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Wyszukujesz frazę "87.64.M-" wg kryterium: Temat


Wyświetlanie 1-7 z 7
Tytuł:
Implementation of NSOM to Biological Samples
Autorzy:
Prauzner-Bechcicki, S.
Wiltowska-Zuber, J.
Budkowski, A.
Lekka, M.
Rysz, J.
Powiązania:
https://bibliotekanauki.pl/articles/1490227.pdf
Data publikacji:
2012-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.64.M-
87.64.mt
Opis:
Near-field scanning optical microscopy is a technique providing images of structures with spatial resolution better than λ/2, which is undetectable in far-field where the Abbe law of limiting resolution is critical. In parallel to the optical imaging, topography maps are also acquired. Near-field scanning optical microscopy measurements can be performed both in air and liquid environments. The later makes the technique very useful for biomaterials analysis offering information that could not be obtained with other methods. Our work presents the results of recent studies on application of near-field scanning optical microscopy to imaging of cells in air as well as in physiological buffers. Differences in cell's topography and morphology have been noticed between two cell lines from human bladder non-malignant (HCV29) and malignant (T24) cancers. Presented results are part of the research that characterizes physiological changes of cells depending on stage of cancer.
Źródło:
Acta Physica Polonica A; 2012, 121, 2; 533-538
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Plasmon Enhancement of Fluorescence in Single Light-Harvesting Complexes from em Amphidinium carterae
Autorzy:
Bujak, Ł.
Piątkowski, D.
Mackowski, S.
Wörmke, S.
Jung, C.
Bräuchle, C.
Agarwal, A.
Kotov, N.
Schulte, T.
Hofmann, E.
Brotosudarmo, T.
Scheer, H.
Govorov, A.
Hiller, R.
Powiązania:
https://bibliotekanauki.pl/articles/1807594.pdf
Data publikacji:
2009-12
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.80.Nj
87.14.E-
87.64.M-
Opis:
We show that single peridinin-chlorophyll a-protein light-harvesting complexes from dinoflagellate Amphidinium carterae placed near to silver nanoparticles show strongly enhanced fluorescence emission. Single molecule spectroscopy experiments performed at room temperature point toward an enhancement of more than an order of magnitude for optimal conditions. Irrespective of the enhancement, we observe no effect of the metal nanoparticle on the fluorescence emission energy of the complex. This result provides a way to control the optical properties of biomolecules via plasmon excitations in metal nanoparticles.
Źródło:
Acta Physica Polonica A; 2009, 116, S; S-22-S-25
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fluorescence Mapping of PCP Light-Harvesting Complexes Coupled to Silver Nanowires
Autorzy:
Krajnik, B.
Piatkowski, D.
Olejnik, M.
Czechowski, N.
Hofmann, E.
Heiss, W.
Mackowski, S.
Powiązania:
https://bibliotekanauki.pl/articles/1419489.pdf
Data publikacji:
2012-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.64.kv
42.62.Fi
81.07.Pr
87.64.M-
Opis:
In this work we demonstrate confocal fluorescence imaging of hybrid nanostructures composed of silver nanowires and peridinin-chlorophyll-protein light-harvesting complexes. The length of silver nanowires, which reaches 10 μm, allows for determination of the nanowire position and consequently direct correlation with the fluorescence image. In this way we probe the influence of plasmon induced electromagnetic field on the fluorescence of light-harvesting complexes. When the nanowires are spaced from the light-harvesting complexes by a 10 nm thick dielectric layer, we observe a fluorescence enhancement, which depends upon the laser excitation wavelength. The measured enhancement values are 2.5 and 1.9 for 405 nm and 485 nm, respectively. Larger enhancement for the 405 nm excitation is attributed to direct creation of plasmon excitations in the silver nanowires.
Źródło:
Acta Physica Polonica A; 2012, 122, 2; 259-262
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Distribution of Biological Particles Suspended in Normal Cerebrospinal Fluid (CSF)
Autorzy:
Staroń, W.
Herbowski, L.
Powiązania:
https://bibliotekanauki.pl/articles/1537551.pdf
Data publikacji:
2010-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.64.M-
02.50.-r
61.20.-p
Opis:
Cerebrospinal fluid's functions are protecting, expelling and transporting which are influenced by properties of the fluid. Disorder of one of the functions may bring a disease. Cerebrospinal fluid mainly consists of water (99%), cells and proteins suspended in it. Due to the suspension it can be considered as dispersion medium. Every dispersion medium is characterized by the parameters of particles suspended in it. Parameters of dispersion medium may be classified as single or cumulative parameters. Hence, there is possible to determine additional parameters which characterize CSF in order to give full description of the fluid. The authors present results of research on suspension in normal cerebrospinal fluid worked out on the basis of 2500 microscoping pictures and they also give a statistical analysis of particle diameters. The paper is a part of research project on "Physico-chemical processes in cerebrospinal fluid obtained by puncture from patients diagnosed with the disorders of cerebrospinal fluid (CSF) circulation" realized by Institute of Physics, University of Szczecin in co-operation with Neurosurgery Ward of Public Provincial Hospital Complex in Szczecin.
Źródło:
Acta Physica Polonica A; 2010, 118, 1; 159-160
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preliminary Analysis of Size Distribution of Objects Suspended in Normal Cerebrospinal Fluid in Case of Venticular Hydrocephalic Enlargement and Internal Hydrocephalus
Autorzy:
Staroń, W.
Kubisz, L.
Herbowski, L.
Powiązania:
https://bibliotekanauki.pl/articles/1490409.pdf
Data publikacji:
2012-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.64.M-
02.50.-r
61.20.-p
Opis:
The paper presents preliminary analysis of normal non-coloured cerebrospinal fluid obtained from patients diagnosed due to suspicion of cerebrospinal fluid malabsorption. According to the findings, the normal cerebrospinal fluid was classified into two groups: A - with clinical diagnosis of ventricular hydrocephalic enlargement and B - with clinical diagnosis of internal hydrocephalus. The analysis of microscopic pictures of normal cerebrospinal fluid in both groups according to numbers and sizes of suspended objects was performed with the aid of Eclipse 600 microscope (with magnification of 1200×) working with a computer by a digital video camera. The authors observed that there is a significant difference in a shape of the distribution curve of objects' diameters between groups A and B. The maximum number of objects in group A was recorded within the range from 5 to 10 μm in diameter size whereas in group B the maximum was recorded within the range from 0.5 to 5 μm in diameter size.
Źródło:
Acta Physica Polonica A; 2012, 121, 1A; A-046-A-048
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Realization of a Phase Noise Measurement Bench Using Cross Correlation and Double Optical Delay Line
Autorzy:
Salzenstein, P.
Cussey, J.
Jouvenceau, X.
Tavernier, H.
Larger, L.
Rubiola, E.
Sauvage, G.
Powiązania:
https://bibliotekanauki.pl/articles/2047892.pdf
Data publikacji:
2007-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
06.30.Ft
43.50.Yw
87.64.M-
87.57.cm
Opis:
In this paper there are presented first results obtained with a phase noise measurement bench operating in X-band, realized in our laboratory, using double optical delay line and cross correlation. Phase noise floor using a microwave sapphire oscillator is better than -160 dB rad$\text{}^{2}$/Hz at 10 kHz from the 10 GHz carrier, using a 2 km optical delay line.
Źródło:
Acta Physica Polonica A; 2007, 112, 5; 1107-1111
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optical Mini-Disk Resonator Integrated into a Compact Optoelectronic Oscillator
Autorzy:
Salzenstein, P.
Tavernier, H.
Volyanskiy, K.
Kim, N.
Larger, L.
Rubiola, E.
Powiązania:
https://bibliotekanauki.pl/articles/1795637.pdf
Data publikacji:
2009-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
06.30.Ft
43.50.Yw
87.64.M-
87.57.cm
Opis:
This work consists in the design, fabrication and characterization of mini-disk $MgF_{2}$ resonators for integration into optoelectronic oscillator and first experimental results of implementation in microwave free spectral range oscillator with taper coupling optoelectronic oscillator.
Źródło:
Acta Physica Polonica A; 2009, 116, 4; 661-663
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-7 z 7

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