenia współczynnika załamania wykonane w warstwie falowodowej. Analizy numeryczne przeprowadzono dla warstw falowodowych jednomodowych o dużym współczynniku załamania n=2. Badania numeryczne miały na celu zbadanie wpływu głębokości periodów sprzęgacza siatkowego ds na efektywność wprowadzania i wyprowadzania mocy optycznej ze struktury falowodowej. Badania numeryczne przeprowadzono za pomocą metody różnic skończonych w dziedzinie czasu FDTD (Finite Difference Time Domain).
EN
This paper presents numerical analysis of integrated optics devics specially planar grating couplers. Grating couplers of different grat periods Λ were analyzed as periodic light refractive index disturbarance in waveguide layer. Numerical analyses were conducted for waveguide layers of light refractive index n=2, both single mode. Main goal of research was to examine influence of grating coupler periods depth on effectiveness of coupling optical power in and out of the waveguide structure. For numerical analysis Finite Difference Time Domain (FDTD) metod was used.
3
Content available remote Optymalizacja sprzęgaczy siatkowych w układach optyki zintegrowanej
100%
Struk P. , Pustelny T.
Prace Naukowe Politechniki Śląskiej. Elektryka
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2009
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tom z. 4
95-101
PL
W artykule przedstawiono badania numeryczne struktury fotonicznej. W ramach badań numerycznych analizowano strukturę falowodu planarnego wraz z układem wejścia wyjścia w postaci planarnego sprzęgacza siatkowego o okresie A. Założono, że w strukturze jako warstwa falowodowa zostanie wykorzystany materiał 0 dużym współczynniku załamania nw=2. Głównym celem przeprowadzonych analiz numerycznych sprzęgaczy siatkowych było optymalizacja efektywności wprowadzania 1 wyprowadzania mocy optycznej do i ze struktury. Optymalizacja sprzęgacza siatkowego została wykonana za pomocą metody różnic skończonych w dziedzinie czasu (FDTD - Finite Difference Time Domain).
EN
The paper presents numerical analysis of integrated optics devices, especially an I/O system, based on planar grating couplers and planar waveguide. It was assumed that the waveguide layer was made of material possessing the very high light refractive index nw=2. The grating couplers of grate periods A were analysed as periodic light refractive index disturbance in the waveguide layer. The main goal of research was to verify the influence of grating coupler period depth on effectiveness of the coupling optical power in and out of the waveguide structure. The numerical investigations were carried out with use of the FDTD method (Finite Difference Time Domain method).
4
Content available The influence of limited dynamic response of the indicator detector in a Swan-Ganz catheter on the overestimation of cardiac output measurement by means of thermodilution
100%
Gawlikowski M. , Pustelny T.
Metrology and Measurement Systems
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2012
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tom Vol. 19, nr 4
751-758
EN
Nowadays the "gold clinical standard" of hemodynamics diagnostic and cardiac output measurements is pulmonary artery catheterization by means of the Swan-Ganz catheter and thermodilution. The method itself is sensitive to numerous disturbances which cause inaccurate results. One of the well-known disadvantages of thermodilution is the overestimation of results at low values of cardiac output. This effect may concern the limited slew rate of the thermoelement mounted at the tip of the catheter. In this paper the relationship between the dynamic response of the thermoelement and the uncertainty of cardiac output measurements by means of thermodilution has been investigated theoretically and experimentally.
5
Content available Design and numerical analyses of the planar grating coupler
100%
Struk P. , Pustelny T.
Bulletin of the Polish Academy of Sciences. Technical Sciences
|
2010
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tom Vol. 58, nr 4
509-512
EN
The paper presents the results of numerical analyses of the structures of integrated optics in the form of planar waveguides made of materials with high values of the refractive index n = 2.00 and with an input-output system in the form of Bragg grating couplers. The numerical investigations were carried out by using the FDTD method (Finite Difference Time Domain method).
6
Content available Analysis of actual accuracy in cardiac output measurements by means of thermodilution
100%
Gawlikowski M. , Pustelny T.
|
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nr 3
7
Optic Fiber Electric Field Intensity Sensor
100%
Pustelny T. , Pustelny B.
|
2000
|
tom Vol. 21
201-206
EN
In this paper the results of the experimental investigation of fiber optic electric fieId intensity sensors are presented. These sensors are based on electroluminescent effect which consists in the light emission by some substances placed in variable electric field. The luminescent effect is observed in some composite semiconductors, among other - ZnS, doped by Mn, for high its concentration, order 10 -4 -- 10 -3 g/g. The final aim of this investigation will be the elaborafion ofan electric intensity sensor, which together fiber optic temperaturę sensors and intensive of magnetic field sensors make possible, in the future, to monitor the state ofwork of electromagnetic power arrangements, first ofall - high voltage power transformers.
8
Monitoring Methods of Nitrogen Dioxide
100%
Ignac-Nowicka J. , Pustelny T.
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2001
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tom Vol. 22
171-182
EN
In the article nitrogen dioxide detection methods are presented. Particularly, the ideas fo methods based on surface acousic wave propagation in layered structures and photoacoustic method as well as the plasmon resonance method are discussed. Advantages described methods and their measurement possibilities are analysed. Methods recomended by the Polish Standard are described, too. Devices just in nitrogen dioxide minitoring, their construction and principle of an operation are discussed. Examples of commercial solution of this kind of gas detectors are shown.
9
Numerical System of Acoustic Field Visualisation
100%
Szpakowski A. , Pustelny T.
|
2002
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tom Vol. 23
413-418
EN
This article presents the physical base of the numerical system for analyse and modelling acoustic fields by an acoustic head of arbitary construction generated. The system allows to analyse the sending-receiving multielement ultrasound heads. Nowadays the system is being axpanded to analyse the propagation of pressureweve through the acoustic media. The expansion of the system will allow to use it for investigation of biological tissues and for mechanical devices monitoring.
10
Content available remote Investigation of electroluminophores for their practical application in optical fibre sensor technology
100%
Pustelny T. , Pustelny B.
Opto-Electronics Review
|
2002
|
tom Vol. 10, No. 3
193-198
EN
In this paper, the results of the experimental investigation of electroluminescent phenomena are presented. The electroluminescent effect is observed in some composite semiconductors, among others - ZnS, doped by Mn and Cu. The concentrations of impurities in good guality electrophosphores are higher than in photoluminophores and they are within the range of 10⁻⁴ - 10⁻³ g/g. The worked out electroluminophors were tested in the electric field of sinusoidally changeable intensity. The influence of electric field both on spectral characteristics and electroluminescence intensity was examined. The final aim of the tests is elaboration of electric intensity sensors which will be applied in monitoring of operation of electromagnetic power arrangements in the future.
11
New System of Analysis Ultrasound Transducers and Spatial Distributions of Acoustical Fields
100%
Szpakowski A. , Pustelny T.
|
2000
|
tom Vol. 21
289-300
EN
The main aim ofthe wvork was the elaboration of the new method of analyzing as well as designing the acoustical transducers and multitransducers ultrasound heads. The result of the theoretical analyze in the form of complete numerical system were elaborated. The system makes possible the modeling ofcomplex acoustic heads, that consist ofarbitrary number of simply transducers and enables of versatile frequency investigations of these heads. The system enables also the calculation of the spatial distributions of acoustic field, generatedby the ultrasound heads.
12
Testing and investigation of luminescence fiber optic temperature sensors
100%
Pustelny T. , Kamizela G.
|
|
tom Vol. 19
221-230
EN
Fiber optic sensors may chance to be the interesting and valuable completion of electric and electronic sensors for industrial and scientific application. The main characteristic domain of fiber optic sensors are the non sensitivity to strong electromagnetic disturbance radiation, the complete galvanic insulation as well as the full safety their using in places endangered of explosions and a risk of fire. There are group of luminescent materials, which after their excitation, emit the own light and the properties of emitted light depend on temperature. On temperature depends spectrum of light, its intensity and dynamic parameters of light decaying after excitation. These effects have found application in sensor techniques. In Institute of Physics of Silesian Technical University were elaborated fiber optic temperature sensors based on dependence of decaying time on temperature. In this paper testing and investigation of temperature luminescent fiber optic sensor were presented These sensors are planed to applied in high power transformers and power machines for their work state control.
13
Content available remote Numerical analyses of optical couplers for planar waveguides
100%
Pustelny T. , Struk P.
Opto-Electronics Review
|
2012
|
tom Vol. 20, No. 3
201-206
EN
The paper presents the results of numerical analyses of optical structures realized in the form of planar waveguides made of materials with high values of the refractive index n ≈ 1.85. The analysed structures consist of a waveguide and input-output systems. Input-output couplers are realized in the form of prisms as well as Bragg's grating couplers. Numerical investigations were carried out by applying the finite difference time domain (FDTD) method.
14
Content available remote Differential interferometry in planar waveguide structures with ferronematic layer
100%
Tyszkiewicz C. , Pustelny T.
Optica Applicata
|
2004
|
tom Vol. 34, nr 4
507-514
EN
The paper presents a differential interferometry phenonenon in a planar optical structure, which uses a ferronematic layer of a liquid crystal. This layer changes propagation conditions for TM modes in external magnetic field. Due to the magnetic field action on a ferronematic layer whichcovers the planar waveguide coated with an additional orientative layer, the ellipsoid of the refractive index changes its orientation in a polarization plane of the TM mode. In consequence, the phase difference of the TM mode occurs under magnetic field influence. This paper provides an analysis of the influence of a thickness and a refractive index of the orientative layer on interference phenomenon in analyzed structure.
15
Acoustelectric method for investigation of electrical carrier mobility of real GaP:Te (110) surface
100%
Pustelny T. , Pustelny B.
|
2007
|
tom Vol. 28
223-227
EN
The acoustic method of investigating the carrier mobility in the near-surface region of a semiconductor is presented. In this method the transverse acoustoelectric voltage versus the absorbed surface acoustic wave power was measured to determine nondestructively the carrier mobilites. In the layered structure: piezoelectric - semiconductor, the majority and minority carrier mobilities can be determined basing on the field effect. Single GaP:Te(110) crystals have been investigated after various kinds pf surface treatment. The carrier mobility values range from 75 to 120 [cm2/ V s]. The results determined by means of the TAV method are in satisfactory agreement with the results obtained by Hall measurements.
16
Content available Numerical model for analysis of spatial characteristics of ultrasound heads
80%
Szpakowski A. , Pustelny T. , Ochocki M.
Hydroacoustics
|
2003
|
tom Vol. 6
177--182
EN
The paper presents the physical base of the numerical system for analysis and modelling acoustic fields generated by an acoustic head of arbitrary construction. The elaborated system allows to analyse the sending-receiving multielements ultrasound heads. In the paper modeling of the acoustic system as the linear one was proposed. Numerical model, its implementation and preliminary results was presented.
17
Analiza czułości planarnych, polimerowych światłowodów rewersyjnych
80%
Gut K. , Pustelny T. , Drewniak S.
Elektronika : konstrukcje, technologie, zastosowania
|
2010
|
tom Vol. 51, nr 6
27-30
PL
W niniejszej pracy zaprezentowano analizę teoretyczną światłowodów o odwróconej symetrii ze zwróceniem uwagi na możliwe zastosowanie ich jako elementy składowe czujników. Zasada odwróconej symetrii jest oparta na wytworzeniu współczynnika załamania podłoża falowodowego mniejszego niż współczynnik załamania ośrodka pokrywającego warstwę falowodową (nwody = 1,33) [5]. Taka kolejność warstw jest przeciwstawna konwencjonalnej geometrii światłowodu, gdzie podłożem jest zazwyczaj szkło ze współczynnikiem załamania ok. 1,5. Zaletą przedstawionej konfiguracji rewersyjnej jest głębsza penetracja pola zanikającego do medium pokrycia, co teoretycznie zwiększa czułość na zmiany współczynnika załamania analitu w porównaniu do tradycyjnie zaprojektowanego światłowodu [5]. W pracy prezentowane będą obliczenia czułości i badania głębokości wnikania pola zanikającego konwencjonalnego światłowodu oraz światłowodu z symetrią rewersyjną, gdzie jako współczynnik załamania warstwy światłowodowej przyjęto wartość 1,59 (polimer SU8). Polimerowe światłowody są dobrymi kandydatami do tanich i produkowanych na masową skalę modułów czujników o odwróconej symetrii.
EN
In this paper an extensive theoretical analysis of reverse symmetry waveguide was presented. Possible application this waveguides as a component of sensors was considered. Principle is based on [5] formation of the refractive index of the substaring layer which is smaller than refractive index of the (n water= 1.33). Such order of layers is opposite to conventional geometry of waveguide, where the glass with the refractive indes about 1.5 is the substrate. Deeper penetration of evanescent field to the cover medium is advantage of presented reversed configuration [5], because it increases sensitivity to the change of refractive index of the analyte comparing with traditional design waveguide. In this paper calculation of the sensitivity and the studies of depth of evanescent field conventional and reverse symmetry wayeguide will be shown. As an refractive index value 1.59 was taken (polymer SU8). Polymer waveguides are good candidates for cheap and produced on a wide scale, modules of the sensor with reverse symmetry.
18
Content available remote Modelowanie dużego układu krążenia człowieka w postaci elektrycznego układu zastępczego
80%
Struk P. , Pustelny T. , Nawrat Z.
Prace Naukowe Politechniki Śląskiej. Elektryka
|
2009
|
tom z. 4
85-93
PL
W artykule przedstawione są badania modelowe dużego układu krążenia człowieka przeprowadzone z wykorzystaniem elektrycznego układu zastępczego. Zostaną przedstawione analogie pomiędzy układem krążenia człowieka a elektrycznym układem zastępczym. Wyniki analiz uzyskane za pomocą układu elektrycznego zostaną porównane z badaniami przeprowadzonymi na fizycznym modelu układu krążenia człowieka.
EN
The paper presents numerical research of the human greater circulatory system modelled as an electric circuit. The similarities between the human greater circulation and the electric model are described. The results obtained from the electrical circuit are compared with those got from investigations of the physical model of the human circulatory system.
19
Content available remote Surface acoustic wave hydrogen gas sensor based on layered structure of palladium/metal-free phthalocyanine
80%
Jakubik W. P. , Urbańczyk M. , Maciak E. , Pustelny T.
Bulletin of the Polish Academy of Sciences. Technical Sciences
|
2008
|
tom Vol. 56, nr 2
133-138
EN
A layered sensor structure of metal-free phthalocyanine H2PC (160 nm) with a very thin film of palladium (Pd-20 nm) on the top, has been studied for hydrogen gas-sensing application at relatively low temperatures of about 30°C and about 40°C. The layered structure was obtained by vacuum deposition (first the phthalocyanine Pc and than the Pd film) onto a LiNbO3Y- cut Z-propagating substrate, making use of the Surface Acoustic Wave method, and additionally (in this same technological processes) into a glass substrate with a planar microelectrode array for simultaneous monitoring of the planar resistance of the layered structure. In such a layered structure we can detect hydrogen in a medium concentration range (from 0.5 to 3% in air) even at about 30°c. At elevated tem-perature up to about 40°C the differential frequency increases proportionally (almost linearly) to the hydrogen concentration and the response reaches its steady state very quickly. The response times are about 18 s at the lowest 0.5% hydrogen concentration to about 42 s at 4% (defined as reaching 100% of the steady state). In the case of the investigated layered structure a very good correlation has been observed between the two utilized methods - the frequency changes in the SAW method correlate quite well with the decreases of the layered structure resistance.
20
Content available remote Experimental investigation of thin metalphthalocyanine layers CuPc, PbPc, NiPc by plasmon resonance method to be applied in NO2-sensors
80%
Pustelny T. , Ignac-Nowicka J. , Opilski Z.
Optica Applicata
|
2004
|
tom Vol. 34, nr 2
249-264
EN
The surface plasmon resonance spectroscopy is an optical technique that is capable of monitoring chemical and physical processes. It is sensitive to detect small changes of dielectric properties in a metal-phthalocyanine boundary. For this reason plasmon resonance phenomena have been used to characterize a number of different types of films. This work analyses the possibility of using the surface plasmon resonance phenomena in the detection of gas. Thin films of copper, lead and nickel phthalocyanines have been examined in the plasmon system from the point of view of their application to NO2 sensors
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