Johns Hopkins University

Donglei Fan

Robert Cammarata

Chia-Ling Chien

Chia-ling Chien

Danru Qu

Su Chih Chi

Stephen L Farias

A continuous flow particle separation system for separating metallic and nonmetallic particles from a mixed-particle suspension includes a fluid channeling component defining an input channel and first and second output channels fluidly connected to the input channel at a bifurcated junction, a first electrode and a second electrode arranged proximate the input channel at least partially prior to the bifurcated junction, and an alternating current (AC) electric power source electrically connected to the first and second electrodes. The first and second electrodes have shapes configured to provide a spatially-gradient electric field across the input channel, and the AC electric power source is configured to provide an AC electric potential to the first and second electrodes to cause a separation of the metallic and nonmetallic particles by dielectrophoresis due to a difference in dielectrophoretic forces imposed on the metallic particles relative to those of the nonmetallic particles such that first output fluid flow in the first output channel has an enriched concentration of metallic particles and second output fluid flow in the second output channel has an enriched concentration of nonmetallic particles relative to the mixed-particle suspension in said input channel.

Systems and methods for separating metallic and nonmetallic particles in a mixed-particle suspension

A method for assembling multi-component nano-structures that includes dispersing a plurality of nano-structures in a fluid medium, and applying an electric field having an alternating current (AC) component and a direct current (DC) component to the fluid medium containing the plurality of nano-structures. The electric field causes a first nano-structure from the plurality of nano-structures to move to a predetermined position and orientation relative to a second nano-structure of the plurality of nano-structures such that the first and second nano-structures assemble into a multi-component nano-structure.

System and method for precision transport, positioning, and assembling of longitudinal nano-structures

Growing community of inventors

San Jose, CA, United States of America

Donglei Fan