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Wyszukujesz frazę "87.64.Cc" wg kryterium: Wszystkie pola


Wyświetlanie 1-2 z 2
Tytuł:
Measurement of Small Variations in Optical Properties of Turbid Inclusions with Respect to Surrounding Turbid Medium
Autorzy:
Bliznakova, I.
Vankov, O.
Dreischuh, T.
Avramov, L.
Stoyanov, D.
Powiązania:
https://bibliotekanauki.pl/articles/1795702.pdf
Data publikacji:
2009-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.15.N-
87.64.-t
87.64.Cc
87.80.-y
87.80.Ek
Opis:
Special optical system for non-invasive determination of small variations in the optical properties of homogeneous turbid inclusions embedded into large turbid medium is proposed and developed experimentally. Results for different choice of the optical parameters of both media are presented. The minimum detectable changes in the inclusion optical properties are estimated to be less than 5% with respect to the surrounding medium. It is shown that the output signals depend not only on the relative magnitude but also on the sign of the difference in optical properties of both media. The results could be used for developing techniques and algorithms for distinguishing of different kinds of abnormal formations.
Źródło:
Acta Physica Polonica A; 2009, 116, 4; 681-683
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Photon Force-Induced Phase Transition Dynamics of Single Hydrogel Nanoparticles in Water
Autorzy:
Hosokawa, C.
Matsumura, Y.
Yoshikawa, H.
Iwai, K.
Masuhara, H.
Powiązania:
https://bibliotekanauki.pl/articles/1813984.pdf
Data publikacji:
2007-12
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.80.Cc
33.50.Dq
61.25.Hq
87.64.-t
Opis:
We investigated laser-induced phase transition dynamics of μm sized single poly(N-isopropylacrylamide) hydrogel particles in water. Single poly(N-isopropylacrylamide) gel particles labeled with a polarity-sensitive fluorescent probe monomer were optically trapped by a focused laser beam and its fluorescence dynamics was analyzed. The fluorescence intensity of trapped single gel particles was increased with the trapping laser power, while the fluorescence peak wavelength was not changed. Temperature-induced changes of fluorescence properties of the single particle were confirmed to be similar to those of the bulk solution. These behaviors are well interpreted by considering that the fluorescence intensity and fluorescence peak reflect local interactions between the fluorescent probe and attaching (bound) water molecules and effective polarity determined by (free) water content in the particle, respectively. A change in the fluorescence peak wavelength after laser trapping was followed and its blue-shift was confirmed to occur within a few hundreds seconds, indicating that a single gel particle gradually attains to a globular state on this timescale, expelling initially free water molecules and then bound ones.
Źródło:
Acta Physica Polonica A; 2007, 112, S; S-57-S-70
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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