Afzulpurkar
Nitin Afzulpurkar, Klong Luan TH
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20140202868 | SYSTEM AND METHOD OF ANODIZED ALUMINUM OXIDE NANO-POROUS MEMBRANE PREPARATION - A system and method for preparation of nano-porous membrane using anodized aluminium oxide and the membrane/film/thin lamina produced thereof. The system comprises a template forming device that comprises of two rolls provided with one or plurality of projections wherein the Al sheet is passed through the said rolls that are rotatable in opposite direction with respect to each other wherein in operation as the Al sheet is passed through the said rolls, the said projections of the rolls punch depressions to the predetermined depth in the said sheet wherein the depth of the depression is governed by the height of the projections. A method for preparation of anodized aluminum oxide nano-porous membrane comprising electro polishing of Al substrate; first step anodization; chemical etching of alumina; second stage anodization; etching Al for separation of alumina and barrier layer removal or voltage pulse detachment for barrier layer removal and detachment of membrane from Al substrate. | 07-24-2014 |
Nitin Afzulpurkar, Klong Neung TH
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20140202950 | ANODIZED ALUMINUM OXIDE TUBULAR NANO-POROUS MEMBRANE MODULE AND METHOD OF MANUFACTURE THEREOF - The present invention relates to an anodized aluminum oxide tubular nano-porous membrane array module and method of manufacture thereof. Further the invention relates to a system of such modules. The tubular membrane modules of the present invention can be cascaded to up-scale the surface area of the overall system rather than scaling the surface area of a single tubular membrane. Thus the volume density that is the available surface area for filtration per unit volume of the system is substantially enhanced without compromising on mechanical stability to withstand the pressure differential defines by the end use application. | 07-24-2014 |
20140272280 | ANODIZED ALUMINUM OXIDE NANOPOROUS MEMBRANE INTEGRATED WITH MICRO-CHANNEL AND METHOD OF FORMATION THEREOF - The present invention relates to an Anodized Aluminum Oxide nanoporous membrane integrated with micro channel and method of formation thereof. The invention further relates to formation of AAO pillars that are integrated in the membrane to create micro-channels to enhance mechanical stability and substantially reduce membrane thickness to nanometer range. This intrinsic configuration results in obviating the use of any external added material or support. The integrated membrane comprises of a substrate, plurality of alumina micro pillars that form respective micro-channels wherein the said pillars are attached with the substrate, nanoporous structure integrated with the pillars wherein the micro channel is formed between two consecutive pillars bound by the nanoporous structure surface and the substrate surface. | 09-18-2014 |
Nitin Afzulpurkar, Klong Neung, Klong Luang, Pathumthani TH
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20140202952 | MULTILAYER ANODIZED ALUMINIUM OXIDE NANO-POROUS MEMBRANE AND METHOD OF MANUFACTURE THEREOF - The present invention relates to a method of producing multilayer anodized aluminium oxide nano-porous membrane and the membrane produced thereof. Further the invention relates to the nano-porous multi-layer membrane for filtration application. The three layered membrane of the present invention avoids sticking of solute components on the surface obviating the problem of coagulation. This membrane imparts anti coagulation capability wherein in-spite of sticking of the solute component on the surface of the membrane appropriate passage is still available for liquid/small solutes to pass beneath the said stuck solute component to enhance effective surface area for filtration obviating the problem associated with coagulation. | 07-24-2014 |
20140332392 | ANODIZED ALUMINUM OXIDE TEMPLATE ENABLED NANOSTRUCTURE FORMATION AND METHOD THEREOF - The present invention relates to an anodized aluminum oxide template that is used to grow periodic nanostructure and method of fabrication of the said template. The invention further relates to the fabrication of the respective periodic nanostructures from diverse materials using hydrothermal and/or CVD method for growing the said nanostructure. The AAO template enabled nanostructure comprises of a substrate disposed on the top of the AAO template; seed/s disposed in the nano-channels/nanopores of the AAO; nanostructures that are grown from respective nano-channels to form substantially uniform distribution/near periodic structure. | 11-13-2014 |