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1
US2020190268A1
SYSTEMS, DEVICES, AND METHODS FOR BULK PROCESSING OF HIGHLY-LOADED NANOCOMPOSITES
Publication/Patent Number: US2020190268A1 Publication Date: 2020-06-18 Application Number: 16/712,516 Filing Date: 2019-12-12 Inventor: Rao, Abhinav   Hart anastasios john   Assignee: Massachusetts Institute of Technology   IPC: C08J3/205 Abstract: Methods, systems, and devices for synthesis, mechanics, and direct-write additive manufacturing of cellulose nanocrystal (CNC) composites that exhibit characteristics of high-performance structural materials are provided. The methods, systems, and devices allow for formulation, processing, and bulk fabrication of highly-filled nanocomposites having high hardness and toughness. In some embodiments, a precursor that includes a nanomaterial and one or more monomers is formulated and passed through an extruder to form a physical gel. The physical gel can undergo a dual cure process that includes an initial UV cure and a subsequent thermal cure to crosslink the polymer with the CNC to form the highly-filled nanocomposite. The CNC composite can then be used in the manufacturing process. In some embodiments, the interfacial mechanics and fracture characteristics of the composite can be tuned to improve the mechanical properties of the composite.
2
US2020362236A1
OPTICAL DEVICES FOR EFFICIENT EMISSION AND/OR ABSORPTION OF ELECTROMAGNETIC RADIATION, AND ASSOCIATED SYSTEMS AND METHODS
Publication/Patent Number: US2020362236A1 Publication Date: 2020-11-19 Application Number: 16/464,401 Filing Date: 2017-11-28 Inventor: Cui, Kehang   Hart anastasios john   Assignee: Massachusetts Institute of Technology   IPC: C09K11/68 Abstract: Optical materials and associated systems and methods are generally provided.
3
US10562227B2
Systems, devices, and methods for high-throughput three-dimensional printing
Publication/Patent Number: US10562227B2 Publication Date: 2020-02-18 Application Number: 15/260,813 Filing Date: 2016-09-09 Inventor: Go, Jamison   Hart anastasios john   Assignee: Massachusetts Institute of Technology   IPC: B29C64/209 Abstract: Printing devices and methods are provided that utilize high throughput extrusion to generate a printer material, such as a three-dimensional object. High-throughput extrusion systems as provided volumetrically pre-heat an extruded filament to a desired pre-heat temperature, and then either maintain or heat the extruded filament to a desired melt temperature prior to having the filament extruded out of the system and onto a surface, such as a build platform. By pre-heating the filament prior to heating it to the temperature at which it is excluded, it helps increase the throughput of the system. Likewise, by doing the heating volumetrically, it further helps increase the throughput of the system. Various embodiments of devices and methods typically used for printing in conjunction with the disclosed high throughput systems are also provided.
4
US2020346476A1
APPARATUS AND METHODS FOR CONTACT-PRINTING USING ELECTROSTATIC NANOPOROUS STAMPS
Publication/Patent Number: US2020346476A1 Publication Date: 2020-11-05 Application Number: 16/959,721 Filing Date: 2018-01-05 Inventor: Hart anastasios john   Kim, Sanha   Assignee: Massachusetts Institute of Technology   IPC: B41M1/42 Abstract: Methods and apparatus for contacting printing via electrostatic force. In one example, an apparatus for contact printing using an ink includes a substrate, a conductive layer disposed on the substrate, and a group of microstructures disposed on the conductive layer. Each microstructure includes a group of conductive porous medium extending from the conductive layer. The apparatus also includes a dielectric layer conformally disposed on the microstructures and configured to electrically insulate the microstructures from the ink during use. The conductive layer is configured to apply a voltage on the group of microstructures to facilitate the loading and dispensing of ink.
5
US10814348B2
Discrete deposition of particles
Publication/Patent Number: US10814348B2 Publication Date: 2020-10-27 Application Number: 15/949,040 Filing Date: 2018-04-09 Inventor: Hart anastasios john   Beroz, Justin Douglas   Maghsoodi, Homayoon   Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGY   UNIVERSITY OF MICHIGAN   IPC: B05D1/12 Abstract: A particle can be discretely ejected from a orifice.
6
US10696034B2
Systems, devices, and methods for deposition-based three-dimensional printing
Publication/Patent Number: US10696034B2 Publication Date: 2020-06-30 Application Number: 15/376,416 Filing Date: 2016-12-12 Inventor: Pattinson, Sebastian William   Hart anastasios john   Assignee: Massachusetts Institute of Technology   IPC: B29C64/236 Abstract: Methods, systems, and devices for extrusion-based three-dimensional printing are provided. The methods, systems, and devices allow for the printing materials such as fabrics, clothing, and wearable and/or implantable devices. A number of different enhancements are provided that allow for this improved form of three-dimensional printing, including: (1) printing using a polymer (e.g., cellulose acetate) dissolved in a solvent (e.g., acetone); (2) selectively bonding portions of a deposited filament onto one or more surfaces and/or one or more previously deposited filaments; (3) using particular toolpaths to create a fabric or similar material by creating a woven pattern; and (4) printing across multiple layers even when previous layers are not complete. Other aspects of the present disclosure, including other enhancements and various printer configurations, are also provided.
7
US2020023397A1
DIGITAL PARTICLE EJECTION PRINTING
Publication/Patent Number: US2020023397A1 Publication Date: 2020-01-23 Application Number: 16/212,153 Filing Date: 2018-12-06 Inventor: Hart anastasios john   Beroz, Justin Douglas   Merrow, Henry   Assignee: Massachusetts Institute of Technology   IPC: B05B12/06 Abstract: A particle can be discretely ejected from an orifice in a controlled manner to form a product.
8
US2020131326A1
SYSTEMS, DEVICES, AND METHODS FOR PROMOTING IN SITU POLYMERIZATION WITHIN NANOMATERIAL ASSEMBLIES
Publication/Patent Number: US2020131326A1 Publication Date: 2020-04-30 Application Number: 16/663,313 Filing Date: 2019-10-24 Inventor: Chazot, Cécile A.c.   Hart anastasios john   Assignee: Massachusetts Institute of Technology   IPC: C08J5/24 Abstract: The present disclosure is directed to synthesizing a nanomaterial-polymer composite via in situ interfacial polymerization. A nanomaterial is exposed to a solution having a first solute dissolved in an aqueous solvent to uniformly, or substantially uniformly, distribute the solvent throughout the porosity of the network of the nanomaterial. The nanomaterial is then exposed to a second solution having a second solute dissolved in an organic solvent, which is substantially immiscible with the first solvent, with the first solute reacting with the second solute. The first and second solutions can be stirred, or otherwise moved with respect to each other, to facilitate transport of the second solution throughout the nanomaterial to promote reaction of the polymer within the nanomaterial to produce a polymer composite having uniform morphology.
9
US2020016820A1
ADDITIVE MANUFACTURING VIA OPTICAL APERTURE DIVISION MULTIPLEXING
Publication/Patent Number: US2020016820A1 Publication Date: 2020-01-16 Application Number: 16/513,700 Filing Date: 2019-07-16 Inventor: Penny, Ryan Wade   Hart anastasios john   Assignee: Massachusetts Institute of Technology   IPC: B29C64/10 Abstract: Systems, devices, and methods for additive manufacturing as disclosed allow for improved optical access to a build platform. In at least some embodiments a multiplexing optic of an additive manufacturing device is configured to multiplex an arbitrary number of optical paths to a build platform along a substantially common optical axis by dividing a theoretical input aperture of the multiplexing optic into a plurality of sub-apertures. Each sub-aperture can independently receive and direct an optical path to the build platform. An optical path can be a light path from a light source or an optical process monitoring path from an optical process monitoring system or optical process monitoring device. In some embodiments, an optical path can enter the multiplexing optic off-axis and/or off-angle with respect to an optical axis of the multiplexing optic. The multiplexing optic can include one or more lens elements and/or one or more mirror elements.
10
US202023397A1
DIGITAL PARTICLE EJECTION PRINTING
Publication/Patent Number: US202023397A1 Publication Date: 2020-01-23 Application Number: 20/181,621 Filing Date: 2018-12-06 Inventor: Merrow, Henry   Beroz, Justin Douglas   Hart anastasios john   Assignee: Massachusetts Institute of Technology   IPC: B05B12/06 Abstract: A particle can be discretely ejected from an orifice in a controlled manner to form a product.
11
US2020298475A1
ADDITIVE FABRICATION OF SINTERABLE METALLIC PARTS VIA APPLICATION OF DIRECTED ENERGY
Publication/Patent Number: US2020298475A1 Publication Date: 2020-09-24 Application Number: 16/824,987 Filing Date: 2020-03-20 Inventor: Myerberg, Jonah Samuel   Hart anastasios john   Assignee: Desktop Metal, Inc.   IPC: B29C64/153 Abstract: According to some aspects, techniques are provided for fabricating sinterable metallic parts through the application of directed energy to a build material. In particular, applying energy to a build material comprising a polymer mixed with a metal powder may cause the polymer to form a cohesive structure with the metal powder. As a result, the polymer acts as a “glue” to produce a metallic green part without local melting of the metal. The green part may subsequently be sintered to remove the polymer and produce a fully dense metal part. Optionally, a step of debinding may also be performed prior to, or simultaneously with, sintering.
12
US10525632B2
Systems, devices, and methods for precision locating and assembly of additively manufactured components
Publication/Patent Number: US10525632B2 Publication Date: 2020-01-07 Application Number: 15/636,502 Filing Date: 2017-06-28 Inventor: Penny, Ryan Wade   Hart anastasios john   Assignee: Massachusetts Institute of Technology   IPC: B29C64/40 Abstract: Methods, systems, and devices for precision locating additively manufactured components for assembly and/or post processing manufacturing are provided for herein. In some embodiments, at least one component can be additively manufactured to include one or more kinematic features on one or more surfaces of the component. The kinematic feature(s) can be configured to engage complementary kinematic feature(s) formed in a second component so the two components can form an assembly. Alternatively, the kinematic feature(s) can be configured to engage complementary kinematic feature(s) associated with a post-processing machine such that the one or more post-processing actions can be performed on the component after the component is precisely located with respect to the machine by way of the kinematic features of the component and associated with the machine. A variety of systems and methods that utilize kinematic features are also provided.
13
WO2020018605A1
ADDITIVE MANUFACTURING VIA OPTICAL APERTURE DIVISION MULTIPLEXING
Publication/Patent Number: WO2020018605A1 Publication Date: 2020-01-23 Application Number: 2019042098 Filing Date: 2019-07-16 Inventor: Hart anastasios john   Penny, Ryan Wade   Assignee: Massachusetts Institute of Technology   IPC: B29C64/153 Abstract: Systems, devices, and methods for additive manufacturing as disclosed allow for improved optical access to a build platform. In at least some embodiments a multiplexing optic of an additive manufacturing device is configured to multiplex an arbitrary number of optical paths to a build platform along a substantially common optical axis by dividing a theoretical input aperture of the multiplexing optic into a plurality of sub-apertures. Each sub-aperture can independently receive and direct an optical path to the build platform. An optical path can be a light path from a light source or an optical process monitoring path from an optical process monitoring system or optical process monitoring device. In some embodiments, an optical path can enter the multiplexing optic off-axis and/or off- angle with respect to an optical axis of the multiplexing optic. The multiplexing optic can include one or more lens elements and/or one or more mirror elements.
14
US202016820A1
ADDITIVE MANUFACTURING VIA OPTICAL APERTURE DIVISION MULTIPLEXING
Publication/Patent Number: US202016820A1 Publication Date: 2020-01-16 Application Number: 20/191,651 Filing Date: 2019-07-16 Inventor: Hart anastasios john   Penny, Ryan Wade   Assignee: Massachusetts Institute of Technology   IPC: B29C64/393 Abstract: Systems, devices, and methods for additive manufacturing as disclosed allow for improved optical access to a build platform. In at least some embodiments a multiplexing optic of an additive manufacturing device is configured to multiplex an arbitrary number of optical paths to a build platform along a substantially common optical axis by dividing a theoretical input aperture of the multiplexing optic into a plurality of sub-apertures. Each sub-aperture can independently receive and direct an optical path to the build platform. An optical path can be a light path from a light source or an optical process monitoring path from an optical process monitoring system or optical process monitoring device. In some embodiments, an optical path can enter the multiplexing optic off-axis and/or off-angle with respect to an optical axis of the multiplexing optic. The multiplexing optic can include one or more lens elements and/or one or more mirror elements.
15
US2020115228A1
SYSTEMS, DEVICES, AND METHODS FOR DIRECT-WRITE PRINTING OF ELONGATED NANOSTRUCTURES
Publication/Patent Number: US2020115228A1 Publication Date: 2020-04-16 Application Number: 16/653,977 Filing Date: 2019-10-15 Inventor: Owens, Crystal Elaine   Mckinley, Gareth H.   Hart anastasios john   Assignee: Owens, Crystal Elaine   McKinley, Gareth H.   Hart, Anastasios John   IPC: B81C99/00 Abstract: The present disclosure is directed to tailoring the structure of freeform nanotube macrostructures through extrusion-based additive manufacturing for fabrication of planar and three-dimensional features and objects. Ink containing nanomaterials can be extruded into a fluid to precipitate into a fiber that can be used to form solid structures. The fluid can include a coagulant that promotes rapid solidification in the precipitation of fibers. The fluid can be disposed into a bath that is in fluid communication with the extruded ink. Systems and devices for executing such processes, are also provided.
16
US2020189131A1
CUTTING-EDGE STRUCTURES AND METHOD OF MANUFACTURING CUTTING-EDGE STRUCTURES
Publication/Patent Number: US2020189131A1 Publication Date: 2020-06-18 Application Number: 16/711,524 Filing Date: 2019-12-12 Inventor: Sonnenberg, Neville   Rao, Abhinav   Hart anastasios john   Kitchen, Paul   Assignee: The Gillette Company LLC   IPC: B26B9/02 Abstract: A novel cutting-edge structure and method and apparatus for manufacturing the cutting-edge structure is provided. The cutting-edge structure is comprised of naturally derived or renewable material at greater than 50% by volume fraction. In one embodiment, the naturally derived material is a cellulose nanostructure such as a cellulose nanocrystal. The cellulose nanocrystal is processed using a base or mold structure to provide a cutting edge of any shape such as linear or circular edge structures. The process includes dual cure steps to produce an optimal cutting-edge structure without shrinkage. The formed cutting-edge structure can be utilized as a razor blade as it is formed with very sharp tip and edge suitable for cutting hair. The base structure can form one or more cutting-edge structures simultaneously.
17
US10583677B2
Nanoporous stamp printing of nanoparticulate inks
Publication/Patent Number: US10583677B2 Publication Date: 2020-03-10 Application Number: 15/833,105 Filing Date: 2017-12-06 Inventor: Hart anastasios john   Kim, Sanha   Sojoudi, Hossein   Gleason, Karen K.   Assignee: Massachusetts Institute of Technology   IPC: B41K3/56 Abstract: Methods of printing nanoparticulate ink using nanoporous print stamps are disclosed. A nanoporous print stamp can include a substrate, a patterned arrangement of carbon nanotubes disposed on the substrate, and a secondary material disposed on the carbon nanotubes to reduce capillary-induced deformation of the patterned arrangement of carbon nanotubes when printing nanoparticulate ink. Some methods include loading a nanoporous print stamp with nanoparticulate colloidal ink such that the nanoparticulate colloidal ink is drawn into microstructures of the patterned arrangement of carbon nanotubes via capillary wicking. Nanoparticulate colloidal ink can include nanoparticles dispersed in a solution. The method also includes contacting a nanoporous stamp to a target substrate to form nanoscale contact points between the target substrate and the patterned arrangement of carbon nanotubes of the nanoporous print stamp so that nanoparticulate colloidal ink is drawn out of the nanoporous print stamp and onto the target substrate to form a pattern.
18
EP3666513A1
CUTTING-EDGE STRUCTURES
Publication/Patent Number: EP3666513A1 Publication Date: 2020-06-17 Application Number: 19215610.7 Filing Date: 2019-12-12 Inventor: Sonnenberg, Neville   Rao, Abhinav   Hart anastasios john   Kitchen, Paul   Assignee: The Gillette Company LLC   IPC: B29D99/00 Abstract: A novel cutting-edge structure and method and apparatus for manufacturing the cutting-edge structure is provided. The cutting-edge structure is comprised of naturally derived or renewable material at greater than 50% by volume fraction. In one embodiment, the naturally derived material is a cellulose nanostructure such as a cellulose nanocrystal. The cellulose nanocrystal is processed using a base or mold structure to provide a cutting edge of any shape such as linear or circular edge structures. The process includes dual cure steps to produce an optimal cutting-edge structure without shrinkage. The formed cutting-edge structure can be utilized as a razor blade as it is formed with very sharp tip and edge suitable for cutting hair. The base structure can form one or more cutting-edge structures simultaneously.
19
EP2969944B1
METHODS FOR DIRECT PRODUCTION OF GRAPHENE ON DIELECTRIC SUBSTRATES
Publication/Patent Number: EP2969944B1 Publication Date: 2020-04-22 Application Number: 14717589.7 Filing Date: 2014-03-13 Inventor: Veerasamy, Vijayen S.   Hart anastasios john   Mcnerny, Daniel Quinn   Assignee: Guardian Glass, LLC   The Regents Of The University Of Michigan   IPC: C01B32/20
20
EP3666490A1
METHOD OF MANUFACTURING CUTTING-EDGE STRUCTURES
Publication/Patent Number: EP3666490A1 Publication Date: 2020-06-17 Application Number: 19215607.3 Filing Date: 2019-12-12 Inventor: Sonnenberg, Neville   Rao, Abhinav   Hart anastasios john   Kitchen, Paul   Assignee: The Gillette Company LLC   IPC: B29C43/02 Abstract: A novel cutting-edge structure and method and apparatus for manufacturing the cutting-edge structure is provided. The cutting-edge structure is comprised of naturally derived or renewable material at greater than 50% by volume fraction. In one embodiment, the naturally derived material is a cellulose nanostructure such as a cellulose nanocrystal. The cellulose nanocrystal is processed using a base or mold structure to provide a cutting edge of any shape such as linear or circular edge structures. The process includes dual cure steps to produce an optimal cutting-edge structure without shrinkage. The formed cutting-edge structure can be utilized as a razor blade as it is formed with very sharp tip and edge suitable for cutting hair. The base structure can form one or more cutting-edge structures simultaneously.