Nanowire arrays for trace vapor preconcentration

US11046579B2 · kind B2 · utility

Assignee

• The Government of the United States of America, as represented by the Secretary of the Navy · US

Inventors

• Braden C. Giordano · Reston, US
• Pehr E. Pehrsson · Alexandria, US
• Kevin J. Johnson · Alexandria, US
• Daniel Ratchford · Alexandria, US
• Christopher Field · Baltimore, US
• Junghoon Yeom · Okemos, US

Key dates

• Filing date: Dec 9, 2019
• Grant date: Jun 29, 2021
• Expiry date: Dec 9, 2039

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01L2924/0002
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Disclosed herein is a method of providing a structure having two electrodes connected by nanowires, exposing the structure to an analyte that can adsorb onto the nanowires, and passing an electrical current through the nanowires to heat the nanowires to desorb the analyte. Also disclosed herein is an apparatus having the above structure; a current source electrically connected to the electrodes, and a detector to detect the analyte.