Temperature and pressure sensors based on spin-allowed broadband luminescence of doped orthorhombic perovskite structures

US8695430B1 · kind B1 · utility

Assignee

• The United States of America as represented by the Administrator of the National Aeronautics and Space Administration · US

Inventors

• Jeffrey I. Eldridge · Rocky River, US
• Matthew D. Chambers · Goleta, US

Key dates

• Filing date: Nov 23, 2011
• Grant date: Apr 15, 2014
• Expiry date: Oct 12, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G01K11/20
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Systems and methods that are capable of measuring pressure or temperature based on luminescence are discussed herein. These systems and methods are based on spin-allowed broadband luminescence of sensors with orthorhombic perovskite structures of rare earth aluminates doped with chromium or similar transition metals, such as chromium-doped gadolinium aluminate. Luminescence from these sensors can be measured to determine at least one of temperature or pressure, based on either the intense luminescence of these sensors, even at high temperatures, or low temperature techniques discussed herein.