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公开(公告)号：US20210189606A1
公开(公告)日：2021-06-24
申请号：US17126510
申请日：2020-12-18
发明人： BaeKyun KIM , Julia BYKOVA , Luis PLATA , Yang YANG , Márcio D. LIMA
摘要： Systems for fabricating nanofiber yarn at rates of at least 30 m/min (1.8 kilometers (km)/hour (hr)) using a “false twist” nanofiber yarn spinner and a false twist spinning technique are disclosed. In a false twist spinning technique, a twist is introduced to nanofibers in a strand by twisting the nanofibers at points between ends of the strand. This is in contrast to the “true twist” technique where one end of a strand is fixed and the opposing end of the strand is rotated to introduce the twist to intervening portions of yarn.
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公开(公告)号：US20210163295A1
公开(公告)日：2021-06-03
申请号：US17162355
申请日：2021-01-29
发明人： Marcio D. Lima , Julia Bykova
IPC分类号： C01B32/176 , D01D5/42 , D01F9/12 , D02G3/16 , C01B32/16
摘要： Techniques are described for controlling widths of nanofiber sheets drawn from a nanofiber forest. Nanofiber sheet width can be controlled by dividing or sectioning the nanofiber sheet in its as-drawn state into sub-sheets as the sheet is being drawn. A width of a sub-sheet can be controlled or selected so as to contain regions of uniform nanofiber density within a sub-sheet (thereby improving nanofiber yarn consistency) or to isolate an inhomogeneity (whether a discontinuity is the sheet (e.g., a tear) or a variation in density) within a sub-sheet. Techniques for dividing a nanofiber sheet into sub-sheets includes mechanical, corona, and electrical arc techniques.
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公开(公告)号：US10995195B2
公开(公告)日：2021-05-04
申请号：US15916802
申请日：2018-03-09
发明人： Marcio D. Lima , Julia Bykova , Takahiro Ueda
IPC分类号： C09J7/38 , C08K3/04 , B32B3/28 , B32B5/02 , B32B5/12 , B32B7/12 , B32B9/00 , B32B15/14 , C09J9/02 , C09J7/22 , C08J5/18 , C08J7/04 , C08J7/043 , C08J7/044 , B32B7/06 , C09J201/02 , B32B17/10 , B32B27/30 , C08J5/04 , C08L23/08 , C08L29/14 , C08K3/08 , C08K7/06 , B82Y40/00 , B32B9/04
摘要： Examples described include composite nanofibers sheets that have been “infiltrated” with a polymer (i.e., the polymer has flowed past a surface of the nanofiber sheet and into at least some of spaces within the sheet defined by the nanofibers). An adhesive nanofiber tape is formed when the infiltrating polymer is an adhesive and the adhesive infiltrates the nanofiber sheet from a one major surface of the nanofiber sheet. In other described examples, some portions of nanofibers in the sheet have been conformally coated with at least one metal layer.
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公开(公告)号：US10978965B2
公开(公告)日：2021-04-13
申请号：US15957087
申请日：2018-04-19
发明人： Jaeah Lee
摘要： A triboelectric generator include at least two yarns, one of which has been infiltrated with a material having a positive triboelectric affinity and one of which has been infiltrated with a material having a negative triboelectric affinity. The at least two yarns are threaded through holes within a disk so that both of the yarns are disposed on both sides of the disk and pass through the holes within the disk. The at least two yarns are helically wrapped (or “coiled”) together on both sides of the disk. During uncoiling, the moving contact between the two yarns, infiltrated with materials having opposite triboelectric affinities, causes an electrical charge to develop. The generated electrical charge can be conducted away for use as electricity.
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公开(公告)号：US20210070581A1
公开(公告)日：2021-03-11
申请号：US17085397
申请日：2020-10-30
IPC分类号： B65H51/16 , D02G3/16 , D02G3/40 , H01B1/04 , D01F9/127 , C01B32/16 , D02G3/44 , B65H49/20 , C01B32/158
摘要： A dispenser is described for dispensing nanofiber yarns that includes a housing that defines an inlet, an outlet, and a chamber. A spool, around which is wound a length of nanofiber yarn, is disposed within the chamber defined by the housing. The nanofiber yarn is threaded from the chamber through the outlet and can be dispensed in a controlled way that reduces the likelihood of developing knots within the nanofiber yarn, and which facilitates convenient application of the yarn onto an underlying surface. In some cases, the dispenser can be used to concurrently dispense an adhesive or other polymer along with the nanofiber yarn.
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公开(公告)号：US20200181811A1
公开(公告)日：2020-06-11
申请号：US16685085
申请日：2019-11-15
发明人： Jaeah Lee
摘要： A method of continuous production of thermochromic nanofiber yarns is described. The method includes applying a first thermochromic material to a nanofiber sheet, and then twisting that nanofiber sheet into a first thermochromic yarn. A second thermochromic material is optionally applied to the first thermochromic yarn to produce a second thermochromic yarn. Alternatively, a homogeneous mixture of the first and the second thermochromic materials is applied to a nanofiber sheet in a single layer to produce a thermochromic nanofiber yarn. The thermochromic yarn can be a single ply yarn or a multi-ply yarn depending on the color to be displayed.
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公开(公告)号：US20190352182A1
公开(公告)日：2019-11-21
申请号：US16397036
申请日：2019-04-29
发明人： Marcio D. Lima
IPC分类号： C01B32/16
摘要： A nanofiber sheet dispenser that houses a nanofiber forest from which a nanofiber sheet can be drawn is described. Using the nanofiber sheet dispenser, a nanofiber forest disposed on a substrate can be moved, transported, and/or shipped with a reduced risk of damage relative to transporting a nanofiber sheet. Techniques are also described for configuring the nanofiber sheet dispenser so that a nanofiber sheet can be conveniently drawn from the forest and, in some cases, drawn so as to form a nanofiber yarn that is continuous with both the nanofiber sheet and the nanofiber forest, the latter of which is within the nanofiber sheet dispenser.
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公开(公告)号：US20190282733A1
公开(公告)日：2019-09-19
申请号：US16353608
申请日：2019-03-14
发明人： Julia Bykova , Marcio D. Lima , Kanzan Inoue
摘要： Nerve scaffolds are described that include a tubular outer housing fabricated from a biocompatible polymer, within which are disposed a plurality of carbon nanofiber yarns. The carbon nanofiber yarns, which can be separated by distances roughly corresponding to an average nerve fiber diameter, provide surfaces on which nerve fibers can regrow. Because the proximate carbon nanofiber yarns can support individual nerve fibers, a nerve can be regenerated with a reduced likelihood of undesirable outcomes, such as nerve pain or reduced nerve function.
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公开(公告)号：US20190277266A1
公开(公告)日：2019-09-12
申请号：US16466532
申请日：2017-12-07
发明人： Marcio Dias Lima , Yang Yang , Luis Plata , Marilu Guerrero , Franklin Le , Randy Allen
摘要： A hinge-type actuator device in accordance with the present disclosure may include a first and second paddle, a first and second artificial muscle actuator segment, and a plurality of contacts, where the first and second artificial muscle actuator segments are actuated via the contacts, actuation of the first artificial muscle actuator segment causes the first and second paddle to open the hinge-type actuator, and actuation of the second artificial muscle actuator segment causes the first and second paddle to close the hinge-type actuator.
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70.发明申请公开(公告)号：US20190136094A1
公开(公告)日：2019-05-09
申请号：US16096610
申请日：2017-04-28
发明人： Takahiro UEDA , Masaharu ITO , Kanzan INOUE
IPC分类号： C09J7/29 , C01B32/168 , C09J7/38 , C09J9/02
摘要： L1 is a maximum distance across a non-contacting section between intersection points of a straight line crossing the non-contacting section in parallel with an alignment direction of a carbon nanotubes in a plan view of a mounting section with a border between the non-contacting section and a contacting section. L2 is a maximum distance across the non-contacting section between intersection points of a straight line crossing the non-contacting section and intersecting the alignment direction of the carbon nanotubes in the plan view of the mounting section with the border between the non-contacting section and the contacting section. When L1 is larger than L2, at least L2 is more than 0 mm and less than 10 mm. When smaller, at least L1 is more than 0 mm and less than 10 mm. When equal, L1 and L2 are each more than 0 mm and less than 10 mm.
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