Patent ID: 7390384
Filing Date: 2008-06-24
Classification: A61N,B01J,B03C,B82Y,H01T

Abstract:
1. A device for generating negatively charged nanoparticles, which is comprised of a power supply, a casing, a controller and an electron-emitter, the power supply is connected with the electron-emitter and the controller respectively; characterized in that the electron-emitter is an electron supermicroemitter, dimensions of an emitting part of the electron supermicroemitter being smaller than or equal to a micron level; there is only one electrode with one potential in the electron supermicroemitter; the electron supermicroemitter emits electrons by means of tunneling effect, and the emitted electrons combine with the nanoparticles in air to form negatively charged nanoparticles; the potential of the electron supermicroemitter to the ground is controlled in a range of −2 kV to −29 kV.