Biosensor and related method

US7306924B2 · kind B2 · utility

Assignee

• Purdue Research Foundation · US

Inventors

• Rafael Gomez · Cupertino, US
• Rashid Bashir · Champaign, US
• Arun K. Bhunia · West Lafayette, US
• Michael R. Ladisch · West Lafayette, US
• J. Paul Robinson · West Lafayette, US

Key dates

• Filing date: Jun 26, 2002
• Grant date: Dec 11, 2007
• Expiry date: Oct 15, 2023

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N33/5438
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for collecting a microbiological substance utilizes a micro fabricated biochip having a collection chamber. A fluid sample containing a microbiological entity of interest is delivered to the collection chamber in the biochip. Then a non-uniform electric field is generated in the collection chamber, to retain the microbiological entity of interest in the collection chamber. The microbiological entity is retained through dielectrophoresis induced by the energization of the electrodes by a periodically applied, alternating current.