Chemistry: electrical and wave energy – Processes and products – Electrophoresis or electro-osmosis processes and electrolyte...
Patent
1997-11-05
1999-12-21
Phasge, Arun S.
Chemistry: electrical and wave energy
Processes and products
Electrophoresis or electro-osmosis processes and electrolyte...
B01D 5702
Patent
active
060044446
ABSTRACT:
A process directed to preparing surfactant-polycrystalline inorganic nanostructured materials having designed microscopic patterns. The process includes forming a polycrystalline inorganic substrate having a flat surface and placing in contact with the flat surface of the substrate a surface having a predetermined microscopic pattern. An acidified aqueous reacting solution is then placed in contact with an edge of the surface having the predetermined microscopic pattern. The solution wicks into the microscopic pattern by capillary action. The reacting solution has an effective amount of a silica source and an effective amount of a surfactant to produce a mesoscopic silica film upon contact of the reacting solution with the flat surface of the polycrystalline inorganic substrate and absorption of the surfactant into the surface. Subsequently an electric field is applied tangentially directed to the surface within the microscopic pattern. The electric field is sufficient to cause electro-osmotic fluid motion and enhanced rates of fossilization by localized Joule heating.
REFERENCES:
Aksay et al., Biomimetic Pathways for Assembling Inorganic Thin Films, Science, vol. 273, Aug. 16, 1996, pp. 892-898.
Bunker, et al. Ceramic Thin-Film Formation on Functionalized Interfaces Through Biomimetic Processing, Science, vol. 264, Apr. 1, 1994, pp. 48-55.
Collins, et al., Low temperature deposition of patterned TiO.sub.2 thin films using photopatterned self-assembled monolayers, Appl. Phys. Lett. 69(6), Aug. 5, 1996, pp. 860-862.
DeGuire, et al., Deposition of oxide thin films on silicon using organic self-assembled monolayers, SPIE vol. 2686, pp. 88-99.
Kim, et al., Polymer microstructures formed by moulding in capillaries, Nature vol. 376, Aug. 17, 1995, pp. 581-584.
Kumar, et al, Features of gold having micrometer to centimeter dimensions can be formed through a combination of stamping with an elastomeric stamp and an alkanethiol "ink" followed by chemical etching, Appl. Phys. Lett. 63(14) Oct. 4, 1993, pp. 2002-2004.
Kumar, et al., Patterning Self-Assembled Monolayers: Applications in Materials Science, Langmuir 1994, pp. 1498-1511 no month.
Stephen Mann, Molecular recognition in biomineralization, Nature, vol. 332, Mar. 10, 1988, pp. 119-124.
Manne, et al., Direct Visualization of Surfactant Hemimicelles by Force Microscopy of the Electrical Double Layer, Langmuir 1994, pp. 4409-4413 no month.
Manne, et al., Molecular Organization of Surfactants at Solid-Liquid Interfaces, Science, vol. 270, Dec. 1, 1995, pp. 1480-1482.
Rieke, et al., Spatially Resolved Mineral Deposition on Patterned Self-Assembled Monolayers, Langmuir, 1994, pp. 619-622 no month.
Tarasevich, et al., Nucleation and Growth of Oriented Ceramic Films onto Organic Interfaces, Chem. Mater., 1996, 8, pp. 292-300 no month.
Aksay Ilhan A.
Honma Itaru
Manne Srinivas
Trau Mathias
Whitesides George
Phasge Arun S,.
The Trustees of Princeton University
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