5 results about "Negatively charged particle" patented technology

This invention discloses an electrophoretic electronic paper, comprising an electrode plate, a capsule, and charged particles. There is only one electrode plate, and the capsule is disposed on one side of the electrode plate. Multiple charged particles are encapsulated within the capsule. Each charged particle includes a positively charged particle and a negatively charged particle that can combine to form a whole. Each of the positively and negatively charged particles is half of the whole, and the positively and negatively charged particles are of different colors. By applying a positive voltage to the electrode plate, the half of the particle with the negative charge will rotate towards the electrode plate, while the half with the positive charge will rotate away from the electrode plate, displaying the color of the negatively charged particle, and vice versa. Furthermore, since the positively and negatively charged particles are encapsulated as a whole, only one type of charged particle is encapsulated within the capsule, allowing for a single encapsulation per capsule. By adjusting the structure of the charged particles, the number of encapsulation steps and electrode plates is reduced, simplifying the manufacturing process and wiring.

Systems and methods are provided for locating hydrocarbons near a wellbore, determining petrochemical properties of a reservoir, and assessing hydrocarbon saturation between reservoirs. The nanoparticles can be positively charged and have properties that make them explode upon contacting crude oil. Sensors can be strategically placed near the wellbore to measure micro tremors caused by nanoparticle explosions. When the fluid is pumped into the wellbore, the fluid is forced into the surrounding rock formations. The fluid can contact crude oil in the rock formations, and the nanoparticles can attract to the fluid / oil interface due to negatively charged particles in the crude oil. When the nanoparticles reach the fluid / oil interface, they can contact the crude oil and explode. The seismic sensors can detect micro tremors caused by the nanoparticle explosions. The seismic sensor readings can be superimposed to identify the location of the crude oil and assess hydrocarbon saturation.

The present disclosure generally relates to the methods of treating solid tumors using negatively charged particles.

This invention discloses a purification device for ultra-high vacuum environments, comprising a cylinder, an isolator, a magnet, and an ionization filament. The cylinder has an open first end and a closed second end. The isolator is disposed within the cylinder, dividing the internal cavity of the cylinder into an ionization cavity near the first end and a collection cavity near the second end along the axial direction of the cylinder. The magnet passes through the isolator and has a perforation connecting the ionization cavity and the collection cavity. The two magnetic poles of the magnet are distributed along a direction perpendicular to the central axis of the cylinder. The ionization filament is at least partially disposed within the ionization cavity for ionizing the gas within the ionization cavity. The ionization filament of this invention can ionize the gas into negatively charged particles and positively charged particles. These negatively charged and positively charged particles, influenced by the magnetic field, undergo spiral motion within the perforation on the magnet and are collected into the collection cavity.

The present application relates to a method and device for removing particles from an ion beam etching system, which comprises a metal grid added to the bottom of the reaction chamber of the ion beam etching system, the grid being connected to a DC power supply to generate a positive voltage, the voltage value of the applied positive voltage being adjusted within 100kv according to the size of the particles to be removed. The material of the metal grid c is a hard metal such as molybdenum or nickel, and the mesh size is less than 5mm. After the etching process is completed, the ion source of the ion beam etching system is disconnected, and the lower electrode is rotated to be perpendicular to the grid c; the neutralizer is turned on to generate a large number of electrons attached to the particles to be removed to make the particles negatively charged; the grid c applies a positive voltage through the DC power supply c, and the negatively charged particles move towards the grid c under the action of the electric field; the particles pass through the mesh of the grid c and are pumped out of the chamber by the molecular pump, so that the particles are quickly and effectively removed, the deposition of particles in the interior of the reaction chamber is prevented, and the production efficiency of the ion beam etching system is improved.