Flow control method and apparatuses

US10526218B2 · kind B2 · utility

Assignees

• The Board of Trustees of the Leland Stanford Junior University · US
• THE UNIVERSITY OF OTTAWA · CA

Inventors

• Kee-Hyun Paik · Milpitas, US
• Yang Liu · Iowa City, US
• Vincent Tabard-Cossa · Ottawa, CA
• Robert W. Dutton · Palo Alto, US

Key dates

• Filing date: Oct 1, 2013
• Grant date: Jan 7, 2020
• Expiry date: Apr 19, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N33/48721
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Aspects of the present disclosure are directed to the flow of analytes, particles or other materials. As consistent with one or more embodiments described herein, an apparatus includes a membrane having one or more pores in a membrane. First and second electrodes facilitate electrophoretic flow of analytes through the pore, and a third electrode controls movement of the particles in the pore by modulating the shape of an electric double layer adjacent sidewalls of pore. This modulation controls the strength of an electroosmotic field that opposes the electrophoretic flow of the analytes via the pore.