... Experimental Section. ... for the contact angle measurement and the spreading experiments wer... more ... Experimental Section. ... for the contact angle measurement and the spreading experiments were introduced with a precision micrometer syringe (Model no. ... into the role of substrate surface energy, they generally support the conclusions based on previous studies using Parafilm ...
A technique has been developed for accurately inferring pressure in the diamond anvil cell in the... more A technique has been developed for accurately inferring pressure in the diamond anvil cell in the relatively low pressure range of 0 to 6 kbar. The method is directly applicable to dilute solution studies using hydrocarbon solvents. A procedure is described for using the method with more concentrated solutions and with moderately polar organic solvents. The frequency shift of anthracene absorbance in five hydrocarbon solvents has been measured in the 0 to 2 kbar range and extended to 6 kbar. Pressures in this range were measured in the diamond anvil cell as a function of applied load. Results indicated serious difficulties in correlating pressure and applied load. A pronounced hysteresis was also observed.
Polyethylene trisiloxane surfactants M(D′En)M (n=6, 8, 10, 12) self assemble into sheet-like stru... more Polyethylene trisiloxane surfactants M(D′En)M (n=6, 8, 10, 12) self assemble into sheet-like structure and form various lyotropic cubic, hexagonal and lamellar liquid crystal phases in ternary trisiloxane surfactant - silicone oil - water systems. Small angle X-ray scattering (SAXS) was used to identify and characterize the liquid crystal phases. Cyclic octamethylcyclotetrasiloxane (D4), decamethyl-cyclopentasiloxane(D5) and short linear decamethyltetrasiloxane (MD2M) silicone oils facilitate the formation of liquid crystals. The structures in liquid crystals (LC) progress from zero curvature lamellar liquid crystals to higher curvature cubic liquid crystals with increasing the surfactant hydrophilic head group size. The effects of surfactant and oil concentration on the lamellar bilayer thickness and molecular packing were studied with small angle X-ray scattering.
... Experimental Section. ... for the contact angle measurement and the spreading experiments wer... more ... Experimental Section. ... for the contact angle measurement and the spreading experiments were introduced with a precision micrometer syringe (Model no. ... into the role of substrate surface energy, they generally support the conclusions based on previous studies using Parafilm ...
A technique has been developed for accurately inferring pressure in the diamond anvil cell in the... more A technique has been developed for accurately inferring pressure in the diamond anvil cell in the relatively low pressure range of 0 to 6 kbar. The method is directly applicable to dilute solution studies using hydrocarbon solvents. A procedure is described for using the method with more concentrated solutions and with moderately polar organic solvents. The frequency shift of anthracene absorbance in five hydrocarbon solvents has been measured in the 0 to 2 kbar range and extended to 6 kbar. Pressures in this range were measured in the diamond anvil cell as a function of applied load. Results indicated serious difficulties in correlating pressure and applied load. A pronounced hysteresis was also observed.
Polyethylene trisiloxane surfactants M(D′En)M (n=6, 8, 10, 12) self assemble into sheet-like stru... more Polyethylene trisiloxane surfactants M(D′En)M (n=6, 8, 10, 12) self assemble into sheet-like structure and form various lyotropic cubic, hexagonal and lamellar liquid crystal phases in ternary trisiloxane surfactant - silicone oil - water systems. Small angle X-ray scattering (SAXS) was used to identify and characterize the liquid crystal phases. Cyclic octamethylcyclotetrasiloxane (D4), decamethyl-cyclopentasiloxane(D5) and short linear decamethyltetrasiloxane (MD2M) silicone oils facilitate the formation of liquid crystals. The structures in liquid crystals (LC) progress from zero curvature lamellar liquid crystals to higher curvature cubic liquid crystals with increasing the surfactant hydrophilic head group size. The effects of surfactant and oil concentration on the lamellar bilayer thickness and molecular packing were studied with small angle X-ray scattering.
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