The present invention relates generally to the field of electrospinning. In particular, the present invention relates to an electrospinning device that includes a slit-fixture defined by an elongate aperture disposed between opposing elements of an electrically conductive material. These elements include a variety of patterns/shapes that affect the flow of fluid through the aperture and the electrical field across the aperture.

Various examples are provided for magnetic particle imbedded nanofibrous membranes. In one example, among others, a nanofibrous membrane includes one or more electrospun nanofibers forming form a layer of nanofibers, and a plurality of magnetic nanoparticles embedded in the one or more electrospun nanofibers. In another example, a method includes generating one or more electrospun nanofibers including magnetic nanoparticles from one or more nozzles positioned over a substrate to form a magnetic nanofibrous layer, and affixing the magnetic nanofibrous layer to a support structure. In another example, a system includes a magnetic nanofibrous membrane affixed to a support structure, and a magnetic field generator configured to generate a magnetic field that passes through the magnetic nanofibrous membrane.

A handheld device for producing electrospun fibrous mat comprises: a housing configured to be handheld by a user; a container accommodating at least one electrospinning medium; at least a nozzle in fluid communication with the container; a mechanism dispensing the medium from the container via said nozzle; an auxiliary electrode surrounding the nozzle; and a power supply providing electric potentials to the nozzle and the auxiliary electrode. The housing comprises an electrically conductive portion configured to be gripped by the user during operation. The electrically conductive portion is connected to the power supply.

An electrospinning system, method, and apparatus comprises a dual polarity high voltage power supply with much less power out for safe operation, a solution dispensing assembly held at high positive potential by the dual polarity power supply, a Corona discharge assembly held at high negative potential by the dual polarity power supply, and a drum collector held at ground potential wherein a solution is drawn from the solution dispensing assembly to the drum collector thereby forming a fiber mat.

The invention relates to an electrospinning apparatus and method of use thereof.

A spinneret (1) for electrostatic spinning is configured from a structure of an electrically conductive metal material. The structure is provided with a long-axis direction (X), a short-axis direction (Z), and a thickness direction (Y). An inflow port (10) for a spinning starting material fluid is provided to one surface of the structure. A plurality of protrusions (5) are formed on another surface of the structure so as to be aligned along the long-axis direction (X). Each of the plurality of protrusion (5) extends so as to protrude from the structure. The protrusions (5) have, provided to apexes (2) thereof, discharge holes (4) for discharging the starting material fluid. The pitch of the discharge holes (4) exceeds 1 mm.

An apparatus and method for forming a three-dimensional (3D) pattern using electrojetting, the apparatus including: a syringe tip having one end from which a polymer jet is discharged; a substrate that is disposed in a direction in which the polymer jet is discharged, and that forms an electric field between the substrate and the syringe tip; and a movement unit that moves the syringe tip or the substrate, wherein the polymer jet discharged from the syringe tip is moved relative to an upper side of the substrate and is stacked on the substrate.

A cartridge for an electrostatic spraying device according to the present invention is a cartridge for an electrostatic spraying device, the cartridge comprises a storage bag having a storage section in which a liquid composition is stored, the storage section is surrounded by a joint portion formed by joining a pair of laminates, each of the laminates comprises an innermost layer on the joint portion side, an outermost layer on a side opposite to the innermost layer, and a barrier layer between the innermost layer and the outermost layer, and the liquid composition comprises 50 mass % or more of a volatile liquid agent selected from alcohols and ketones.

An electrostatic spray device, comprising: an electrostatic spray main body capable of containing a liquid containing portion of a cartridge, the cartridge including the liquid containing portion that contains a liquid and a spray unit that sprays the liquid, the electrostatic spray device spraying the liquid by the electrostatic spray main body applying a voltage to the liquid, in which the cartridge has conductivity in at least one portion of the liquid containing portion, and the electrostatic spray main body includes a high-voltage generating unit which generates a high voltage, and a contact portion which is in contact with the portion having conductivity of the liquid containing portion contained in the electrostatic spray main body and applies the high voltage to the liquid in the liquid containing portion through the portion having conductivity.

Electrospinning (ES) produces fibers with small cross-sections and high surface area, making them ideal for a multitude of applications. Structures produced using ES methods exhibit a high surface-to-volume ratio, tunable porosity, and controllable composition. ES involves the delivery of a liquid or solid polymer to a spinneret, whereby, an initiated electric field pulls the polymer into micro to nano-scale fibers. Due to the multitude of applications for which polymer fibers can be used, it is desirable to provide an efficient and portable ES device that allows on-demand deposition of polymer materials. The invention that is subject of this patent application is a portable ES device that allows ideal deposition on a substrate regardless of whether that substrate is attached to high voltage or grounded, and regardless of whether or not there is a charged or grounded substrate behind the desired deposition surface.