公开(公告)号：US20230264418A1

公开(公告)日：2023-08-24

申请号：US18170950

申请日：2023-02-17

申请人： Dharneedar Ravichandran ,  Weiheng Xu ,  Mounika Kakarla ,  Sayli Jambhulkar ,  Yuxiang Zhu ,  Kenan Song

发明人： Dharneedar Ravichandran ,  Weiheng Xu ,  Mounika Kakarla ,  Sayli Jambhulkar ,  Yuxiang Zhu ,  Kenan Song

IPC分类号： B29C64/209 ,  B29C64/118 ,  B33Y30/00 ,  B33Y10/00

CPC分类号： B29C64/209 ,  B29C64/118 ,  B33Y10/00 ,  B33Y30/00 ,  B29K2029/04

摘要： An additive manufacturing print head includes a spinneret defining a first channel configured to receive a first feedstock and a second channel configured to receive a second feedstock. The spinneret is configured to provide a bilayer extrudate including a layer of the first feedstock in direct contact with a layer of the second feedstock. The print head further includes a minimizer configured to receive the bilayer extrudate from the spinneret and to reduce a flow area of bilayer extrudate transverse to a flow direction of the bilayer extrudate, and a multiplier configured to transform the bilayer extrudate from the minimizer to a multilayer extrudate. The multilayer extrudate includes alternating layers of the first feedstock and the second feedstock.

公开(公告)号：US20230304193A1

公开(公告)日：2023-09-28

申请号：US18073975

申请日：2022-12-02

申请人： Rahul Franklin ,  Weiheng Xu ,  Dharneedar Ravichandran ,  Sayli Jambhulkar ,  Yuxiang Zhu ,  Kenan Song

发明人： Rahul Franklin ,  Weiheng Xu ,  Dharneedar Ravichandran ,  Sayli Jambhulkar ,  Yuxiang Zhu ,  Kenan Song

IPC分类号： D01F8/18 ,  D01F8/08 ,  D01F11/00 ,  D01D5/06 ,  D01D5/34

CPC分类号： D01F8/18 ,  D01D5/06 ,  D01D5/34 ,  D01F8/08 ,  D01F11/00

摘要： A carbonized coaxial composite fiber includes an inner layer including carbonized polyacrylonitrile, a middle layer surrounding the inner layer and including carbonized graphene nanomaterials, and an exterior layer surrounding the middle layer including carbonized polyacrylonitrile. The carbonized graphene nanomaterials are aligned along a length of the coaxial composite fiber.

公开(公告)号：US20230339173A1

公开(公告)日：2023-10-26

申请号：US18307278

申请日：2023-04-26

申请人： Sayli Jambhulkar ,  Siying Liu ,  Weiheng Xu ,  Dharneedar Ravichandran ,  Yuxiang Zhu ,  Kenan Song ,  Pruthvirajsinh Vala

发明人： Sayli Jambhulkar ,  Siying Liu ,  Weiheng Xu ,  Dharneedar Ravichandran ,  Yuxiang Zhu ,  Kenan Song ,  Pruthvirajsinh Vala

IPC分类号： B29C64/124 ,  B33Y70/10 ,  B29C64/245 ,  B29C64/321 ,  B33Y10/00 ,  B33Y80/00

CPC分类号： B29C64/124 ,  B33Y70/10 ,  B29C64/245 ,  B29C64/321 ,  B33Y10/00 ,  B33Y80/00 ,  B29K2671/02

摘要： An additive manufacturing ink includes MXene nanoparticles including a titanium carbide represented by Ti3C2Tx, where x is an integer and each T is a functional group or an atom (e.g., O, F, OH, or Cl). Additive manufacturing includes depositing a first amount of an ink including MXene nanoparticles in a region of a microchannel defined by a substrate, allowing the first amount of the ink to flow in the microchannel by capillary action to form a first layer of the ink in the microchannel, depositing a second amount of the ink in the region of the microchannel, and allowing the second amount of the ink to flow in the microchannel by capillary action to form a second layer of the ink atop the first layer of ink. A pressure sensor includes a substrate defining a microchannel, and a multiplicity of MXene film layers deposited in the microchannel.

公开(公告)号：US20220403557A1

公开(公告)日：2022-12-22

申请号：US17839975

申请日：2022-06-14

申请人： Weiheng Xu ,  Kenan Song ,  Yuxiang Zhu ,  Sayli Jambhulkar ,  Dharneedar Ravichandran

发明人： Weiheng Xu ,  Kenan Song ,  Yuxiang Zhu ,  Sayli Jambhulkar ,  Dharneedar Ravichandran

IPC分类号： D01D5/28 ,  D01F1/10 ,  D01F8/08 ,  D04H3/002 ,  D04H3/005 ,  D01D5/04

摘要： Fabricating a multilayered polymer nanocomposite fiber includes injecting a first polymer solution and a second polymer solution to a head of spinneret to yield a two-layered fiber precursor in the spinneret, passing the two-layered fiber precursor through one or more multipliers in the spinneret to yield a multilayered fiber precursor having 2n+1 layers, passing the multilayered fiber precursor through a gap between an exit of the spinneret and into a coagulation bath, and coagulating the multilayered fiber precursor in the coagulation bath to yield a multilayered polymer nanocomposite fiber. The multilayered polymer nanocomposite fiber includes alternating layers of a first polymer formed from the first polymer solution and a second polymer formed from the second polymer solution. The second polymer solution includes carbon nanostructures.

公开(公告)号：US20240342981A1

公开(公告)日：2024-10-17

申请号：US18633255

申请日：2024-04-11

申请人： Kenan Song ,  Dharneedar Ravichandran ,  Yuxiang Zhu

发明人： Kenan Song ,  Dharneedar Ravichandran ,  Yuxiang Zhu

IPC分类号： B29C64/118 ,  B29C64/194 ,  B29K67/00 ,  B29K75/00 ,  B29K105/16 ,  B29K505/12 ,  B33Y40/10 ,  B33Y70/10 ,  B33Y80/00

CPC分类号： B29C64/118 ,  B29C64/194 ,  B33Y40/10 ,  B33Y70/10 ,  B33Y80/00 ,  B29K2067/04 ,  B29K2075/00 ,  B29K2105/162 ,  B29K2505/12 ,  B29K2995/0008

摘要： Fabricating a stimuli-responsive object includes providing a first feedstock and a second feedstock to a print head, extruding a multi-sublayer extrudate from the print head, depositing the multi-sublayer extrudate on a substrate to yield an extrudate layer, and curing the extrudate layer to yield the stimuli-responsive object. A first feedstock, a second feedstock, or both includes one or more stimuli-responsive polymer composites, and the print head includes n multipliers. A multi-sublayer extrudate includes 2(n+1)/2 sublayers of a first feedstock and 2(n+1)/2 sublayers of a second feedstock, and 2(n+1)/2−1 sublayers of a first feedstock are in direct contact with two sublayers of a second feedstock. A stimuli-responsive polymer composite includes thermally actuated polymers. A stimuli-responsive polymer composite includes thermoplastic polymers. A stimuli-responsive polymer composite includes magnetic material. A magnetic material includes iron oxide nanoparticles.