Applied Nanostructured Solutions, LLC

Lockheed Martin Corporation

John J Morber

Tushar K Shah

Han Liu

John Ditri

William Kalms

David Velasco

Matthew M Kapelanczyk

Kristopher Thomas Heick

Jess Michael Goldfinger

Christina M Gallo

Robert Asbell

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.

Three-dimensional printing using carbon nanostructures

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.

Methods for processing three-dimensional printed objects using microwave radiation

Carbon nanostructures can be formed into polymer composites that are electrically conductive and highly reflective of microwave radiation, thereby facilitating transmission of the microwave radiation. Microwave transmission assemblies containing carbon nanostructures can include an elongate structure containing elongate opposing surfaces that extend the length of the elongate structure and that are spaced apart from one another with a channel region defined in between. The elongate opposing surfaces include a polymer composite containing a polymer matrix and a plurality of carbon nanostructures. Each carbon nanostructure can include a plurality of carbon nanotubes that are branched, crosslinked, and share common walls with one another.

Microwave transmission assemblies fabricated from carbon nanostructure polymer composites

A shielded wire includes a carbon nanostructure (CNS)-shielding layer including a CNS material in a matrix material, the CNS-shielding layer being monolithic and disposed about a dielectric layer and a conducting wire, wherein the dielectric layer is disposed between the CNS-shielding layer and the conducting wire. An extruded thermoplastic jacket includes a CNS material, the extruded thermoplastic jacket being configured to protect at least one wire. A thermoplastic article includes a CNS-infused fiber material and a flexible thermoplastic.

CNS-shielded wires

Carbon nanostructures can convey enhanced electrical conductivity to various substrates, while maintaining a high surface area and low density per unit area. Such substrates can provide good shielding against electromagnetic radiation over a wide range of frequencies. Electrically conductive structures can include a support layer containing a plurality of fibers having apertures defined between the fibers, and a plurality of carbon nanostructures at least partially conformally coating the fibers and bridging across the apertures defined between adjacent fibers to form a continuous carbon nanostructure layer. Each carbon nanostructure can include a plurality of carbon nanotubes that are branched, crosslinked, and share common walls with one another.

Carbon nanostructure-coated fibers of low areal weight and methods for producing the same

A receiver used in a solar collection assembly includes a tube adapted to carry a heat transfer medium therethrough. An envelope surrounds the tube and has opposed ends and a diaphragm is interposed between each end and the tube to support the tube from the envelope. The diaphragm comprises radially oriented convolutions which minimizes the axial length of the diaphragm and hence reduces shading of the absorber tube.

Solar receiver diaphragm

A switching power supply transmits power between a single front end including electromagnetic interference filtering and power factor correction circuits to an output end at a high voltage and high frequency from which any desired DC voltage or waveform may be readily and directly derived with high efficiency in order to reduce size and weight of components including transformers at the output end and allow greater variety of connection wiring of reduced weight and volume to be used. The high frequency is limited at the low frequency end by the frequency at which significant power can be transferred through, for example, a ferrite core or other transformer of sufficiently low volume to accommodate closely spaced loads or power converters and at the high frequency end by the wavelength in the connection wiring such that 1/10 wavelength is greater than one thousand feet. Branches of the power distribution system which are not desired to be in use can be operated at zero power and be brought back on line within milliseconds, when needed. Power distribution among respective branches of the power distribution system can be controlled by varying the high frequency of power transmission and appropriate filtering.

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Taneytown, MD, United States of America

John J Morber