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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 16. Отображено 16.
03-07-2014 дата публикации

Method for Imprinting and Erasing Amorphous Metal Alloys

Номер: US20140186648A1
Автор: Jan Schroers, Golden Kumar, Hongxing Tang, SCHROERS JAN, KUMAR GOLDEN, TANG HONGXING
Принадлежит: Yale University

The present invention relates to materials, methods and apparatuses for performing imprint lithography using amorphous metallic materials. The amorphous metallic materials can be employed as imprint media and thermoplastic forming processes are applied during the pattern transfer procedure to produce micron scale and nanoscale patterns in the amorphous metallic layer. The pattern transfer is in the form of direct mask embossing or through a serial nano-indentation process. A rewriting process is also disclosed, which involves an erasing mechanism that is accomplished by means of a second thermoplastic forming process. The amorphous metallic materials may also be used directly as an embossing mold in imprint lithography to allow high volume imprint nano-manufacturing. This invention also comprises of a method of smoothening surfaces under the action of the surface tension alone.

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Номер записи: 1
28-08-2014 дата публикации

DESIGN OF A MOLD FOR FORMING COMPLEX 3D MEMS COMPONENTS

Номер: US20140238574A1
Автор: Emily R. Kinser, Jan Schroers, Golden Kumar, KINSER EMILY R, SCHROERS JAN, KUMAR GOLDEN, KINSER EMILY R.
Принадлежит: Yale University, International Business Machines Corporation

A mold structure having high-precision multi-dimensional components includes: depositing an oxide layer on a top surface of a plurality of semiconductor substrates, patterning a design integrated in one or more of the oxide layers; repositioning the substrates to enable the oxide layers make contact with one another; bonding in sequential order the repositioned substrates using a dielectric bonding, forming a three dimension (3D) mold; filling the 3D mold with filling material and removing the overburden filling material present on a top surface of the component. 1. A method of forming a mold structure having high-precision multi-dimensional components comprising:depositing an oxide layer on a top surface of a plurality of semiconductor substrates, patterning a design integrated in one or more of said oxide layers;repositioning said substrates to enable said oxide layers make contact with one another;bonding in sequential order said repositioned substrates using dielectric bonding, forming a three dimension (3D) mold; andfilling said 3D mold with filling material and removing overburden of said filling material present on a top surface of said component.2. The method of wherein said plurality of substrates is made of silicon claim 1 , silicon germanium claim 1 , quartz claim 1 , polymers claim 1 , or organic compounds.3. The method of further comprising backside grinding the top semiconductor substrate with an endpoint of a grinding process on said patterned dielectric bonding layer upon removal of the semiconductor layer.4. The method of wherein said filling said mold structure is performed with bulk metallic glass employing thermo-compression molding or blowmolding.5. The method of wherein said overburden removal is performed using backside grinding from a side of said mold in which said filling material is introduced.6. The method of claim 1 , further comprising forming a cavity of said 3D mold filled with material.7. The method of claim 6 , wherein said filling ...

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Номер записи: 2
18-08-2020 дата публикации

High-throughput fabrication of patterned surfaces and nanostructures by hot-pulling of metallic glass arrays

Номер: US0010745788B2
Автор: Molla Hasan, Golden Kumar, HASAN MOLLA, KUMAR GOLDEN, Hasan, Molla, Kumar, Golden
Принадлежит: Texas Tech University System, UNIV TEXAS TECH SYSTEM

The present invention includes composition and methods for the fabrication of very-high-aspect-ratio structures from metallic glasses. The present invention provides a method for nondestructive demolding of templates after thermoplastic molding of metallic glass features.

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Номер записи: 3
13-11-2018 дата публикации

Property enabled feature integration strategies and their fabrication methods for metallic glasses

Номер: US0010124391B1
Автор: Jan Schroers, Thomas MacKenzie Hodges, Golden Kumar, Rodrigo Miguel Ojeda Mota, SCHROERS JAN, HODGES THOMAS MACKENZIE, KUMAR GOLDEN, OJEDA MOTA RODRIGO MIGUEL, Schroers, Jan, Hodges, Thomas MacKenzie, Kumar, Golden, Ojeda Mota, Rodrigo Miguel
Принадлежит: Yale University, UNIV YALE

An article comprising a bulk metallic glass skin having one or more functional features integrated therein is described and a method of forming the same is described. The one or more functional features exhibit a variation in stiffness between the one or more functional features and the bulk metallic glass skin that is defined by an applied force over an achieved deformation. The stiffness of each of the one or more functional features is at least 1000 times less than an average stiffness of the bulk metallic glass skin.

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Номер записи: 4
28-03-2017 дата публикации

Method and system based on thermoplastic forming to fabricate high surface quality metallic glass articles

Номер: US0009604269B2
Автор: Golden Kumar, Jan Schroers, Jerzy Blawzdziewicz, Thomas Hodges, KUMAR GOLDEN, SCHROERS JAN, BLAWZDZIEWICZ JERZY, HODGES THOMAS, Kumar Golden, Schroers Jan, Blawzdziewicz Jerzy, Hodges Thomas
Принадлежит: Yale University, KUMAR GOLDEN, SCHROERS JAN, BLAWZDZIEWICZ JERZY, HODGES THOMAS, UNIV YALE, Kumar Golden, Schroers Jan, Blawzdziewicz Jerzy, Hodges Thomas

A method of processing BMGs in a non-ideal environment (such as air) to create a uniform and smooth surface is provided. By utilizing the contact-line movement and an engineered flow pattern during TPF the method is able to create complex BMG parts that exhibit uniform smooth appearance or even can be atomically smooth. In addition, to mending surface imperfections, this method also eliminates void formation inside the material, allows for the creation of precise patterns of homogeneous appearance, and forms improved mechanical locks between different materials and a BMG.

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Номер записи: 5
22-04-2010 дата публикации

Method for Imprinting and Erasing Amorphous Metal Alloys

Номер: US20100098967A1
Автор: Jan Schroers, Golden Kumar, Hongxing Tang, SCHROERS JAN, KUMAR GOLDEN, TANG HONGXING
Принадлежит:

The present invention relates to materials, methods and apparatuses for performing imprint lithography using amorphous metallic materials. The amorphous metallic materials can be employed as imprint media and thermoplastic forming processes are applied during the pattern transfer procedure to produce micron scale and nanoscale patterns in the amorphous metallic layer. The pattern transfer is in the form of direct mask embossing or through a serial nano-indentation process. A rewriting process is also disclosed, which involves an erasing mechanism that is accomplished by means of a second thermoplastic forming process. The amorphous metallic materials may also be used directly as an embossing mold in imprint lithography to allow high volume imprint nano-manufacturing. This invention also comprises of a method of smoothening surfaces under the action of the surface tension alone.

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Номер записи: 6
16-11-2017 дата публикации

HIGH-THROUGHPUT FABRICATION OF PATTERNED SURFACES AND NANOSTRUCTURES BY HOT-PULLING OF METALLIC GLASS ARRAYS

Номер: US20170327935A1
Автор: Molla Hasan, Golden Kumar
Принадлежит: Texas Tech University System

The present invention includes composition and methods for the fabrication of very-high-aspect-ratio structures from metallic glasses. The present invention provides a method for nondestructive demolding of templates after thermoplastic molding of metallic glass features.

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Номер записи: 7
04-02-2014 дата публикации

Method for imprinting and erasing amorphous metal alloys

Номер: US0008641839B2
Автор: Jan Schroers, Golden Kumar, Hongxing Tang, SCHROERS JAN, KUMAR GOLDEN, TANG HONGXING
Принадлежит: Yale University, SCHROERS JAN, KUMAR GOLDEN, TANG HONGXING, UNIV YALE, YALE UNIVERSITY

The present invention relates to materials, methods and apparatuses for performing imprint lithography using amorphous metallic materials. The amorphous metallic materials can be employed as imprint media and thermoplastic forming processes are applied during the pattern transfer procedure to produce micron scale and nanoscale patterns in the amorphous metallic layer. The pattern transfer is in the form of direct mask embossing or through a serial nano-indentation process. A rewriting process is also disclosed, which involves an erasing mechanism that is accomplished by means of a second thermoplastic forming process. The amorphous metallic materials may also be used directly as an embossing mold in imprint lithography to allow high volume imprint nano-manufacturing. This invention also comprises of a method of smoothening surfaces under the action of the surface tension alone.

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Номер записи: 8
22-08-2017 дата публикации

Mold for forming complex 3D MEMS components

Номер: US0009738517B2
Автор: Emily R. Kinser, Jan Schroers, Golden Kumar, KINSER EMILY R, SCHROERS JAN, KUMAR GOLDEN, Kinser Emily R., Schroers Jan, Kumar Golden
Принадлежит: International Business Machines Corporation, Yale University, IBM, UNIV YALE

A mold structure having high-precision multi-dimensional components which includes a first oxide layer superimposed on a top of a first semiconductor substrate; a second oxide layer superimposed on a top of a second semiconductor substrate; integrated designs patterned in at least one of the oxide layers; and the first and second semiconductor substrates bonded to one another into a three dimensional (3D) mold such that the first oxide layer only makes partial contact with the second oxide layer such that a portion of the first oxide layer avoids contact with the second oxide layer, the portion of the first oxide layer directly opposite a surface portion of the second semiconductor substrate that is free of the second oxide, the 3D mold selectively filled with a filling material to form a molded high-precision multi-dimensional component.

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Номер записи: 9
19-05-2022 дата публикации

Buckling-Assisted Manufacturing of Microscopic Metallic Tubes and Related Devices

Номер: US20220152676A1
Автор: Chandra Sekhar Meduri, Zhonglue Hu, Golden Kumar, Jerzy Blawzdziewicz, Harvinder Singh Gill
Принадлежит: Texas Tech University System

Embossing of metallic glass supercooled liquids into templates is emerging as a precision net-shaping and surface patterning technique for metals. Here, the effect of thickness of metallic glass on template-based embossing is disclosed. The results show that the existing embossing theory developed for thick samples fails to describe the process when the thickness of metallic glass becomes comparable to the template cavity diameter. Increased flow resistance at the cavity entrance results in viscous buckling of supercooled liquid instead of filling. A new phenomenological equation is proposed to describe the thickness dependent filling of template cavities. The buckling phenomenon is analyzed based on the folding model of multilayer viscous media. Controlled buckling can be harnessed in fabrication of metal microtubes, which are desirable for many emerging applications.

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Номер записи: 10
11-06-2015 дата публикации

METHOD AND SYSTEM BASED ON THERMOPLASTIC FORMING TO FABRICATE HIGH SURFACE QUALITY METALLIC GLASS ARTICLES

Номер: US20150158067A1
Автор: Golden Kumar, Jan Schroers, Jerzy Blawzdziewicz, Thomas Hodges, KUMAR GOLDEN, SCHROERS JAN, BLAWZDZIEWICZ JERZY, HODGES THOMAS
Принадлежит: YALE UNIVERSITY

A method of processing BMGs in a non-ideal environment (such as air) to create a uniform and smooth surface is provided. By utilizing the contact-line movement and an engineered flow pattern during TPF the method is able to create complex BMG parts that exhibit uniform smooth appearance or even can be atomically smooth. In addition, to mending surface imperfections, this method also eliminates void formation inside the material, allows for the creation of precise patterns of homogeneous appearance, and forms improved mechanical locks between different materials and a BMG. 1. A method of shaping a bulk metallic glass comprising:providing a bulk metallic glass feedstock having an inner bulk region surrounded by an initial rough outer surface region, the feedstock being heated to a temperature within thermoplastic zone of the bulk metallic glass;placing the outer region of the feedstock into contact with at least one solid surface in fluid communication with at least one shaping tool;inducing the feedstock to flow along the at least one solid surface toward the shaping tool such that the leading edge of the flow of the feedstock forms a contact-line with the solid surface, and wherein the motion of the contact-line along the solid surface induces an interfacial flow of the feedstock material from the bulk towards the solid surface; andmaintaining the flow of the feedstock along the solid surface until substantially all of the initial outer region of the feedstock at the contact-line of the alloy is replaced with a new smooth outer region formed from the interfacial flow of the bulk of the feedstock to the outer region of the feedstock prior to the feedstock coming into contact with the at least one shaping tool.3. The method of claim 2 , wherein the contact angle is around 90°.4. The method of claim 1 , wherein the feedstock is placed into contact with at least two parallel solid surfaces.5. The method of claim 4 , wherein the at least two solid surfaces form a channel ...

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Номер записи: 11
24-05-2012 дата публикации

CARBON MOLDS FOR USE IN THE FABRICATION OF BULK METALLIC GLASS PARTS AND MOLDS

Номер: US20120125071A1
Автор: Jan Schroers, Golden Kumar, Marc Madou, Rodrigo Martinez-Duarte, SCHROERS JAN, KUMAR GOLDEN, MADOU MARC, MARTINEZ-DUARTE RODRIGO
Принадлежит: UNIVERSITY OF CALIFORNIA, YALE UNIVERSITY

Novel molds and methods for Bulk Metallic Glass (BMG) molding using carbon templates obtained from pyrolyzed materials are provided. The method employs the Carbon MEMS (C-MEMS) technique to derive molds of different geometries and dimensions. The resultant carbon structures are stable at very high temperatures and have sufficient mechanical strength to be used as master molds for the thermoplastic forming of BMGs.

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Номер записи: 12
24-12-2015 дата публикации

DESIGN OF A MOLD FOR FORMING COMPLEX 3D MEMS COMPONENTS

Номер: US20150368100A1
Автор: Emily R. Kinser, Jan Schroers, Golden Kumar
Принадлежит: International Business Machines Corp, YALE UNIVERSITY

A mold structure having high-precision multi-dimensional components which includes a first oxide layer superimposed on a top of a first semiconductor substrate; a second oxide layer superimposed on a top of a second semiconductor substrate; integrated designs patterned in at least one of the oxide layers; and the first and second semiconductor substrates bonded to one another into a three dimensional (3D) mold such that the first oxide layer only makes partial contact with the second oxide layer such that a portion of the first oxide layer avoids contact with the second oxide layer, the portion of the first oxide layer directly opposite a surface portion of the second semiconductor substrate that is free of the second oxide, the 3D mold selectively filled with a filling material to form a molded high-precision multi-dimensional component.

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Номер записи: 13
02-02-2016 дата публикации

Mold for forming complex 3D MEMS components

Номер: US0009249015B2
Автор: Emily R. Kinser, Jan Schroers, Golden Kumar, KINSER EMILY R, SCHROERS JAN, KUMAR GOLDEN, KINSER EMILY R.
Принадлежит: International Business Machines Corporation, Yale University, IBM, UNIV YALE, INTERNATIONAL BUSINESS MACHINES CORPORATION, YALE UNIVERSITY

A mold structure having high-precision multi-dimensional components includes: depositing an oxide layer on a top surface of a plurality of semiconductor substrates, patterning a design integrated in one or more of the oxide layers; repositioning the substrates to enable the oxide layers make contact with one another; bonding in sequential order the repositioned substrates using a dielectric bonding, forming a three dimension (3D) mold; filling the 3D mold with filling material and removing the overburden filling material present on a top surface of the component.

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Номер записи: 14
30-09-2010 дата публикации

Carbon molds for use in the fabrication of bulk metallic glass parts and molds

Номер: WO2010111701A1
Автор: Golden Kumar, Jan Schroers, Marc Madou, Rodrigo Martinez-Duarte
Принадлежит: Regents of the University of California, YALE UNIVERSITY

Novel molds and methods for Bulk Metallic Glass (BMG) molding using carbon templates obtained from pyrolyzed materials are provided. The method employs the Carbon MEMS (C-MEMS) technique to derive molds of different geometries and dimensions. The resultant carbon structures are stable at very high temperatures and have sufficient mechanical strength to be used as master molds for the thermoplastic forming of BMGs.

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Номер записи: 15
25-11-2009 дата публикации

Method for imprinting and erasing amorphous metal alloys

Номер: EP2121992A1
Автор: Golden Kumar, Hongxing Tang, Jan Schroers
Принадлежит: YALE UNIVERSITY

The present invention relates to materials, methods and apparatuses for performing imprint lithography using amorphous metallic materials. The amorphous metallic materials can be employed as imprint media and thermoplastic forming processes are applied during the pattern transfer procedure to produce micron scale and nanoscale patterns in the amorphous metallic layer. The pattern transfer is in the form of direct mask embossing or through a serial nano-indentation process. A rewriting process is also disclosed, which involves an erasing mechanism that is accomplished by means of a second thermoplastic forming process. The amorphous metallic materials may also be used directly as an embossing mold in imprint lithography to allow high volume imprint nano-manufacturing. This invention also comprises of a method of smoothening surfaces under the action of the surface tension alone.

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Номер записи: 16