Surface plasmon resonance detection system

US11988602B2 · kind B2 · utility

Assignee

• CARRIER CORPORATION · US

Inventors

• David L. Lincoln · Cromwell, US
• Michael J. Birnkrant · Wethersfield, US
• Jose-Rodrigo Castillo-Garza · Town of East Hartford, US
• Marcin Piech · East Hampton, US
• Catherine Thibaud · Cork, IE
• Michael J. Giering · Bolton, US
• Kishore K. Reddy · Vernon, US
• Vivek Venugopalan · Bound Brook, US

Key dates

• Filing date: May 10, 2019
• Grant date: May 21, 2024
• Expiry date: May 5, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2291/0427
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An example SPR detection system includes a first prism having a first surface adjacent to a first metal layer exposed to a sample gas, and a second prism having a second surface adjacent to a second metal layer exposed to a reference gas. At least one light source is configured to provide respective beams to the first and second surfaces, where each of the beams causes SPR of a respective one of the metal layers. At least one photodetector is configured to measure a reflection property of reflections of the respective beams from the metal layers during the SPR. A controller is configured to determine whether a target gas is present in the sample gas based on a known composition of the reference gas and at least one of an electrical property of the first and second metal layers during the SPR and the reflection property of the metal layers.