Ut-battelle, Inc.

University of Tennessee Research Foundation

Applicote, LLC

Chad Edward Duty

Lonnie J Love

Ilia N Ivanov

Vlastimil Kunc

Tommy Joe Phelps

Matthew M Mench

Matthew A Young

Gerald Earle Jellison, Jr

Robert J Lauf

Adam Justin Rondinone

Pooran Chandra Joshi

Ji-Won Moon

Orlando Rios

Craig A Blue

John M Lindahl

Seokpum Kim

Ronald D Ott

Ji Won Moon

David C Harper

Jordan A Failla

Andrew Stephen Madden

Yiliang Li

Claudia Jeanette Rawn

Nathaniel R Quick

Amit Kumar Naskar

Beth Louise Armstrong

Michael Z Hu

Ahmed A Hassen

William H Peter

Alexander Johs

Joseph A Angelini

Andrew A Wereszczak

Sean Campbell Smith

Chad M Parish

Steven Walker

Art Clemens

John D Rivard

Hyunsung Jung

Christopher S Murray

Tyler C H Smith

Susan L Murray

Andre R Klein

Jongsu Kim

Jehong Park

Charlee J C Bennett

Quanqin Dai

An apparatus and device for creating a vertical strengthening feature within a 3D printed article of manufacture for improving mechanical performance in the Z-direction. Fill material is deposited in voids vertically crossing multiple layers during the build of 3D printing. The device includes a penetrating extension that fits within the void to create a vertical strengthening feature via heat and/or extruded fill material. The size and/or movement of the heated extension can impact the void side walls to reflow the build material and blend the layers together within the void side walls.

Penetrating and actuating nozzle for extrusion-based 3D printing

A structural health monitoring method is provided that utilizes self-sensing printed polymer structures. The method is based on resistivity properties of conductive materials, which can be integrated to a 3D printed polymer structure during additive manufacturing. An article to be monitored has at least one 3D printed polymer structure including a circuit comprising at least one conductive pathway extending through a non-conductive material. The resistance across the circuit is measured during or after loading of the article to determine a resistance value. The measured resistance value is compared to a known resistance value, and based on the comparison, a defect can be detected in the 3D printed polymer structure. Structural health monitoring systems and articles with integrated structural health monitoring are also provided.

Self-sensing of printed polymer structures

Methods, apparatuses and systems for detecting tampering are disclosed. The methods, apparatuses and systems for detecting tampering can involve positioning at least a portion of one or more ingress/egress line having a first end and a second end in a clamping box configured to provide detection of tampering; and detecting tampering by observing the clamping box.

Apparatuses, systems, and methods for detection of tampering

A method for producing a polymer composite fiber comprised of a polymer matrix with filaments incorporated therein whose lengthwise dimensions are substantially oriented with the axial dimension of the composite fiber, the method comprising subjecting a melt comprised of a polymer matrix and filaments to an extrusion process in which the melt is extruded into a fibrous form in the absence of screw extruders and in the substantial absence of shear forces that result in breakage of the filaments, followed by cooling and solidification of the extruded melt to provide the polymer composite fiber. Integration of these polymer composite fibers with additive manufacturing technologies, particularly rapid prototyping methods, such as FFF and 3D printing, are also described. The resulting polymer composite fibers and articles made thereof are also described.

Low shear process for producing polymer composite fibers

A method and apparatus for additive manufacturing that includes a nozzle and/or barrel for extruding a plastic material and a supply of polymeric working material provided to the nozzle, wherein the polymeric working material is magnetically susceptible and/or electrically conductive. A magneto-dynamic heater is provided for producing a time varying, high flux, frequency sweeping, alternating magnetic field in the vicinity of the nozzle to penetrate into and couple the working material to heat the material through at least one of an induced transient magnetic domain and an induced, annular current.

Rapid non-contact energy transfer for additive manufacturing driven high intensity electromagnetic fields

Tampering detection clamping box for ingress and egress lines

The invention is directed to a method for producing metal-containing particles, the method comprising subjecting an aqueous solution comprising a metal salt, E, lowering reducing agent, pH adjusting agent, and water to conditions that maintain the Evalue of the solution within the bounds of an E-pH stability field corresponding to the composition of the metal-containing particles to be produced, and producing said metal-containing particles in said aqueous solution at a selected Evalue within the bounds of said E-pH stability field. The invention is also directed to the resulting metal-containing particles as well as devices in which they are incorporated.

Controllable reductive method for synthesizing metal-containing particles

A method of forming a metal gallate spinel structure that includes mixing a divalent metal-containing salt and a gallium-containing salt in solution with fermentative or thermophilic bacteria. In the process, the bacteria nucleate metal gallate spinel nano-objects from the divalent metal-containing salt and the gallium-containing salt without requiring reduction of a metal in the solution. The metal gallate spinel structures, as well as light-emitting structures in which they are incorporated, are also described.

Method of microbially producing metal gallate spinel nano-objects, and compositions produced thereby

The invention is directed to a method for producing non-oxide semiconductor nanoparticles, the method comprising: (a) subjecting a combination of reaction components to conditions conducive to microbially-mediated formation of non-oxide semiconductor nanoparticles, wherein said combination of reaction components comprises i) anaerobic microbes, ii) a culture medium suitable for sustaining said anaerobic microbes, iii) a metal component comprising at least one type of metal ion, iv) a non-metal component comprising at least one non-metal selected from the group consisting of S, Se, Te, and As, and v) one or more electron donors that provide donatable electrons to said anaerobic microbes during consumption of the electron donor by said anaerobic microbes; and (b) isolating said non-oxide semiconductor nanoparticles, which contain at least one of said metal ions and at least one of said non-metals. The invention is also directed to non-oxide semiconductor nanoparticle compositions produced as above and having distinctive properties.

Microbially-mediated method for synthesis of non-oxide semiconductor nanoparticles

Methods and compositions for additive manufacturing that include reactive or thermosetting polymers, such as urethanes and epoxies. The polymers are melted, partially cross-linked prior to the depositing, deposited to form a component object, solidified, and fully cross-linked. These polymers form networks of chemical bonds that span the deposited layers. Application of a directional electromagnetic field can be applied to aromatic polymers after deposition to align the polymers for improved bonding between the deposited layers.

Reactive polymer fused deposition manufacturing

A method for producing a film, the method comprising melting a layer of precursor particles on a substrate until at least a portion of the melted particles are planarized and merged to produce the film. The invention is also directed to a method for producing a photovoltaic film, the method comprising depositing particles having a photovoltaic or other property onto a substrate, and affixing the particles to the substrate, wherein the particles may or may not be subsequently melted. Also described herein are films produced by these methods, methods for producing a patterned film on a substrate, and methods for producing a multilayer structure.

Methods for producing complex films, and films produced thereby

A method is disclosed for processing an insulator material or a semiconductor material. The method includes pulsing a plasma lamp onto the material to diffuse a doping substance into the material, to activate the doping substance in the material or to metallize a large area region of the material. The method may further include pulsing a laser onto a selected region of the material to diffuse a doping substance into the material, to activate the doping substance in the material or to metallize a selected region of the material.

Processing of insulators and semiconductors

High intensity plasma-arc heat sources, such as a plasma-arc lamp, are used to irradiate glass, glass ceramics and/or ceramic materials to strengthen the glass. The same high intensity plasma-arc heat source may also be used to form a permanent pattern on the glass surface&#x2014;the pattern being raised above the glass surface and integral with the glass (formed of the same material) by use of, for example, a screen-printed ink composition having been irradiated by the heat source.

Glass strengthening and patterning methods

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Knoxville, TN, United States of America

Chad Edward Duty