摘要:
Objects produced by conventional three-dimensional printing methods are often incompletely consolidated and are not easily repaired. Printing compositions to address this issue can include a solidifiable matrix and a microwave absorber dispersed in the solidifiable matrix. The microwave absorber can be a plurality of carbon nanostructures containing a plurality of carbon nanotubes that are branched, crosslinked, and share common walls with one another. Methods for processing a three-dimensional printed object can include: providing a three-dimensional printed object formed from a printing composition containing a solidifiable matrix and a microwave absorber dispersed in the solidifiable matrix, and applying a focused input of microwave radiation to the printed object at one or more locations. Applying the microwave radiation heats the microwave absorber at the one or more locations and promotes consolidation of the printing composition within the printed object.
摘要:
A carbon nanostructure that is free of a growth substrate adhered to the carbon nanostructure can include a plurality of carbon nanotubes that are branched, crosslinked, and share common walls with one another. Carbon nanostructures can be agglomerated with one another and densified to form a carbon nanostructure layer in which at least a portion of the carbon nanotubes in each carbon nanostructure are aligned substantially parallel to one another. Methods for forming a carbon nanostructure layer can include providing a plurality of carbon nanostructures that are free of a growth substrate adhered to each carbon nanostructure, and forming a carbon nanostructure layer by depositing the carbon nanostructures on a surface.
摘要:
Objects produced by conventional three-dimensional printing methods often have limited structural quality. Printing compositions to address this issue can include a solidifiable matrix and a plurality of carbon nanostructures dispersed in the solidifiable matrix. The carbon nanostructures include a plurality of carbon nanotubes that are branched, crosslinked, and share common walls with one another. Three-dimensional printing methods utilizing such printing compositions can include: depositing the printing composition in a layer-by-layer deposition process, and while depositing the printing composition, applying a focused input of microwave radiation in proximity to a location where the printing composition is being deposited. The focused input of microwave radiation heats the carbon nanostructures at the location and promotes consolidation of the printing composition within an object being produced by the layer-by-layer deposition process.
摘要:
Carbon nanostructures can include a plurality of carbon nanotubes that are branched, crosslinked, and share common walls with one another, thereby defining a porous space having a tortuous path within the carbon nanostructures. The porous space can be used for sequestering a range of particulate sizes from various types of substances. Separation membranes can include a separation body having an effective pore size of about 1 micron or less and providing a tortuous path for passage of a substance therethrough. The separation body can include carbon nanostructures.
摘要:
An electrode includes a substrate having a carbon nanostructure (CNS) disposed thereon and a coating including an active material conformally disposed about the carbon nanostructure and the substrate. The electrode is used in a hybrid capacitor-battery having a bifunctional electrolyte capable of energy storage.