Abstract:
A nozzle is provided for use in a dynamic electrostatic air filter, in which the nozzle includes an internal electrode that charges a semiconductive liquid, and includes an external electrode that assists in breaking the liquid into droplets in a predetermined direction. Banks of multiple nozzles are also disclosed, which are separated by a charged “separation electrode” to prevent interference with spray patterns between adjacent banks. An electrostatic fountain is also disclosed which discharges a fragrance, or an inhalable medicine.
Abstract:
First, through a coating step, a photolithography step and an etching step, a plurality of electrodes 142, 142, . . . are formed on a base plate 141. Next, a resist layer 143b is formed on the base plate 141 so as to cover all of the electrodes 142, 142, . . . , and by exposing and developing the resist layer 143b, a nozzle 103 having a super minute diameter is formed to stand with respect to the base plate 141 so as to make the resist layer 143b correspond to each electrode 142, and an in-nozzle passage is formed in each nozzle 103.
Abstract:
The invention relates to a method and devices for the production of capillary microjets and microparticles that can have a size of between hundreds of micrometers and several nanometers. The inventive method makes use of the combined effects of electrohydrodynamic forces, fluid-dynamic forces and a specific geometry in order to produce micro- and nano-capsules or fluid jets, single- or multi-component, which, upon disintegrating or splitting, form a significantly monodispersed spray of drops which have a controlled micro- or nanometric size and which can also comprise a specific internal structure, such as, for example, a nucleus which is surrounded by a cortex of a different substance or several concentric or non-concentric nuclei or vesicles which are surrounded by a cortex.
Abstract:
Spraying apparatus and methods that employ multiple nozzle structures for producing multiple sprays of particles, e.g., nanoparticles, for various applications, e.g., pharmaceuticals, are provided. For example, an electrospray dispensing device may include a plurality of nozzle structures, wherein each nozzle structure is separated from adjacent nozzle structures by an internozzle distance. Sprays of particles are established from the nozzle structures by creating a nonuniform electrical field between the nozzle structures and an electrode electrically isolated therefrom.
Abstract:
A method of fabricating deposits of non-volatile substances, including biomacromolecules, in the form of spots and filing on a substrate surface by electrospray, where the deposits are used to determine the interaction of the deposited non-volatile substances to other substances. Also included in this method is the mass fabrication on a single chip of an array of single and multicomponent microsamples.
Abstract:
An apparatus for actuating a droplet comprises a first conductive layer, a second conductive layer, a conductive elongate element, and a voltage source. The first conductive layer comprises a first hydrophobic surface. The second conductive layer comprises a hydrophilic surface facing the first hydrophobic surface. The second conductive layer is axially spaced from the first conductive layer to define a gap therebetween. The conductive medial element is disposed in the gap between the first and second conductive layers, and comprises a second hydrophobic surface. The voltage source communicates with the second conductive layer and the elongate element. By applying a voltage potential between the elongate element and the second conductive layer, droplets can be electrostatically actuated so as to move from the first conductive layer into contact with the second conductive layer. The apparatus is particularly useful in the synthesis of microarrays of biological, chemical, or biochemical samples.
Abstract:
A device for producing a color filter includes a part for storing a solution in which a light transmitting material is dissolved, a part for feeding the solution to a tip of a flying electrode, a part for applying a voltage between the tip of the flying electrode and an electro-conductive material of a color filter substrate so as to form an electrostatic field, and a part for relatively shifting the tip of the flying electrode and the color filter substrate to a perpendicular direction and to a horizontal direction. The solution is formed into a stringy beam which is let to fly onto the color filter substrate so that the solution is injected into a concavity formed and surrounded by a black matrix on the color filter substrate, and forms red, green and blue light emitting layers.
Abstract:
A liquid coating is formed by spraying drops of liquid onto a substrate or a transfer surface from an electrostatic spray head that produces a mist of drops and a wet coating in response to an electrostatic field. During spraying, the electrostatic field is repeatedly altered to change the pattern deposited by the drops. The wet coating can be contacted with two or more pick-and-place devices that improve the uniformity of the coating.
Abstract:
A device for collecting dust using highly charged hyperfine liquid droplets formed through an electro-hydrodynamic atomization process is disclosed. In the dust collecting device of this invention, a high voltage is applied to capillaries, set within a dust guide duct and having nozzles at their tips. An electric field is thus formed between the capillaries and the duct, and allows the nozzles to spray highly charged hyperfine liquid droplets. Such liquid droplets absorb dust laden in air, flowing in the duct by suction force of a fan. An electrostatic dust collector is detachably coupled to the duct while being insulated from the duct, and forms an electric field having polarity opposite to that of the highly charged liquid droplets, thus electrostatically collecting and removing the dust absorbed by the highly charged liquid droplets. The dust collecting device of this invention easily and effectively removes fine dust having a size smaller than 0.1 cm. This device is also preferably operable at low cost while achieving a desired dust collection effect, and is collaterally advantageous in that it humidifies discharged air, when water is used as the liquid for atomization of the hyperfine liquid droplets.
Abstract:
A electrohydrodynamic aerosol sprayer wherein a gas flow deflector is used for creating a gas flow past the spray nozzle to stabilize the Taylor cone and to transport at least a portion of the aerosol away from the region downstream of the spray nozzle. This stabilization of the cone and transport of aerosol improves the droplet size and distribution and may also reduce the deposit of droplets on the internal components of the device.