Samsung Electronics Co., Ltd.

Desktop Metal, Inc.

Cabot Corporation

Qd Vision, Inc.

Samsung Research America, Inc.

Robert J Nick

Jamison Go

Jonah Samuel Myerberg

Michael Goldblatt

John R Linton

Daniel David Sachs

Zoran D Popovic

James A Belmont

Peter T Kazlas

Jonathan S Steckel

Feng Gu

Matthew Stevenson

Sridhar Sadasivan

Michael Daniel Santorella

John Spencer Morris

Joseph Gabay

Whitney Miller

Matthew McCambridge

Emanuel Michael Sachs

Craig Allen Breen

Elizabeth G Burns

Alexander Legendre

Eugene N Step

Tianqi Liu

Suchit Shah

Christopher Benjamin Renner

Dave S Pope

Ilya L Rushkin

Sze-Ming Lee

Sarah A Mandeville

David R Gildea

Techniques are described for fabricating sinterable metallic parts by coating a metal powder with a first material, and by depositing a binder composition onto the metal powder that contains a second material, then causing the first and second materials to react to form a polymer. The first and second materials may be selected so that they combine to produce a desired polymer. The binder composition may be deposited using conventional binder jetting techniques.

Polymer-synthesizing binder compositions for additive fabrication and related methods and compositions

Techniques for depowdering in additive fabrication are provided. According to some aspects, techniques are provided that separate powder from additively fabricated parts through liquid immersion of the parts. Motion of the liquid, such as liquid currents, may dislodge or otherwise move powder away from additively fabricated parts to which it is adhered or otherwise proximate to. The liquid may also provide a vehicle to carry away powder from the additively fabricated parts. Removed powder may be filtered or otherwise separated from the liquid to allow recirculation of the liquid to the parts and/or to enable re-use of the powder in subsequent additive fabrication processes. Techniques for depowdering through liquid immersion may be automated, thereby mitigating challenges associated with manual depowdering operations.

Techniques for depowdering additively fabricated parts through fluid immersion and related systems and methods

Techniques for depowdering in additive fabrication are provided. According to some aspects, techniques are provided that separate powder from parts by directing gas onto, or near to, the powder. While fragile green parts, such as green parts produced by binder jetting, may be fragile with respect to scraping or impacts, such parts may nonetheless be resistance to damage from directed gas, even if directed at a high pressure. Techniques for depowdering through directed application of gas may be automated, thereby mitigating challenges associated with manual depowdering operations.

Techniques for depowdering additively fabricated parts via gas flow and related systems and methods

Methods of additive manufacturing, binder compositions for additive manufacturing, and articles produced by and/or associated with methods of additive manufacturing are generally described.

Binder composition for additive manufacturing

A pre-polymer formulation comprising quantum dots and a precursor for a polymer having a free volume parameter V/&#x3b3; with a value less than or equal to 0.03 cm/g is disclosed. A pre-polymer formulation comprising quantum dots and a cyclohexylacrylate monomer is further disclosed. Also disclosed are a quantum dot composition including quantum dots dispersed in a polymer matrix, the quantum dot composition being prepared from a pre-polymer formulation comprising quantum dots and a precursor for a polymer having a free volume parameter V/&#x3b3; with a value less than or equal to cm/g; a method; and other products including a quantum dot composition described herein.

Quantum dot-containing materials and products including same cross reference to related applications

According to some aspects, a de-powdering subsystem for an additive fabrication system is described. The de-powdering subsystem may comprise a bath subsystem. The bath subsystem may comprise a reservoir configured to contain a liquid and to accept objects to be de-powdered into the liquid, and an agitation facility configured to cause currents within the liquid. The agitator facility may be at least one of (i) a pump configured to circulate the liquid within the reservoir, (ii) a heating element configured to generate convection currents in the liquid, and (iii) a stirrer driven through a linkage to a motor. The bath subsystem may comprise at least one ultrasonic transducer configured to apply ultrasonic vibrations to the liquid within the reservoir.

Automated de-powdering via liquid immersion

A pre-polymer formulation comprising quantum dots and a precursor for a polymer having a free volume parameter Vwith a value less than or equal to 0.03 cm/g is disclosed. A pre-polymer formulation comprising quantum dots and a cyclohexylacrylate monomer is further disclosed. Also disclosed are a quantum dot composition including quantum dots dispersed in a polymer matrix, the quantum dot composition being prepared from a pre-polymer formulation comprising quantum dots and a precursor for a polymer having a free volume parameter Vwith a value less than or equal to cm/g; a method; and other products including a quantum dot composition described herein.

Quantum dot-containing materials and products including same

A luminescent particle including a surface comprising glass that surrounds one or more particles of one or more light emissive materials is disclosed. Preferably the surface comprises a vitrified glass. Methods form making a luminescent particle including a surface comprising glass that surrounds one or more particles of one or more light emissive materials is also disclosed. Compositions and products including a luminescent particle are further disclosed.

Luminescent particle, materials and products including same, and methods

A method of making a device comprises forming a layer comprising quantum dots over a substrate including a first electrode, fixing the layer comprising quantum dots formed over the substrate, and exposing at least a portion of, and preferably all, exposed surfaces of the fixed layer comprising quantum dots to small molecules. The layer comprising quantum dots can be preferably fixed in the absence or substantial absence of oxygen. Also disclosed is a method of making a device comprises forming a layer comprising quantum dots over a substrate including a first electrode, exposing the layer comprising quantum dots to small molecules and light flux. Also disclosed is a method of making a film including a layer comprising quantum dots, the method comprising forming a layer comprising quantum dots over a carrier substrate, fixing the layer comprising quantum dots formed over the carrier substrate, and exposing at least a portion of, and preferably all, exposed surfaces of the fixed layer comprising quantum dots to small molecules. The layer comprising quantum dots can be preferably fixed in the absence or substantial absence of oxygen. Also disclosed is a method of preparing a device component including a layer comprising quantum dots, the method comprising forming a layer comprising quantum dots over a layer comprising a charge transport material, exposing the layer comprising quantum dots to small molecules and light flux. Devices, device components, and films are also disclosed.

Device including quantum dots

A glass tube including quantum dots in a polymerized matrix is described. An optical component and other products including such glass tube, a composition including quantum dots, and methods are also disclosed.

Stress-resistant component for use with quantum dots

A hermetically sealed optical component includes an optical material including an optical material comprising quantum dots sealed between glass substrates by a hermetic seal including a liquid crystalline polymer.

Methods for making optical components, optical components, and products including same

The present invention relates to a modified colorant comprising a colorant having at least one polymer attached or adsorbed thereto. The polymer comprises at least one functional group, and various embodiments of the functional group are disclosed. For each of these embodiments, preferably the functional group has a defined calcium index value. Also disclosed are various uses for these modified colorants, including inkjet ink compositions. Thus, the present invention further relates to an inkjet ink composition comprising a) a liquid vehicle, b) at least one colorant, and c) at least one polymer comprising at least one functional group as described herein.

Modified colorants and inkjet ink compositions comprising modified colorants

The present invention relates to a formulation comprising a medium, one or more stabilizers, and one or more particles comprising nanoparticles included within a host material. In certain embodiments, a stabilizer comprises a HALS stabilizer. In certain embodiments, a stabilizer comprises a UVA stabilizer. In certain embodiments, the formulation includes a HALS stabilizer and a UVA stabilizer. In certain embodiments, nanoparticles have light-emissive properties. Other embodiments relate to a powder obtainable from a formulation of the invention, a composition including a powder of the invention, a coating comprising a formulation of the invention, and products and applications including a particle of the invention. In preferred embodiments, a nanoparticle comprises a semiconductor nanocrystal. In certain embodiments, a host material comprises a polymer. In certain embodiments, a host material comprises an inorganic material. A raw batch formulation and particle obtainable therefrom is also disclosed.

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Pepperell, MA, United States of America

Robert J Nick