Biochemical sensors using carbon nanotube arrays

US7939734B1 · kind B1 · utility

Assignee

• The United States of America as Represented by the Administrator of the National Aeronautics and Space Administration (NASA) · US

Inventors

• Jun Li · Norwood, US
• Meyya Meyyappan · San Jose, US
• Alan M. Cassell · Campbell, US

Key dates

• Filing date: Jun 14, 2004
• Grant date: May 10, 2011
• Expiry date: Jun 14, 2024

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S977/953
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Method and system for detecting presence of biomolecules in a selected subset, or in each of several selected subsets, in a fluid. Each of an array of two or more carbon nanotubes (“CNTs”) is connected at a first CNT end to one or more electronics devices, each of which senses a selected electrochemical signal that is generated when a target biomolecule in the selected subset becomes attached to a functionalized second end of the CNT, which is covalently bonded with a probe molecule. This approach indicates when target biomolecules in the selected subset are present and indicates presence or absence of target biomolecules in two or more selected subsets. Alternatively, presence of absence of an analyte can be detected.