Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "42.79.Pw" wg kryterium: Temat

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-24 z 24
    Tytuł:
    Extrinsic Optical Fiber Sensor for Medical Audiometric Applications
    Autorzy:
    Prokopczuk, K.
    Poczęsny, T.
    Sobotka, P.
    Domański, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1418093.pdf
    Data publikacji:
    2012-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.81.Pa
    42.79.Pw
    Opis:
    The paper presents optical fiber sensor designed for medical audiometric measurements. Currently, highly precise audiometric examinations require attachment of reflective element inside the ear. We propose alternative contactless optical and non-invasive method for audiometric applications. Presented sensor utilizes extrinsic intensity modulation combined with interferometric method to measure low amplitude vibrations with flat frequency response curve and no resonance effects. Experiment was performed with tympanic membrane model stimulated by external loudspeaker. Experimental results show usage possibility of presented sensor for laryngological and audiometric tests of ear membrane response, which is important for both diagnosis and implants sensitivity fitting for people with hearing deficits.
    Źródło:
    Acta Physica Polonica A; 2012, 122, 5; 957-961
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Enhancing Responsivity of Porous GaN Metal-Semiconductor-Metal Ultraviolet Photodiodes by Using Photoelectrochemical Etching
    Autorzy:
    Al-Heuseen, K.
    Hashim, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1490759.pdf
    Data publikacji:
    2012-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.67.Rb
    42.79.Pw
    Opis:
    In this paper porous and as-grown GaN metal-semiconductor-metal photodiodes with Ni contact electrodes were fabricated. Structural and optical properties were studied of the both samples. Both detectors show a sharp cut-off wavelength at 370 nm, with a maximum responsivity of 0.14 A/W and 0.065 A/W achieved at 360 nm for porous GaN and as-grown metal-semiconductor-metal photodetectors, respectively. The metal-semiconductor-metal photodiode based on porous GaN shows enhanced twice magnitude of responsivity relative to the as-grown GaN metal-semiconductor-metal photodiode. Enhancement of responsivity can be attributed to the relaxation of stress and reduction of surface pit density in the porous sample. The porous sample showed a significantly low dark current at 5 V as compared to as grown sample.
    Źródło:
    Acta Physica Polonica A; 2012, 121, 1; 71-73
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mach-Zehnder Interferometer on the Base of Gradient Index Multimode Interference Structures
    Autorzy:
    Błahut, M.
    Kasprzak, D.
    Sujewicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1795783.pdf
    Data publikacji:
    2009-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.82.Ds
    42.82.Et
    42.79.Pw
    Opis:
    The paper presents the technology and testing measurements of Mach-Zehnder interferometer made by $K^{+}-Na^{+}$ ion exchange in glass. As a splitter and coupler of measuring and reference arms we used gradient index multimode interference structures in symmetrical configuration. The investigated interferometer, working in asymmetrical configurations, registers the phase shifts resulting from the changes of refractive index of the cover of both interferometer arms.
    Źródło:
    Acta Physica Polonica A; 2009, 116, 3; 261-263
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of Interference Signals Generated by Vibroacoustic Vibrations of Transformer Cores
    Autorzy:
    Boczar, T.
    Borucki, S.
    Cichoń, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1199078.pdf
    Data publikacji:
    2014-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    79.60.Bm
    42.79.Pw
    52.80.Hc
    Opis:
    The article deals with the subject matter referring to the interference that may accompany measurements of vibroacoustic signals, generated by electric power transformers, taken by using the acoustic emission method under industrial conditions. Paper concerns measurement and analysis of internal, acoustic type disturbances, including the magnetostrictive vibrations of plate sets within the transformer core, caused by changes in the magnetic flux. Paper presents measurement results of acoustic interfering signals and results of analyses made in the frequency and time-frequency domains. Power spectral density, MUSIC pseudospectra, two- and three-dimensional short time Fourier transform spectrograms, continuous wavelet transform scalograms, discrete wavelet transform, and quantities of energy transferred are included in the paper.
    Źródło:
    Acta Physica Polonica A; 2014, 125, 6; 1355-1359
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of Optical Radiation Generated by Partial Discharges on Insulators
    Autorzy:
    Frącz, P.
    Boczar, T.
    Borucki, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1366318.pdf
    Data publikacji:
    2014-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    79.60.Bm
    42.79.Pw
    52.80.Hc
    Opis:
    Results of measurements of optical radiation emitted by partial and complete electrical discharges occurring on a bushing insulator model placed in air are presented in the article. Registration was performed using a spectrophotometer, enabling for measurement of optical radiation in the range from 270 to 1700 nm. Detailed characteristics of spectrophotometer are presented in our previous paper. The primary objective of the laboratory tests was to evaluate the impact of supply voltage changes in the range from 0 to 0.99 $U_{b}$ (breakdown voltage) on the intensity and spectral character of the optical radiation emitted by partial discharges generated on the porcelain insulation surface of the bushing insulator. In the scope of studies analyzes of the effects of voltage changes on the obtained spectral waveforms were performed, whereby voltage increase and reduction was examined separately. Additionally, measurements and analyzes carried out included impact estimation of the time period as the voltage was applied to the high-voltage electrodes on the course of optical phenomena related to the generation of partial discharges.
    Źródło:
    Acta Physica Polonica A; 2014, 125, 6; 1360-1366
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Influence of a Nanometric Layer with a High Refracting Index οn the Sensitivity οf the Difference Interferometer
    Autorzy:
    Gut, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1811550.pdf
    Data publikacji:
    2008-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.82.Et
    07.07.Df
    42.79.Pw
    Opis:
    Planar waveguides in which some range of the waveguide was modified by depositing on it a layer of some other dielectric, are called composite optical waveguides. Such a structure is based on a planar waveguide obtained by means of ion exchange $K^+-Na^+$ on glass, and covered by an adequately profiled dielectric layer. This kind of structure is of much interest due to considerable possibilities of taking measurements, which may contribute to a further development of the optoelectronic sensor. Especially required are sensor systems in chemistry, biochemistry, biotechnology, and others. Investigations on the properties of composite layers constitute a continuation of investigations concerning the construction of interferometers, which are very sensitive, cheap and easy to be produced.
    Źródło:
    Acta Physica Polonica A; 2008, 114, 6A; A-121-A-126
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of Optical Fiber Inertial Vibration Sensors
    Autorzy:
    Poczesny, T.
    Prokopczuk, K.
    Domanski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1418092.pdf
    Data publikacji:
    2012-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.81.Pa
    42.25.Bs
    42.79.Pw
    Opis:
    This paper presents the application and comparison of a macrobend seismic optical fiber accelerometer and ferrule-top cantilever fiber sensor (made by Optics11 - Amsterdam, Netherlands) both for long distance vibration monitoring. The sensors utilize typical telecommunication optical transmission systems with specially prepared sensing head. Both optical fiber sensors measure force and acceleration similar to the piezoelectric accelerometers. One of the advantages of these devices is insensitivity to electromagnetic interference because of lack of electrically driven elements in sensing head area. Experiments with wide ranges of frequencies and vibration amplitudes were performed. Main parameters and measurement capabilities of both sensor types were compared. Experimental results show usage possibility of both sensor types in industry and other explosion risk environments for vibration measurement and online monitoring.
    Źródło:
    Acta Physica Polonica A; 2012, 122, 5; 954-956
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Polarimetric Optical Fiber Sensors for Dynamic Strain Measurement in Composite Materials
    Autorzy:
    Domański, A.
    Bieda, M.
    Lesiak, P.
    Makowski, P.
    Szeląg, M.
    Poczęsny, T.
    Prokopczuk, K.
    Sobotka, P.
    Chychłowski, M.
    Sierakowski, M.
    Woliński, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1399338.pdf
    Data publikacji:
    2013-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.79.Pw
    42.25.Bs
    42.81.Pa
    Opis:
    Polarimetric optical fiber sensors possess possibility of temperature compensation, dynamic and integral system of strain monitoring, as well as low cost of photo-detecting elements. In the paper we present results of the sensor analysis with different kinds of birefringent optical fibers leading to an optimal setup for dynamic strain monitoring in composite materials. A great attention is put on parameters of the light sources like coherence and width of spectrum and their influence on dynamics of the strain sensor.
    Źródło:
    Acta Physica Polonica A; 2013, 124, 3; 399-401
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Results of Optical Signals Analyses Emitted by Electrical Discharges Recorded with UV Camera
    Autorzy:
    Frącz, P.
    Boczar, T.
    Borucki, S.
    Cichoń, A.
    Zmarzły, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1417952.pdf
    Data publikacji:
    2012-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    79.60.Bm
    42.79.Pw
    52.80.Hc
    Opis:
    In the article results of measurements and analyses of the optical signals emitted by electrical surface partial discharges occurring on bushing and post insulators, recorded with UV camera during tests under laboratory conditions are presented. The carried out research was to determine the effect of the distance between the insulator's electrodes and the voltage value on the number of partial discharges.
    Źródło:
    Acta Physica Polonica A; 2012, 122, 5; 814-817
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characteristic of Surface Partial Discharges Measured with Ultraviolet Camera
    Autorzy:
    Frącz, P.
    Zmarzły, D.
    Boczar, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1398747.pdf
    Data publikacji:
    2015-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.79.Pw
    79.60.Bm
    52.80.Hc
    Opis:
    The performed research works consider diagnosis of different models of support and bushing insulators. Insulator systems undergo aging processes, which causes deterioration of the insulating properties. In addition, pollutants that accumulate on the surface of high voltage insulators cause further reduction of the insulation properties. Presence of pollutants and high humidity level cause formation of conductive paths, which acts as a source of partial discharges. Presented results depict optical signals, recorded by ultraviolet camera, which were emitted by surface partial discharges occurring on different insulator models. In particular, the effect of the relative value of camera sensitivity on the number of surface partial discharges counts was evaluated. In addition, analysis of the effect of the surface partial discharges generation time on registered counts number was made. The experiments were performed at a constant voltage of $0.9U_{p}$ and for a distance between the HV electrode and GND equal to 10 cm. The experimental study lasted over a period of 30 min, while the measurement steps were done every minute.
    Źródło:
    Acta Physica Polonica A; 2015, 127, 3; 715-718
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of Optical Radiation Generated by Electrical Discharges on Support Insulator
    Autorzy:
    Frącz, P.
    Boczar, T.
    Zmarzły, D.
    Szczyrba, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1399341.pdf
    Data publikacji:
    2013-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    79.60.Bm
    42.79.Pw
    52.80.Hc
    Opis:
    Subject of the paper concerns determination of the feasibility and indication of the application scope of optical spectroscopy methods in the diagnosis of high-voltage insulators. Results of measurements of optical radiation emitted by partial and complete electrical discharges occurring on a support insulator model placed in air are presented in the paper. Registration was performed using a spectrophotometer, enabling for measurement of optical radiation in the range from 200 to 1800 nm. The primary objective of the laboratory tests was to evaluate the impact of supply voltage changes in the range from 0 to 60 kV on the intensity and spectral character of the optical radiation emitted by electric discharges generated on the porcelain insulation surface of the support insulator. In the scope of studies analyzes of the effects of voltage changes on the obtained spectral wave forms were performed, whereby voltage increase and reduction was examined separately. Additionally, measurements and analyzes carried out included impact estimation of the time period as the voltage was applied to the high-voltage electrodes on the course of optical phenomena related to the generation of electrical discharges.
    Źródło:
    Acta Physica Polonica A; 2013, 124, 3; 413-416
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An Influence of Silicon Substrate Parameters on a Responsivity of MOSFET-Based Terahertz Detectors
    Autorzy:
    Kucharski, K.
    Zagrajek, P.
    Tomaszewski, D.
    Panas, A.
    Głuszko, G.
    Marczewski, J.
    Kopyt, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1186027.pdf
    Data publikacji:
    2016-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    85.30.Tv
    85.60.Gz
    42.79.Pw
    Opis:
    Silicon n-channel MOS transistors are a promising solution for sub-terahertz radiation detection. Their sensitivity is strongly related to the device construction. A type and thickness of the device substrate are key parameters affecting the responsivity, because the silicon substrate is a medium for the radiation propagation and the radiation energy loss, which degrades the detection efficiency. This work is aimed at analysis of the silicon substrate characteristics effect on operation of the MOSFETs as the terahertz radiation sensors. A manufacturing of the MOSFETs on three different substrate types including changing the substrate thickness is described in the paper. Next, the fabricated devices were exposed to THz radiation and their photoresponses were measured. It may be concluded that MOSFETs on silicon-on-insulator wafers with locally thinned substrates demonstrate the highest photoresponse. However, the experiments with the MOSFETs on high resisivity wafers give also promising results.
    Źródło:
    Acta Physica Polonica A; 2016, 130, 5; 1193-1195
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optical Sensor of the Magnetic Field in Electrical Power Engineering
    Autorzy:
    Barczak, K.
    Pustelny, T.
    Zycki, Z.
    Blazejczyk, T.
    Dorosz, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1506720.pdf
    Data publikacji:
    2010-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.70.-a
    42.81.-i
    42.79.Pw
    78.20.Ls
    Opis:
    The authors of the presented paper deal with investigations concerning applications of the optical fiber sensor of the magnetic field in electric DC engines with permanent magnets. The aim of the sensor is to measure the state of magnetization of permanent magnets (basing on the measurements of magnetic field induction). The knowledge of the state of magnetization helps to decide whether permanent magnets need to be additionally magnetized in order to prevent damages of the whole engine. This can be done automatically, even when the engine is running. For the purpose the Faraday magnetooptic effect is used. The presented investigations concern an optical fiber sensor of the magnetic field provided with a glass rod characterized a high value of the Verdet constant as the sensing element. Thanks to the application of optical fibers the connection of the sensor head with the whole measuring system is constructed of insulating material without using of electrical connections.
    Źródło:
    Acta Physica Polonica A; 2010, 118, 6; 1090-1092
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of Photonic Crystal Fiber in Optical Fiber Current Sensors
    Autorzy:
    Barczak, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1417932.pdf
    Data publikacji:
    2012-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.70.-a
    42.79.Pw
    33.20.Kf
    42.25.Bs
    Opis:
    Optical fibers may be applied in the technique of measuring electric current, particularly as so-called optical current transducers. They are small in size, cheap, light and safe. Their sensitivity, however, connected with the Faraday effect, is rather poor, and they are also susceptible to considerable disturbances (deformations of the fibers). Their sensitivity can be increased by lengthening the path of effect, but this involves also an increase of noise and greater fluctuations of the measured signal due to changes of internal stresses induced by external factors. These negative phenomena can be reduced by applying fibers less sensitive to deformations. The author supposes that photonic crystal fiber with a glass core may display such properties. Orifices in the cladding can to some extent prevent the propagation of deformations from outside the core, and thus decrease the birefringence of the fiber induced by elastooptic effects. The paper presents preliminary measurements of typical photonic crystal fiber exposed to mechanical vibrations.
    Źródło:
    Acta Physica Polonica A; 2012, 122, 5; 793-795
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magnetooptic Effects in the Photonic Crystal Fiber as a Function of the Polarization State
    Autorzy:
    Barczak, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1399333.pdf
    Data publikacji:
    2013-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.25.Bs
    42.79.Pw
    33.20.Kf
    42.70.-a
    Opis:
    In optical fibers there exists an optical birefringence induced by external factors and stress produced in technological processes. The induced birefringence makes difficult to apply optical fibers in heads of polarimetric sensors. It has been proposed to use a photonic crystal fiber working in an index guiding regime due to the small value of stress in a fiber core produced by internal and external factors. This article presents an expansion of our earlier investigations. The expansion consists of investigations concerning the influence of external magnetic field induction on the state of polarization of light in the function of an azimuth of the input linear polarization ϕ. On the basis of the resulting characteristics optimal working points of the tested fiber were determined.
    Źródło:
    Acta Physica Polonica A; 2013, 124, 3; 384-386
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optical Fibre Current Sensor for Electric Power Industry
    Autorzy:
    Barczak, K.
    Pustelny, T.
    Dorosz, D.
    Dorosz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1506714.pdf
    Data publikacji:
    2010-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.70.-a
    42.81.-i
    42.79.Pw
    78.20.Ls
    Opis:
    The paper deals with the optical fibre current sensor based on new optical fibre made of glass with a high value of refractive index. This kind of glass was developed to meet the requirements of these optical fibres. The aim of investigations was to develop a new optical fibre with adequate magneto-optical properties and a relatively weak linear birefringence resulting from the process of its production. These features are of essential importance for optical fibre current sensors. The results of investigations concerning such optical fibres have been presented, displaying satisfactory magneto-optical properties, as well as only low linear birefringence induced by stresses arising in the course of their manufacturing.
    Źródło:
    Acta Physica Polonica A; 2010, 118, 6; 1087-1089
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    New Optical Glasses with High Refractive Indices for Applications in Optical Current Sensors
    Autorzy:
    Barczak, K.
    Pustelny, T.
    Dorosz, D.
    Dorosz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1795777.pdf
    Data publikacji:
    2009-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.70.-a
    42.81.-i
    42.79.Pw
    78.20.Ls
    Opis:
    The paper concentrates on the optical fibre sensors of electric current intensity. The specially elaborated glasses with high values of refractive indices were investigated in the prepared testing stand. The glasses have possessed the refractive index values n in the range 1.6 ≤ n ≤ 2.2. For the glasses the values of the Verdet constants for two waveguides: $λ_1$ = 635 nm and $λ_2$ = 1550 nm were determined. The obtained results showed that the elaborated on the base of new glasses optical fibres are much more sensitive on the action of magnetic field than the silica fibres.
    Źródło:
    Acta Physica Polonica A; 2009, 116, 3; 247-249
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Planar Photonic Crystals Biosensor Applications of $TiO_2$
    Autorzy:
    Erdiven, U.
    Karaaslan, M.
    Unal, E.
    Karadağ, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/1418288.pdf
    Data publikacji:
    2012-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.67.Pt
    42.70.Qs
    07.07.Df
    42.79.Pw
    Opis:
    We examine quality factor and sensitivity change depending on the resonant wavelength changing refractive index of surrounding liquid for $TiO_2$ photonic crystal slab structure. Photonic crystal slab structure is used widely for biological materials such as proteins, antigens, DNA, cells, virus particles and bacteria. Mentioned photonic crystal slabs are usable with large-area biosensor designs. They permit direct access to externally incident optical beams in a microfluidic device. Model calculations are based on two-dimensional periodic crystal structure. Photonic crystal slab consists of a square lattice of air holes in a finite-thickness dielectric slab. The time domain simulations were implemented by software MIT Electromagnetic Equation Propagation.
    Źródło:
    Acta Physica Polonica A; 2012, 122, 4; 732-736
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determination of Colour-Contrast Sensitivity of the Retina
    Autorzy:
    Kubarko, A.
    Firago, V.
    Hotra, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/1199150.pdf
    Data publikacji:
    2014-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    85.60.-q
    42.79.-e
    42.15.Eq
    07.07.Df
    42.79.Pw
    Opis:
    The computer methods for determining the map of colour-contrast sensitivity of the retina, suitable for mass screening of the earlier disturbances of visual and circulatory systems of humans, are discussed. The expressions for calculation, and the results of the determination of the threshold values of the photon fluxes at which young people detect the light stimulus in the shape of the red square with the side 2 mm, formed on the screen of CRT display, are given.
    Źródło:
    Acta Physica Polonica A; 2014, 125, 6; 1367-1370
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optical Fibre Magnetic Field Sensors for Monitoring οf the State of Work of Electric Motors
    Autorzy:
    Barczak, K.
    Pustelny, T.
    Zycki, Z.
    Blazejczyk, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1795778.pdf
    Data publikacji:
    2009-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.70.-a
    42.79.Hp
    42.81.-i
    42.79.Pw
    78.20.Ls
    Opis:
    The present paper deals with investigations concerning optical magnetic sensors. The most important advantage of sensors of this kind is their safety of service and insulating power. The insensitiveness of optical sensors to electromagnetic interference was discussed and experimentally investigated. The experimental investigations were concentrated on the adequate sensing fibre as well as on the sensor based on the bulk glass cylinder. The paper presents the results of magnetooptic tests of the elaborated magnetic field optical sensors and conclusions arise from them.
    Źródło:
    Acta Physica Polonica A; 2009, 116, 3; 250-253
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Photonic-Crystal Fibres with Suspended Core - Numerical Analyses
    Autorzy:
    Pustelny, T.
    Grabka, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1811518.pdf
    Data publikacji:
    2008-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.20.Ls
    07.07.Df
    42.79.Pw
    42.81.-i
    Opis:
    The paper gives a short description of light guidance mechanisms of index-guided photonic-crystal fibres. The results of numerical analyses of photonic-crystal fibres with a suspended core are presented. Such fibres are planned to be applied for investigation of magneto-optic effects in gaseous media.
    Źródło:
    Acta Physica Polonica A; 2008, 114, 6A; A-115-A-120
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Planar Optical Waveguides for Application in Optoelectronic Gas Sensors
    Autorzy:
    Golaszewska, K.
    Kamińska, E.
    Pustelny, T.
    Struk, P.
    Piotrowski, T.
    Piotrowska, A.
    Ekielski, M.
    Kruszka, R.
    Wzorek, M.
    Borysiewicz, M.
    Pasternak, I.
    Gut, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1811559.pdf
    Data publikacji:
    2008-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.82.Et
    07.07.Df
    42.79.Pw
    81.15.-z
    Opis:
    In the paper, the results of technological investigations on planar optical waveguides based on high band gap oxide semiconductors were presented. Investigations concerned the technologies of depositing very thin layers of: zinc oxide ZnO, titanium dioxide $TiO_2$ and tin dioxide $SnO_2$ on substrates of quartz glass plates. There were investigated both morphological structures of the produced layers and their optical properties. The paper also presents investigations on the technology of input-output light systems in the Bragg grating structures.
    Źródło:
    Acta Physica Polonica A; 2008, 114, 6A; A-223-A-230
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of TDMAAs Acceptor Precursor on Performance Improvement of HgCdTe Photodiodes
    Autorzy:
    Madejczyk, P.
    Gawron, W.
    Piotrowski, A.
    Kłos, K.
    Rutkowski, J.
    Rogalski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1506804.pdf
    Data publikacji:
    2010-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.79.Pw
    07.57.Kp
    73.21.Cd
    78.67.Pt
    79.60.Jv
    Opis:
    One of the key factor which determine HgCdTe photodiode quality is acceptor doping efficiency. This paper presents significant progress made over the past three years in development of acceptor doping technology in metalorganic chemical vapour deposition HgCdTe photovoltaic detectors. High acceptor doping is required for $P^{+}$-contact layers, whereas low doping is necessary for p-type absorbing base layer. Previously, $AsH_3$ precursor was used as an acceptor dopant. This precursor is partially incorporated as electrically neutral As-H pairs, which are likely to be recombination centres in HgCdTe and in consequence influence on the carriers lifetime lowering. Substituting of $AsH_3$ by TDMAAs resulted in higher carrier lifetimes and thereby about one order of magnitude higher $R_0A$ product of HgCdTe photodiodes in temperatures close to 230 K.
    Źródło:
    Acta Physica Polonica A; 2010, 118, 6; 1199-1204
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Infrared Detectors for the Future
    Autorzy:
    Rogalski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1807754.pdf
    Data publikacji:
    2009-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.79.Pw
    07.57.Kp
    73.21.Cd
    78.67.Pt
    79.60.Jv
    Opis:
    In the paper, fundamental and technological issues associated with the development and exploitation of the most advanced infrared detector technologies are discussed. In this class of detectors both photon and thermal detectors are considered. Special attention is directed to HgCdTe ternary alloys on silicon, type-II superlattices, uncooled thermal bolometers, and novel uncooled micromechanical cantilever detectors. Despite serious competition from alternative technologies and slower progress than expected, HgCdTe is unlikely to be seriously challenged for high-performance applications, applications requiring multispectral capability and fast response. However, the nonuniformity is a serious problem in the case of LWIR and VLWIR HgCdTe detectors. In this context, it is predicted that type-II superlattice system seems to be an alternative to HgCdTe in long wavelength spectral region. In well established uncooled imaging, $VO_x$ microbolometer arrays are clearly the most used technology. In spite of successful commercialization of uncooled microbolometers, the infrared community is still searching for a platform for thermal imagers that combine affordability, convenience of operation, and excellent performance. Recent advances in microelectromechanical systems have led to the development of uncooled IR detectors operating as micromechanical thermal detectors. Between them the most important are biomaterial microcantilevers.
    Źródło:
    Acta Physica Polonica A; 2009, 116, 3; 389-406
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-24 z 24

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies