Abstract:
The invention relates to a method of manufacturing a dry powder particle, preferably using electrohydrodynamic spraying, wherein two oppositely charged aerosol streams are contacted. The invention allows for the manufacture of powders having various, controllable compositions and shapes. In particular the method according to the invention may be used to perform physical and chemical reactions and allows for the manufacture of powders not previously obtainable. In addition, the invention also relates to an electrode (4, 4', 5, 10a, 10b) and an apparatus for applying the method according to the invention.
Abstract:
A device for comminuting a liquid, which comprises at least two electrohydrodynamic comminution means (24) arranged so that in use comminutions of opposing polarity are formed which are substantially admixed after formation, so as to provide a comminution having a residual electrical charge.
Abstract:
A nanoparticle coated hydrogel may be formed by a method of electrospraying nanoparticles on to a surface includes providing a drug and polymer combination in solvent to an inner capillary of a coaxial dual capillary spray nozzle. A coating with a drug that releases over time may be provided. Open and closed matrixes may be selectively formed to help modify time release periods.
Abstract:
A device for comminuting a liquid, which comprises at least two electrohydrodynamic comminution means (24) arranged so that in use comminution of opposing polarity are formed which are substantially admixed after formation and a pump (22) for use in the dispensing device.
Abstract:
An apparatus for spraying and inducing an electrostatic charge upon a liquid in excess of 0.8 millicoloumb/kilogram is connectable to a boom fitted to a vehicle, such as an aircraft, having a dc power supply. The apparatus comprises a nozzle constructed from a substantially non-conductive material and includes a spray tip designed to provide a hollow conical spray pattern. A support member extends from the nozzle and supports a charging electrode for inducing an electrostatic charge upon the liquid sprayed through the nozzle. The charging electrode attaches to the support member and is electrically connectable to the dc power supply. The charging electrode includes a cylindrical portion and a plurality of corona discharge members extending inwardly from a distal end of the cylindrical portion adjacent to the spray tip. The charging electrode is positioned to permit the hollow conical spray pattern to pass unhindered therethrough.
Abstract:
The invention relates to a method of manufacturing a dry powder particle, preferably using electro-hydrodynamic spraying, wherein two oppositely charged aerosol streams are contacted. The invention allows for the manufacture of powders having various, controllable compositions and shapes. In particular the method according to the invention may be used to perform physical and chemical reactions and allows for the manufacture of powders not previously obtainable. In addition, the invention relates to an electrode and an apparatus for applying the method according to the invention.
Abstract:
A method of manufacturing a liquid medium containing composite ultrafine particles comprises the steps of preparing a dispersion medium that is a liquid medium in which ultrafine particles of different materials from each other are dispersed, introducing the dispersion medium into first and second chambers, respectively, applying high frequency voltage to the chambers and exciting dispersion media, applying direct current voltage to each dispersion medium on the downstream side than the applying position of the high frequency voltage and electrifying these in different polarities from each other, and aggregating/bonding by means of excitation transfer as well as electrostatically aggregating ultrafine particles each other in the liquid medium in the crashing field by injecting the dispersion media electrified in different polarities from each other through two nozzle sections at a high speed, and crossing/crashing each other.
Abstract:
A comminuting liquid device, a medicament delivery device, an inhaler, a method of providing droplets for delivery to the respiratory tract, a pocket-sized dispenser, and a method of mixing liquids by droplet coalescence. Liquids are subjected to electrical potentials to produce electrically charged droplets for delivery to the upper respiratory tract.
Abstract:
A device for comminuting liquid has a liquid supply with first and second outlets, a first electrohydrodynamic comminuter for subjecting liquid issuing from the first outlet to an electrical potential to cause the liquid to be commrinuted to form a comminution of one polarity and a second electrohydrodynamic comminuter for subjecting liquid issuing from the second outlet to an electrical potential to cause liquid to be commninuted to form a comminution of the opposite polarity. The first and second electrohydrodynamic comminuters are arranged so as to cause substantial admixing of two opposite polarity comminutions.