Abstract: An electrospinning apparatus and method for producing three-dimensional electrospun constructs is disclosed. Further, electrospinning apparatus and method 3D electrospun collagen based mineralized nanofibrous scaffold for alveolar ridge preservation prior to dental implant therapy are disclosed.

Abstract: One or more aspects of the disclosure provides a nonwoven fabric comprising a single layer in which the single fabric layer comprises a plurality of different fibers in which each fiber type has desired functionality. In one aspect, a system for preparing a nonwoven fabric having a single fabric layer in which the single fabric layer comprises a plurality of different fiber types, is provided. The system includes a spin beam having a zoned distribution plate disposed upstream of a spinneret, the zoned distribution plate includes a plurality of distribution apertures arranged in zones, wherein each zone is configured and arranged to extrude a plurality of polymer streams that are of a different polymer type than polymer streams extruded by an adjacent zone to the spinneret to form a single layer having two or more types of fibers that are of a different type from each other.

Abstract: Provided are a method for producing a drawn conjugated fiber, capable of producing a conjugated fiber having a high strength and a thin fineness, and a drawn conjugated fiber. A drawn conjugated fiber is produced by performing a spinning step of obtaining an undrawn fiber having a core-sheath structure in which a core material is a resin containing, as a main component, a crystalline propylene polymer and a sheath material is a resin containing, as a main component, an olefin polymer having a melting point lower than that of the core material, by means of melt-spinning (step S1); and a drawing step of drawing the undrawn fiber (step S2).

Abstract: A system and method for providing a plurality of fibers from a spinneret; subjecting the fibers to quench air; attenuating the fibers through a closed stretching unit; reducing a velocity of the plurality of fibers in a diffuser that is spaced apart from an exit of the closed stretching unit in a direction of travel of the fibers, the diffuser having opposed diverging sidewalls; and subjecting the fibers to an applied electrostatic charge before the fibers enter the diffuser, wherein the electrostatic charge is applied by one or more electrostatic charging units.

Abstract: A control device for controlling an annealing apparatus that performs laser annealing by causing a laser beam to be incident on a surface of a semiconductor wafer and moving a beam spot of the laser beam on the surface of the semiconductor wafer, the control device making a sweep speed of the beam spot of the laser beam faster than twice a value obtained by dividing a thermal diffusivity of the semiconductor wafer by a thickness of the semiconductor wafer.

Abstract: Embodiments of the present disclosure provides methods and systems for preparing a cathode component. The method may include obtaining a three-dimensional (3D) model of the cathode component; obtaining a predetermined parameter, wherein the predetermined parameter includes at least one of a scanning direction of laser, an energy distribution of laser, an output power of laser, or a scanning speed of laser; and controlling a 3D printer to perform, based on the 3D model and the predetermined parameter, a laser scanning on a raw material to obtain the cathode component.

Abstract: To provide a guide wire shaping mold that reduces damage to a blood vessel by folding back a tip end of the guide wire and do not require heating treatment, and a guide wire shaping method using the guide wire shaping mold. A guide wire shaping mold configured to shaping by reducing an annular diameter of the guide wire in which a tip end is annularly arranged, the guide wire shaping mold includes a wire shaping portion configured such that an annular portion of the guide wire is arranged, and a wire drawing path formed in a passage way shape, communicating with the wire shaping portion, and configured to retract the guide wire in a linear direction and in a base end direction.

Abstract: Processes for making fibrous structures and more particularly processes for making fibrous structures comprising filaments are provided.

Abstract: Provided are a three-dimensional object additive manufacturing method and device, a storage medium and computer apparatus, where the method includes: forming a powder material layer by using a powder material; applying a liquid material onto the powder material layer according to layer printing data, where the liquid material dissolves at least part of the powder material, and the liquid material includes an active component capable of polymerization; and supplying energy to the powder material layer so that the active component in the liquid material is polymerized, the powder material itself is not polymerized and does not polymerize with the active component, and an area of the powder material layer to which the liquid material is applied is molded to obtain a slice layer of a three-dimensional object.

Abstract: The present invention provides a preparation method preparation method for three-layer artificial blood vessel and application thereof. The three-layer artificial blood vessel comprise three layers, electrospinning inner layer, dense middle layer and electrospinning outer layer, the three-layer structure is closely combined and difficult to separate. The inner layer with a cytoskeleton-like structure can promote the formation of intima; the dense middle layer can effectively prevent the leakage of biomacromolecules and increase the puncture resistance of the whole artificial blood vessel; and the outer layer can promote the growth of tissue cells and better integrate with tissue. The three-layer artificial blood vessel provided by the invention has excellent blood compatibility, good flexibility, good puncture resistance and interlayer peeling resistance. The preparation method is convenient and is suitable for industrial scale production.

Abstract: The invention provides for a method of delaying and reducing texture reversion of a textured artificial turf yarn (145), characterized by using a stretched and textured monofilament yarn as the textured artificial turf yarn, the stretched and textured monofilament yarn comprising a polymer mixture (400, 500), wherein the polymer mixture is at least a three-phase system, wherein the polymer mixture comprises a first polymer (402), a second polymer (404), and a compatibilizer (406), wherein the first polymer and the second polymer are immiscible, wherein the first polymer forms polymer beads (408) surrounded by the compatibilizer within the second polymer.

Abstract: Disclosed is a continuous preparation method of cellulose fibers, in which a forming tension of 0.1 to 1.9 cN/dtex is applied to a fine solution stream obtained by extrusion through a spinneret plate and air gap cooling, then the fine solution stream is fed into a coagulating bath at a speed of 80 to 1000 m/min, a traction tension of 0.075 to 1.5 cN/dtex is continued to be applied to washed fibers in a water washing system behind the coagulating bath, and finally, the washed fibers are fed into a post-treatment system for continuous and efficient spinning of finished fibers at a speed of 80 to 1000 m/min.

Abstract: There is provided a laser processing device that performs laser processing on an object made of a birefringent material, the device including: a light source that outputs laser light; a spatial light modulator that modulates the laser light output from the light source; a focusing lens that focuses the laser light toward the object; and a polarized light component control unit that is a function of the spatial light modulator to control polarized light components of the laser light such that the laser light is focused on one point in the object in a Z direction (optical axis direction).

Abstract: Devices and methods for nanofiber-based membrane fabrication are provided. Portable (e.g., handheld) electrostatic spinning or electrospinning devices can be used for nanofiber-based membrane fabrication (e.g., wound care films or membranes, such as cannabidiol (CBD)-loaded films or membranes) and can be wearable and/or ultralow power. The device can include a needleless spinneret having solution supplied thereto and all powered by a low voltage battery.

Abstract: A method for preparing a monodomain liquid crystal elastomer smart fiber incudes: during cross-linking process of the liquid crystal elastomer, drawing of liquid crystal elastomer fibers with uniform diameter from a polymer solution when the viscosity of the cross-linked polymer solution increases to a point where filaments can be drawn; heating by an infrared lamp to form filamentous liquid crystal elastomer fiber; natural air drying to remove excess solvent in the fiber; and stretching and collection of the fiber, followed by placement of the fiber, whereby the monodomain liquid crystal elastomer smart fiber is obtained.

Abstract: A method of preparing a thermoplastic roofing membrane, the method comprising (i) extruding a composition including a thermoplastic polymer and a mineral filler to form an extrudate; (ii) forming the extrudate into a sheet having first and second planar surfaces; (iii) allowing the sheet to at least partially cool; and (iv) mechanically treating the first planar surface of the sheet to thereby expose the mineral filler.

Abstract: A method of manufacturing a component (124) having a main body (116) and at least one ring sleeve (118) through a molding assembly (100), the method comprising: providing a mold (102) having an inlet (115) and defining a hollow portion (H); placing at least one core to form a free-space (104, 106) within the component (124) inside the mold (102) to bifurcate the hollow portion (H) into a first cavity and a second cavity; pouring a molding material (117) inside the mold (102) through the inlet (115); allowing the molding material (117) to set inside the mold (102) around the core within the first cavity and the second cavity to form a main body (116) and at least one ring sleeve (118) of the component (124); connecting the first cavity and the second cavity and forming at least one first bond and one second bond (130, 132, 134, 136) between the main body (116) and the at least one ring sleeve (118); and removing the at least one core from at least part of the hollow portion (H) within the mold (102); character

Abstract: A method of recycling a PET-containing material comprises: (1) providing an MRS extruder having an MRS section comprising a plurality of satellite screws and an outlet; (2) providing a vacuum pump in communication with the MRS section; (3) providing a spinning machine comprising an inlet, wherein the inlet is directly coupled to the outlet of the MRS extruder; (4) heating a plurality of PET-containing flakes in the MRS extruder to form a PET-containing melt; (5) increasing a surface area of the PET-containing melt by distributing the PET-containing melt across the plurality of satellite screws in the MRS extruder; (6) drawing off vapors from the PET-containing melt by reducing the pressure in the MRS section with the vacuum pump; (7) collating the PET-containing melt in the MRS extruder; and (8) extruding the PET-containing melt through the outlet of the MRS extruder into the inlet of the spinning machine.

Abstract: The disclosed methods relate to forming microneedle arrays from a production mold that comprises a flexible mold material. The disclosed methods can be used to reproducibly manufacture undercut dissolvable and coated microneedle arrays with various shapes and structures.

Abstract: Disclosed are a soft bistable magnetic actuator, a fabrication method thereof, a fatigue testing device, and an auto underwater vehicle. The method for fabricating the soft bistable magnetic actuator includes the following operations: casting a soft precursor by injection molding, wherein the soft precursor consists of a soft deformable portion and a soft peripheral portion surrounded, the soft deformable portion is made of magnetic particles and polymer, and the soft peripheral portion is made of a magnetic particle, a mixture of organic liquid, and polymer; and extracting the organic liquid by an organic solvent shrinks the soft peripheral portion, buckles the soft deformable portion towards one side.