&lt;title&gt;Relief-electro-optical transparent medium for optical information processing&lt;/title&gt;

Cherkasov, Yuri A.; Alexandrova, Elena Lvovna; Smirnov, Mikhail; Sidorovich, E. A.

doi:10.1117/12.166029

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“…While ~2 does increase somewhat with increasing thickness, there are other changes in morphology that appear to be more important. For example, x-ray studies (17) show that crystallinity is greater in thick films, while optical bire-fringence studies (18) show that thicker films have a poorer alignment of polymer chains than the thin ones. This latter factor undoubtedly explains both the small decrease in density and the increase in D with increasing thickness.…”

Section: Discussionmentioning

confidence: 99%

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Diffusion and Deuteron Nuclear Magnetic Resonance Study of the Distribution of Water Molecules in Polyimide Films

Pak

Adamić

et al. 1992

J. Electrochem. Soc.

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The nature and distribution of water molecules in polyimide (KAPTON) films of varying thickness is studied by diffusion and deuteron (2H) nuclear magnetic resonance spectroscopy with complementary studies of IR absorption and differential scanning calorimetry. The results supports the conclusion, drawn from a previous study, that water exists in two distinct sites called ~ and ~2, neither of which is strongly bound to the host polymer nor is isotropically free. The water molecules in the ~ site are distributed uniformly throughout the volume of the film, while those in the ~2 site (which are filled only at higher values of relative humidity) appear to be in small molecular clusters.ABSTRACT Cathode dissolution is a major problem for the development of the molten carbonate fuel cell. In order to evaluate the stability of the cathode, the solubility of NiO has been measured for several Compositions of molten alkaline carbonates in the COs pressure range from 10 .5 to 1 atm and the temperature range from 873 to 1023 K. The solubility depended on the CO, pressure, although the solubility of NiO was independent of either O2 or H20 pressure. In any composition of the Li/K and LENa carbonate melts, the acid dissolution has been observed at higher COs pressure and the basic dissolution has been observed at low COs pressure. NiO was found to be more stable in Li rich or Li/Na melts than in the Li/K eutectic melt.

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Section: Discussionmentioning

confidence: 99%

“…This was Paper 271 presented at the Hollywood, FL, Meetingoof the Society, Oct. [15][16][17][18][19][20] 1989. This was Paper 271 presented at the Hollywood, FL, Meetingoof the Society, Oct. [15][16][17][18][19][20] 1989.…”

Section: Acknowledgmentsmentioning

confidence: 99%

Diffusion and Deuteron Nuclear Magnetic Resonance Study of the Distribution of Water Molecules in Polyimide Films

Pak

Adamić

et al. 1992

J. Electrochem. Soc.

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<title>Relief-electro-optical transparent medium for optical information processing</title>

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Diffusion and Deuteron Nuclear Magnetic Resonance Study of the Distribution of Water Molecules in Polyimide Films

Diffusion and Deuteron Nuclear Magnetic Resonance Study of the Distribution of Water Molecules in Polyimide Films

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