Temat: 42.87.-d - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Acquisition of the Surface Morphology of Ruled Gratings with a Microscope Objective
Autorzy:: Li, Z.
Ma, L.
Liu, C.
Zhang, M.
Chen, X.
Cheng, C.
Powiązania:: https://bibliotekanauki.pl/articles/1189791.pdf
Data publikacji:: 2015-06
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 42.30.Kq
42.87.-d
42.79.Dj
42.40.Kw
Opis:: In this paper, an optical microscope objective with large numerical number is inserted into a Mach-Zehnder interferometer, and this system is adopted to detect the surface morphologies of two ruled transmission gratings with area scale to a micrometer. The object waves transmitting from the gratings interfere with spherical reference wave, and the interferograms constructed are recorded by a high-resolution CCD. The surface maps of the gratings are retrieved from the interferograms, and the results are confirmed by the measurement with an atomic force microscope, with detection errors in nanometer scale. This work provides an optical non-destructive method for precise detection of small-area sophisticated object surfaces with an optical microscope objective.
Źródło:: Acta Physica Polonica A; 2015, 127, 6; 1630-1633
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Applications of a compact "water window" source for investigations of nanostructures using SXR microscope
Autorzy:: Torrisi, A.
Wachulak, P.
Fahad Nawaz, M.
Bartnik, A.
Adjei, D.
Vondrová, Š.
Turňová, J.
Jančarek, A.
Fiedorowicz, H.
Powiązania:: https://bibliotekanauki.pl/articles/1065141.pdf
Data publikacji:: 2016-02
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 52.38.-r
42.30.-d
42.62.-b
87.59.-e
68.37.Yz
07.85.Tt
41.50.+h
42.79.Dj
Opis:: A compact soft X-ray microscope based on a nitrogen double-stream gas puff target soft X-ray source, operating at He-like nitrogen spectral line at the wavelength of λ =2.88 nm is presented. The desk-top size microscope was successfully demonstrated in transmission mode using the Fresnel zone-plate objective and it is suitable for soft X-ray source microscopy in the "water window" spectral range (λ = 2.3÷ 4.4 nm). Details about the soft X-ray source source, the microscope and an example of application in the biomedical field are shown and discussed.
Źródło:: Acta Physica Polonica A; 2016, 129, 2; 169-171
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Cross-Sectional Imaging of Materials Structure Using PS-OCT
Autorzy:: Strąkowski, M.
Pluciński, J.
Kosmowski, B.
Powiązania:: https://bibliotekanauki.pl/articles/1811558.pdf
Data publikacji:: 2008-12
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 42.79.-e
42.87.-d
Opis:: Optical low-coherence tomography is a measurement technique for non-contact and non-destructive investigation of materials inner structure. Nowadays, this method is highly applied in medical treatment especially in dermatology and ophthalmology. During our research we have developed an optical low-coherence tomography system with polarization state analysis for structure examination of a broad range of technical materials. In this paper we present our recent measurements including polarization sensitive analysis. Those measurements were taken for semitransparent and highly scattering materials like polymer layers and polymer optical retarders, anticorrosion protective coatings or abrasive paper. We proved that with the aid of developed polarization sensitive optical coherence tomography system it is possible to investigate birefringence principles of materials as well as to improve visualization contrast of cross-sectional images.
Źródło:: Acta Physica Polonica A; 2008, 114, 6A; A-217-A-221
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Epidermal Layers Characterisation by Opto-Magnetic Spectroscopy Based on Digital Image of Skin
Autorzy:: Koruga, Đ.
Bandić, J.
Janjić, G.
Lalović, Č.
Munćan, J.
Dobrosavljević Vukojević, D.
Powiązania:: https://bibliotekanauki.pl/articles/1489823.pdf
Data publikacji:: 2012-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 43.58.Bh
07.05.Pj
42.79.-e
42.30.-d
42.25.Ja
87.64.Dz
Opis:: According to the most literature data, the skin is usually observed as a simple structure with equivalent electrical model, which includes general properties of epidermis, basal membrane and dermis. In this paper, we analyzed the skin structure as a more complex system. Particularly we analyzed epidermis based on layers approach and its water organization in lipids ordered in sub-layers. Using opto-magnetic spectroscopy method, which is very sensitive to paramagnetic/diamagnetic properties of the tissue, we found out that nanowater structure ordering in lipids of epidermal layers play very important role in skin properties. We use bioimpedance as complementary and compatible method to opto-magnetic spectroscopy in skin characterization. In our investigation we found out the difference of the skin properties of the people who are drinking two different type of water (Z and N). We observed the significant difference in middle part of stratum granulosum, where water-lipid sub-layers exists. These results indicate importance of water nanolayers presence in epidermis and type of drinking water reflecting on human skin properties.
Źródło:: Acta Physica Polonica A; 2012, 121, 3; 606-610
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Identification of Gastric Cancer from Speckle Patterns
Autorzy:: Andrade-Eraso, C.
Patiño-Velasco, M.
Vásquez-López, J.
León, J.
Bolaños-Pantoja, G.
Trivi, M.
Powiązania:: https://bibliotekanauki.pl/articles/1490749.pdf
Data publikacji:: 2012-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 78.68.+m
42.87.-d
87.50.W-
Opis:: Speckle technique is based on the light intensity distribution randomly formed when a laser light is reflected on a rough surface, creating a pattern of illuminated grains (constructively) and dark (destructive) on scales of 1 μm. When the samples are displaced or deformed, the speckle pattern is altered. In this paper we present speckle patterns obtained from samples of gastric mucosa that is physically altered for the carcinogenesis process. Biopsies were studied with different diagnoses and were grouped according to the characteristics of speckle patterns. Speckle patterns were obtained by illuminating the samples with green laser. Morphological parameters of the speckle patterns reveal existence of 3 descriptors: the average grain size, hydraulic radius and the radio of the Weddel disc, which showed a high, intermediate and low value. The comparison shows agreement between the histopathological diagnosis and the values obtained by the speckle technique, making this technique emerge as a new classification system for quantitative diagnosis of precancerous lesions.
Źródło:: Acta Physica Polonica A; 2012, 121, 1; 62-64
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Opto-Magnetic Method for Epstein - Barr Virus and Cytomegalovirus Detection in Blood Plasma Samples
Autorzy:: Papić-Obradović, M.
Kojić, D.
Matija, A.
Powiązania:: https://bibliotekanauki.pl/articles/1537895.pdf
Data publikacji:: 2010-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 33.20.Kf
33.57.+c
42.25.Ja
42.30.-d
42.70.Jk
87.19.xd
Opis:: Motivated by characterization of paramagnetic materials (Al, Mn and Ti) and diamagnetic materials (Cu, C and Zn) by opto-magnetic method that is based on light-matter interaction using digital imaging, we present results of Epstein-Barr virus (EBV) and cytomegalovirus (CMV) detection in blood plasma. To investigate light-blood plasma interaction we use wavelength difference of diffuse white light and reflected polarized light in red and blue channels of digital images (opto-magnetic method). Digital images of samples are analyzed by spectral convolution algorithm for light-matter interaction analysis. Since opto-magnetic method can detect very small difference between normal and pathological tissue states it is advantageous in comparison with classical methods. Especially it is important for early detection of suspicious tissue states and detection of viral infection presence in plasma. We compared our results with results of standard biomedical test for EBV and CVM, as a reference, and found out for group of 40 samples significant correlation of 93. 6%.
Źródło:: Acta Physica Polonica A; 2010, 117, 5; 782-785
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Polarization Sensitive Optical Coherence Tomography with Spectroscopic Analysis
Autorzy:: Strąkowski, M.
Pluciński, J.
Kosmowski, B.
Powiązania:: https://bibliotekanauki.pl/articles/1493325.pdf
Data publikacji:: 2011-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 42.79.-e
42.87.-d
42.79.Sz
42.79.Ta
Opis:: The optical coherence tomography is an optical measurement technique used for investigation of wide range of scattering or semitransparent materials. The optical coherence tomography enables surface and subsurface examination of different types of materials to be performed in non-contact and non-destructive way. Our research have been concentrated on optical coherence tomography systems with polarization sensitive analysis. Such a combination of optical measurements methods improves optical coherence tomography visualization contrast and also delivers some extra information about investigated devices. However, applying polarization sensitive analysis is associated with problems related to the use of ultra broadband optical sources. We have managed studies on the improvement of signal processing method. According to obtained results the problem of signal processing method in polarization sensitive optical coherence tomography can be solved by the use of the spectroscopic analysis. In this paper we present a brief discussion about the polarization sensitive optical coherence tomography measurements supported by spectroscopic analysis of backscattered light from investigated device.
Źródło:: Acta Physica Polonica A; 2011, 120, 4; 785-788
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: The Evaluation of Solid Particle Erosion in Polymethyl Methacrylate by Surface Topography Mapping
Autorzy:: Fidan, S.
Powiązania:: https://bibliotekanauki.pl/articles/1194942.pdf
Data publikacji:: 2014-02
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 78.68.+m
42.79.Ls
42.87.-d
81.05.Qk
Opis:: The present work introduces and demonstrates a novel high resolution surface topography method for mapping the distribution of erosive wear in polymethyl methacrylate. The technique is based on grayvalues obtained from eroded sample surfaces and three-dimensional surface topography mapping from these grayvalues. Surface topography maps make it a valuable method for fundamental studies on erosive wear. In the present investigation, a flatbed scanner system has been used for obtaining the surface images of eroded test samples. Polymethyl methacrylate test samples eroded with 80 and 120 mesh alumina particles at 1.5 and 3 bar blast pressures and their surface topography maps compared. Erosive wear is difficult to visualize for its dynamic and complex nature, hence monitoring of erosive wear in industrial applications is rather important. High resolution surface topography method detail capturing capability may improve tribological surface damage characterization of real machine elements. Reduced costs and simplicity two primary outcomes of using a simple flatbed scanner system in non destructive testing of erosive wear.
Źródło:: Acta Physica Polonica A; 2014, 125, 2; 494-496
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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