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CARS spectroscopy as a tool for characterization of composite systems based on nanoporous structuresтезисы доклада
- Авторы: Arakcheev V.G., Bagratashvili V.N., Morozov V.B., Popov V.K.
- Сборник: 10th European Conference on Nonlinear Spectroscopy ECONOS’2011 and 30th European CARS Workshop 2011, Book of Abstracts
- Тезисы
- Год издания: 2011
- Место издания: University of Twente Twente, Netherlands
- Первая страница: 17
- Последняя страница: 17
- Аннотация: Recently we have developed a spectroscopic approach, based on CARS, to diagnostics of a fluid phase behavior at adsorption and condensation in pores of 3D nanoporous host [1,2]. Indeed, each phase (gaseous, adsorbed, or liquid-like) of a fluid is characterized by its specific vibrational spectrum; therefore the phase composition in the system can be determined by analysis of the inhomogeneous lineshape. Later, a thermodynamic analysis of phase behavior of carbon dioxide at compression in pores of nanoporous glass has been carried out [3]. The CARS spectrum transformations obtained in experiment were in a good agreement with thermodynamic predictions. Here we expand the developed approach to diagnostics of nanopore radius which has the order down to several nanometers. The spectroscopic data together with thermodynamic analysis are used for this purpose. We present here the experimental results proving the applicability of presented approach. Also, some phenomenological analysis of spectroscopic data leading to estimation of pore radius distribution is proposed. References: 1. Arakcheev VG, Valeev AA, Morozov VB, Olenin AN. Laser Physics. 2008, 18(12): 1451. 2. Arakcheev VG, Bagratashvili VN, Valeev AA, Morozov VB, Olenin AN, Popov VK, Tunkin VG. Moscow University Physics Bulletin. 2008, 6: 388. 3. Arakcheev VG, Valeev AA, Morozov VB. Moscow University Physics Bulletin. 2011, 2, in press.
- Добавил в систему: Аракчеев Владимир Генрихович