Silver-halide photographic materials based on nanoporous glasses

Andreeva, O. V.; Obyknovennaya, I. E.; Gavrilyuk, E. R.; Paramonov, A.; Kushnarenko, A. P.

doi:10.1364/jot.72.000916

Cited by 21 publications

(9 citation statements)

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“…Two samples of different nanoporous glasses were used: Vycor and DV‐1 M. The samples have different mean pore radii, 2 and 3.5 nm respectively, with the same widths of the radius distribution of ~0.5 nm.…”

Section: Methodsmentioning

confidence: 99%

CARS diagnostics of fluid phase behavior in small mesopores at near‐critical temperatures

Arakcheev

Morozov

2013

J Raman Spectroscopy

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Coherent anti-Stokes Raman scattering (CARS) spectroscopy is applied to investigate the fluid phase behavior in small mesopores at bulk sub-and supercritical temperatures. CARS spectra of the Q-branch (1388 cm À1 ) of carbon dioxide were measured at isothermal compression in pores of two nanoporous glass samples with pore radii of 2 and 3.5 nm. The spectral transformations with pressure of the fluid indicate the formation of a condensed phase in the volume of pores that clearly demonstrates the shift of the critical point. The spectrum of carbon dioxide condensed in the wider pores corresponds approximately to the critical density in bulk. In the narrower pores, the spectrum is noticeably shifted towards the lower wavenumbers that correspond to higher density of condensed fluid.

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Section: Methodsmentioning

confidence: 99%

CARS diagnostics of fluid phase behavior in small mesopores at near‐critical temperatures

Arakcheev

Morozov

2013

J Raman Spectroscopy

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“…In our experiments, we used two samples of different nanoporous glasses: Vycor [11] and DV-1M [12] . They had different mean pore radii, 2 and 3.5 nm, respectively, with the same widths of the radius distribution of ∼0.5 nm.…”

Section: Nanopopous Samplesmentioning

confidence: 99%

CARS diagnostics of fluid adsorption and condensation in small mesopores

Andreeva

Arakcheev

Баграташвили

et al. 2011

J Raman Spectroscopy

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Coherent anti-Stokes Raman scattering (CARS) spectroscopy is applied to diagnostics of phase behavior of a fluid in pores of nanoporous glasses. Samples with mean pore radii of 2 and 3.5 nm were filled with compressed carbon dioxide at near-room temperatures. CARS spectra of the 1388 cm −1 Q-branch were measured at isothermal compressing in a wide pressure range including the transition from gaseous to condensed state. The spectra show specific transformations caused by fluid adsorption and condensation in nanopores. We have carried out calculations of the spectral profiles based on the phase behavior of carbon dioxide in cylindrical glass nanopores. Phase behavior modeling was performed using thermodynamic concepts of surface adsorption and capillary condensation. A good agreement between experimental spectra and calculations was obtained. The potential of CARS technique for the diagnostics of fluid phase behavior in pores and for the characterization of nanoporous host structure is discussed.

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“…In this case, only the inert pore wall will have an effect on nanoparticle properties. Nanoporous silica glasses (NPGs) [20,21] contain through pores whose average size can be varied from several nanometers to tens of nanometers by varying their synthesis conditions. The NPG framework con sists of 90-95% SiO 2 and is chemically inert.…”

Section: Introductionmentioning

confidence: 99%