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Keywords: high-pressure

Novel CNT-polymer Nanocomposites used in Oilfield for High Temperature, High Pressure Sealing

Ito M., Schlumberger, JP
A novel sealing system base on MWNT (multiwalletd carbon nanotubes) and polymer nanocomposites was developed for the use in the exploration and development of hotter, deeper reservoirs. Fully dispersed and better bonding are two critical [...]

Novel CNT-polymer Nanocomposites used in Oilfield for High Temperature, High Pressure Sealing

Ito M., Schlumberger, JP
A novel sealing system base on MWNT (multiwalletd carbon nanotubes) and polymer nanocomposites was developed for the use in the exploration and development of hotter, deeper reservoirs. Fully dispersed and better bonding are two critical [...]

Crystallization and optical properties of CCTO thin films under pressure influence

Sequinel T., Tebcherani S.M., Varela J.A., Kubaski E.T., Oliveira L.H., Siu Li M., Universidade Estadual Paulista, BR
The goals of this work were to decrease the synthesis temperature of CCTO thin films using the pressure method, and to improve the homogeneity and density of the CCTO films in order to obtain better [...]

Tuning the Gas Pressure Discharge of Nanoenergetic materials by Boron and Carbon Nanotube Additives

Martirosyan K.S., Wang L., Luss D., University of Texas at Brownsville, US
Thermite reactions are highly exothermic and may rapidly release high amount of stored chemical energy in the form of heat, light and wave. Nanothermite formulations that use aluminum or magnesium as the reducing agent and [...]

Nano-Diamond compressibility at pressures up to 85 GPa

Pantea C., Zhang J., Qian J., Zhao Y., Migliori A., Grzanka E., Palosz B., Wang Y., Zerda T.W., Liu H., Ding Y., Stephens P.W., Botez C.E., Los Alamos National Laboratory, US
According to the core-shell model nanocrystals consist of a uniform core surrounded by a surface shell. Crystallographic structure of the surface shell is the same as that of the core but interatomic distances in the [...]

Diamond Growth on an Array of Seeds: The Revolution of Diamond Production

Sung J.C-M, Tai M-F, Kinik Company, TW
Industrial diamond production was pioneered by General Electric Company of U. S. in 1957 and followed by De Beers of S. Africa in 1961. The two companies optimized the production of diamond grits by heating [...]

Transport Properties For Carbon Nanotubes Under Hydrostatic Pressure

Chen F., Xue Y.Y., Stokes K.L., Wang H., Chu C.W., University of Houston, US
Multi-wall carbon nanotubes (MWNTs) were mixed with polystyrene (PS) by 20 wt%, which is close to the percolation threshold. Temperature (T) dependence of Seebeck coefficient (S) and resistance (R) for the sample (MWNT-PS) were measured [...]

Ab Initio Molecular Dynamics Study of the Pressure Induced Phase Transformations in Cristobalite

Klug D.D., Rousseau R., Uehara K., Bernasconi M., Tse J.S., National Research Council of Canada, CA
The mechanism for the pressure induced transformation of cristobalite to stishovite and post-stishovite phases has been obtained from constant pressure ab initio molecular dynamics simulations. The cristobalite to stishovite transformation is found to be a [...]

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