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公开(公告)号：WO2020185158A1
公开(公告)日：2020-09-17
申请号：PCT/SG2020/050118
申请日：2020-03-09
摘要： There is provided a method of forming a polymeric thin film having shape memory properties. The method includes: forming a liquid-soluble supporting layer on a substrate; depositing a shape memory polymer layer on the liquid-soluble supporting layer, the shape memory polymer layer having a ratio of lateral dimension to thickness of 10 4 or greater; and removing the shape memory polymer layer from the liquid-soluble supporting layer and the substrate to produce a free-standing polymeric thin film comprising the shape memory polymer layer, of which is free-standing, wherein said removing the shape memory polymer layer from the liquid-soluble supporting layer and the substrate comprises dissolving the liquid-soluble supporting layer in a liquid to release the shape memory polymer layer from the liquid-soluble supporting layer.
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公开(公告)号：WO2021006820A1
公开(公告)日：2021-01-14
申请号：PCT/SG2020/050397
申请日：2020-07-09
IPC分类号： B29C64/106 , B33Y10/00 , B33Y30/00 , B33Y70/00
摘要： A method of printing a porous and/or non-porous three-dimensional structure is disclosed herein. The method includes providing an ink composition including a polymer dissolved in a solvent, dispensing the ink composition into a non-solvent at a temperature ranging from 20°C to 30°C, wherein the non-solvent renders precipitation of the ink composition to form the porous and/or non-porous three-dimensional structure in the non-solvent, and removing the non-solvent from the porous and/or non-porous three-dimensional structure. Disclosed herein includes a system operable to print a porous and/or non-porous three-dimensional structure, the system includes a syringe operable to dispense an ink composition into a non-solvent at a temperature ranging from 20°C to 30°C, wherein the ink composition includes a polymer dissolved in a solvent, and a motion control module which controls vertical and horizontal positioning of the syringe.
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公开(公告)号：WO2022010417A1
公开(公告)日：2022-01-13
申请号：PCT/SG2021/050391
申请日：2021-07-06
IPC分类号： B29C64/106 , A23C9/00 , B33Y70/00 , B33Y10/00 , A23P30/20
摘要： Herein disclosed includes an edible and 3D printable milk-based ink composition comprising milk powder present in an amount ranging from 10 to 75 w/w%, and water, wherein the edible and 3D printable milk-based ink composition is both printable and remains in a single phase at a temperature ranging from 20°C to 30°C. A method of 3D printing the edible and 3D printable milk-based ink composition is included herein. The method includes providing the edible and 3D printable milk-based ink, and dispensing the edible and 3D printable milk-based ink composition onto a substrate in the absence of temperature control of the edible and 3D printable milk-based ink composition.
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公开(公告)号：WO2022124997A1
公开(公告)日：2022-06-16
申请号：PCT/SG2021/050784
申请日：2021-12-10
IPC分类号： B29C64/106 , B29C64/40 , B33Y10/00 , B33Y30/00 , B33Y70/00
摘要： Herein disclosed is a method of printing a 3D freeform structure in an embedding medium. The method includes providing an ink composition in a nozzle, wherein the ink composition includes a thermoplastic, a non-thermoplastic, a thermally degradable polymer, and/or a thermosensitive polymer, dissolved in a solvent; dispensing the ink composition through a nozzle into the embedding medium to precipitate a printed structure from the ink composition, wherein the ink composition exits from the nozzle directly in the embedding medium; and maintaining the printed structure in the embedding medium until the immersion precipitation is completed for forming the 3D freeform structure. A system operable to carry out the method is also disclosed. The system includes a syringe coupled to a nozzle, wherein the syringe is operable to dispense an ink composition including a thermoplastic, a non-thermoplastic, a thermally degradable polymer, and/or a thermosensitive polymer, dissolved in a solvent, a motion control module which controls vertical and horizontal positioning of the syringe, and a support bath configured to house the embedding medium.
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5.发明申请
公开(公告)号：WO2021118468A1
公开(公告)日：2021-06-17
申请号：PCT/SG2020/050738
申请日：2020-12-10
摘要： There is provided a method of forming a thin film-based microfluidic electronic device. The method includes: providing a first elastomeric thin film layer on a substrate; depositing a first elastomer on the first elastomeric thin film by direct ink writing to form an elastomeric structure configured to define a microfluidic channel on the first elastomeric thin film layer; providing a second elastomeric thin film layer over the elastomeric structure to cover the microfluidic channel; providing a sacrificial layer on the second elastomeric thin film; depositing liquid metal into the microfluidic channel to form a conductor in the microfluidic channel; and electrically connecting the conductor to an electronic component. The thin film-based microfluidic electronic device is a tissue or skin adhesive sensor including a skin adhesive acoustic device.
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公开(公告)号：WO2023069019A2
公开(公告)日：2023-04-27
申请号：PCT/SG2022/050741
申请日：2022-10-18
IPC分类号： B29C64/393 , B29C64/118 , B33Y50/02 , B33Y10/00
摘要： A method of fabricating a porous structure based on extrusion-based additive manufacturing is provided. The method includes: controlling a print head of an extruder to move along a print path for extruding a material along the print path on a print bed for fabricating the porous structure; and controlling an extrusion flow rate of the extruder, while the print head is being controlled to move along the print path for extruding the material, for forming a plurality of pores of the porous structure. In particular, for each pore of the plurality of pores, the above-mentioned controlling the extrusion flow rate includes adjusting the extrusion flow rate with respect to a first section of the print path to form a first extruded material portion along the first section of the print path and adjusting the extrusion flow rate with respect to a second section of the print path to form a second extruded material portion along the second section of the print path, the second extruded material portion formed being adjacent to and opposing the first extruded material portion formed, such that a space is formed therebetween constituting the pore. A corresponding system for fabricating a porous structure is also provided, as well as the porous structure fabricated.
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公开(公告)号：WO2021080516A1
公开(公告)日：2021-04-29
申请号：PCT/SG2020/050612
申请日：2020-10-23
摘要： There is provided a method of forming a vasculature structure. The method includes: providing a microfluidic mold comprising a microchannel network made of a hydrogel matrix; forming a layer of hydrogel on an inner wall of the microchannel network of the microfluidic mold to form a perfusable hydrogel network; and removing the perfusable hydrogel network from the microfluidic mold to form the vasculature structure, the vasculature structure being free-standing. There is also provided a corresponding vasculature structure formed according to the method.
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