Abstract:
Modified diamond particles for use in chromatography with a desired functional group at the diamond surface, formed from reaction of hydroxyl groups at diamond surfaces with a reactive molecule.
Abstract:
In an embodiment, a method for manufacturing a chromatography apparatus such as a thin layer chromatography (“TLC”) plate is disclosed. The method includes forming a layer of elongated nanostructures (e.g., carbon nanotubes), and at least partially coating the oxidized elongated nanostructures with a coating. The coating includes a stationary phase and/or precursor of a stationary phase and at least one photoluminescent material for use in chromatography. Embodiments for TLC plates and related methods are also disclosed.
Abstract:
In an embodiment, a method for manufacturing a thin layer chromatography (“TLC”) plate is disclosed. The method includes forming a layer of elongated nanostructures (e.g., carbon nanotubes), priming the elongated nanostructures with one or more adhesion priming layers, and at least partially coating the elongated nanostructures with a coating. The coating includes a stationary phase and/or precursor of a stationary phase for use in chromatography. The stationary phase may be functionalized with hydroxyl groups by exposure to a base or acid. The stationary phase may further be treated with a silane (e.g., an amino silane) to improve the performance of the TLC plate. Embodiments for TLC plates and related methods are also disclosed.
Abstract:
In an embodiment, a porous composite particulate material includes a plurality of composite particles. Each composite particle includes an acid-base-resistant core particle at least partially surrounded by one or more layers of acid-base-resistant shell particles. The shell particles are adhered to the core particle by a polymeric layer. The shell particles and/or core particles may be made from an acid-base-resistant material that is stable in harsh chemical conditions. For example, the shell particles and/or core particles may be made from diamond, graphitic carbon, silicon carbide, boron nitride, tungsten carbide, niobium carbide, zirconia, noble metals, acid-base stable highly cross-linked polymers, acid-base stable at least partially cross-linked polymers, titania, alumina, thoria combinations of the foregoing, or other acid-base-resistant materials. The porous composite particulate materials disclosed herein and related methods and devices may be used in separation technologies, including, but not limited to, chromatography and solid phase extraction.
Abstract:
In an embodiment, a porous composite particulate material includes a plurality of composite particles. Each composite particle includes an acid-base-resistant core particle at least partially surrounded by one or more layers of acid-base-resistant shell particles. The shell particles are adhered to the core particle by a polymeric layer. The shell particles and/or core particles may be made from an acid-base-resistant material that is stable in harsh chemical conditions. For example, the shell particles may be made from diamond, graphitic carbon, silicon carbide, boron nitride, tungsten carbide, niobium carbide, zirconia, noble metals, combinations of the foregoing, or other acid-base-resistant materials and the core particle may include at least one exterior layer of non-diamond carbon. The porous composite particulate materials disclosed herein and related methods and devices may be used in separation technologies, including, but not limited to, chromatography and solid phase extraction.
Abstract:
In an embodiment, a method for manufacturing a thin layer chromatography (“TLC”) plate is disclosed. The method includes forming a layer of elongated nanostructures (e.g., carbon nanotubes), and at least partially coating the elongated nanostructures with a coating including silicon nitride. At least a portion of the elongated nanostructures may be removed after being coated. The silicon nitride of the coating may be at least partially oxidized to form silicon dioxide.
Abstract:
In one or more embodiments, a porous composite particulate material includes a plurality of composite particles including an acid-base-resistant core particle at least partially surrounded by one or more layers of acid-base-resistant shell particles. The shell particles are adhered to the core particle by a polymeric material. The shell particles and/or core particles may be made from an acid-base-resistant material that is stable in harsh chemical conditions. During application of the polymeric material/shell particle bilayer, the core particles are sonicated to homogenize the particle size distribution and minimize agglomeration of particles. Multiple bilayers of polymer/shell particles may be applied. In one embodiment, the core particle comprises generally spherical glassy carbon, while the shell particles may comprise nano-sized diamond particles. Other acid-base-resistant materials may be employed. The porous composite particulate materials may be used in separation technologies, including, but not limited to, chromatography and solid phase extraction.
Abstract:
In one or more embodiments, a porous composite particulate material includes a plurality of composite particles including an acid-base-resistant core particle at least partially surrounded by one or more layers of acid-base-resistant shell particles. The shell particles are adhered to the core particle by a polymeric material. The shell particles and/or core particles may be made from an acid-base-resistant material that is stable in harsh chemical conditions. During application of the polymeric material/shell particle bilayer, the core particles are sonicated to homogenize the particle size distribution and minimize agglomeration of particles. Multiple bilayers of polymer/shell particles may be applied. In one embodiment, the core particle comprises generally spherical glassy carbon, while the shell particles may comprise nano-sized diamond particles. Other acid-base-resistant materials may be employed. The porous composite particulate materials may be used in separation technologies, including, but not limited to, chromatography and solid phase extraction.
Abstract:
In an embodiment, a method for manufacturing a thin layer chromatography (“TLC”) plate is disclosed. The method includes forming a layer of elongated nanostructures (e.g., carbon nanotubes), and at least partially coating the elongated nanostructures with a coating. The coating includes a stationary phase and/or precursor of a stationary phase for use in chromatography. At least a portion of the elongated nanostructures may be removed after being coated. Embodiments for TLC plates and related methods are also disclosed.
Abstract:
A permanent solid state memory device is disclosed. Recording data in the permanent solid state memory device forms voids in a data layer between a first wire array and a second wire array. Wires of the first wire array extend transversely to wires in the second wire array. The material is made of a carbon allotrope such that when current is passed through the carbon allotrope, the carbon is quickly oxidized (burned) leaving a complete gap (void) where the fuse once was. One of the advantages of this method is that the fuse material is fully oxidized in the particular “neck region of the bowtie”, such that there is no material left over from which dendrites can grow. In other embodiments, the data layer is a metal or metal oxide selected from the following metals: Tungsten (W), Rhenium (Rh), Osmium (Os), Iridium (Ir), Molybdenum (Mo), Ruthenium (Ru), Rhodium (Rh), Chromium (Cr), and Manganese (Mn).