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Применить Всего найдено 11. Отображено 8.
21-03-2013 дата публикации

Electrospun cactus mucilage nanofibers

Номер: US20130068692A1
Автор: Norma A. Alcantar, Sylvia W. Thomas, Yanay Pais
Принадлежит: UNIVERSITY OF SOUTH FLORIDA

Novel electrospun nanofibers and nanofibrous membranes, methods of manufacturing the same, and methods of using the same are provided. The nanofibers include a cactus mucilage, such as mucilage from Opuntia ficus-indica . An organic polymer can be added to the cactus mucilage before electrospinning The nanofibrous membranes can be used in water filtration.

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Номер записи: 1
08-05-2014 дата публикации

Microstructured crystalline device in confined space, a dye-sensitized solar cell, and method of preparation thereof

Номер: US20140124021A1
Автор: Arash Takshi, ASHOK KUMAR, Garrett Matthews, Jing Wang, Manoj Kumar Ram, Mikhail Ladanov, Paula C. Algarin Amaris, Sylvia W. Thomas
Принадлежит: UNIVERSITY OF SOUTH FLORIDA

A method of forming an ordered nanorods array in a confined space is used to form a high surface area device where an ensemble of parallel trenches has micrometer dimensions for the width and depth of the trenches, which are decorated with crystalline nanowires radiating from the sidewalls and bases of the trenches. The high surface area device is formed by depositing a conformal crystalline seed coating in the trenches, forming microchannels from these trenches by placing a barrier layer on the open surface of the trenches, contacting the conformal coating with a crystal precursor solution that is caused to flow through the microchannels. In an embodiment, a very high surface area electrode is constructed with ZnO nanowires radiating from the sidewalls and base of trenches formed on a silicon substrate. The device can be a dye-sensitized solar cell.

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Номер записи: 2
08-06-2017 дата публикации

ELECTROSPUN CACTUS MUCILAGE NANOFIBERS

Номер: US20170157571A1
Автор: Alcantar Norma A., Pais Yanay, Thomas Sylvia W.
Принадлежит: UNIVERSITY OF SOUTH FLORIDA

Novel electrospun nanofibers and nanofibrous membranes, methods of manufacturing the same, and methods of using the same are provided. The nanofibers include a cactus mucilage, such as mucilage from -. An organic polymer can be added to the cactus mucilage before electrospinning. The nanofibrous membranes can be used in water filtration. 1. A method of producing an electrospun nanofiber , comprising:forming an electrospinning solution comprising a cactus mucilage and an organic polymer; andelectrospinning the electrospinning solution to form the electrospun nanofibril.2. The method according to claim 1 , wherein forming the electrospinning; solution comprises:dissolving the cactus mucilage in a first solvent to form a first solution;dissolving the organic polymer in a second solvent to form a second solution; andcombining the second solution and the first solution to form the electrospinning solution.3Opuntia ficusindica. The method according to claim 1 , wherein the cactus mucilage is -(Ofi) mucilage.4. The method according to claim 3 , wherein the organic polymer is polyvinyl alcohol (PVA).5. The method according to claim 1 , wherein the organic polymer is PVA claim 1 , chitosan claim 1 , polyethylene glycol (PEG) claim 1 , or poly lactic acid (PLA).6. The method according to claim 2 , wherein the first solvent comprises acetic acid claim 2 , and wherein the second solvent is water.7. The method according to claim 1 , wherein electrospinning; the solution comprises electrospinning the solution in an electric field of from about 1.5×10V/m to about 3.5×10V/m.8. The method according to claim 2 , wherein the electrospinning solution comprises the organic polymer and the cactus mucilage present in a ratio of either 70:30 or 50:50 (polymer:mucilage).9. The method according to claim 1 , wherein the cactus mucilage has a linear repeating chain of (1→4)-linked β-D-galacturonic acid and an α(1→2)-linked L-rhamnose with trisaccharide side chains of β(1→6)-linked D-galactose ...

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Номер записи: 3
01-12-2016 дата публикации

Microstructured Crystalline Device In Confined Space, A Dye-Sensitized Solar Cell, and Method of Preparation Thereof

Номер: US20160351341A1
Автор: Arash Takshi, ASHOK KUMAR, Garrett Matthews, Jing Wang, Manoj Kumar Ram, Mikhail Ladanov, Paula C. Algarin Amaris, Sylvia W. Thomas
Принадлежит: UNIVERSITY OF SOUTH FLORIDA

A method of forming an ordered nanorods array in a confined space is used to form a high surface area device where an ensemble of parallel trenches has micrometer dimensions for the width and depth of the trenches, which are decorated with crystalline nanowires radiating from the sidewalls and bases of the trenches. The high surface area device is formed by depositing a conformal crystalline seed coating in the trenches, forming microchannels from these trenches by placing a barrier layer on the open surface of the trenches, contacting the conformal coating with a crystal precursor solution that is caused to flow through the microchannels. In an embodiment, a very high surface area electrode is constructed with ZnO nanowires radiating from the sidewalls and base of trenches formed on a silicon substrate. The device can be a dye-sensitized solar cell.

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Номер записи: 4
31-01-2017 дата публикации

Electrospun cactus mucilage nanofibers

Номер: US9555392B2
Автор: Norma A. Alcantar, Sylvia W. Thomas, Yanay Pais
Принадлежит: UNIVERSITY OF SOUTH FLORIDA

Novel electrospun nanofibers and nanofibrous membranes, methods of manufacturing the same, and methods of using the same are provided. The nanofibers include a cactus mucilage, such as mucilage from Opuntia ficus - indica . An organic polymer can be added to the cactus mucilage before electrospinning. The nanofibrous membranes can be used in water filtration.

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Номер записи: 5
27-06-2017 дата публикации

Microstructured crystalline device in confined space, a dye-sensitized solar cell, and method of preparation thereof

Номер: US09691554B2
Автор: Arash Takshi, ASHOK KUMAR, Garrett Matthews, Jing Wang, Manoj Kumar Ram, Mikhail Ladanov, Paula C. Algarin Amaris, Sylvia W. Thomas
Принадлежит: UNIVERSITY OF SOUTH FLORIDA

A method of forming an ordered nanorods array in a confined space is used to form a high surface area device where an ensemble of parallel trenches has micrometer dimensions for the width and depth of the trenches, which are decorated with crystalline nanowires radiating from the sidewalls and bases of the trenches. The high surface area device is formed by depositing a conformal crystalline seed coating in the trenches, forming microchannels from these trenches by placing a barrier layer on the open surface of the trenches, contacting the conformal coating with a crystal precursor solution that is caused to flow through the microchannels. In an embodiment, a very high surface area electrode is constructed with ZnO nanowires radiating from the sidewalls and base of trenches formed on a silicon substrate. The device can be a dye-sensitized solar cell.

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Номер записи: 6
11-04-2017 дата публикации

Mini notched turbine generator

Номер: US09618002B1
Автор: Henry Cabra, Sylvia W. Thomas
Принадлежит: UNIVERSITY OF SOUTH FLORIDA

The present invention is turbine generator capable of integration into a bio-physiological or microfluidic system. The generator can convert biomechanical energy into electrical energy by using electromagnetic subsystems to transform the kinetic energy to electricity. These systems have the potential to convert hydraulic energy (such as flow of body fluid, blood flow, contraction of blood vessel, dynamic fluid in nature) into electric energy that may be sufficient for self-powering nano/micro devices and systems, such as artificial organs, valves, sensors, micro motors, and micro robots. The system incorporates a new turbine model having, notched blades; a rotor in levitation; and a special casing capable of integration into a bio-physiological or microfluidic system.

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Номер записи: 7
13-09-2016 дата публикации

Microstructured crystalline device in confined space, a dye-sensitized solar cell, and method of preparation thereof

Номер: US09443662B2
Автор: Arash Takshi, ASHOK KUMAR, Garrett Matthews, Jing Wang, Manoj Kumar Ram, Mikhail Ladanov, Paula C. Algarin Amaris, Sylvia W. Thomas
Принадлежит: UNIVERSITY OF SOUTH FLORIDA

A method of forming an ordered nanorods array in a confined space is used to form a high surface area device where an ensemble of parallel trenches has micrometer dimensions for the width and depth of the trenches, which are decorated with crystalline nanowires radiating from the sidewalls and bases of the trenches. The high surface area device is formed by depositing a conformal crystalline seed coating in the trenches, forming microchannels from these trenches by placing a barrier layer on the open surface of the trenches, contacting the conformal coating with a crystal precursor solution that is caused to flow through the microchannels. In an embodiment, a very high surface area electrode is constructed with ZnO nanowires radiating from the sidewalls and base of trenches formed on a silicon substrate. The device can be a dye-sensitized solar cell.

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Номер записи: 8