Surface acoustic wave sensor for refrigerant leakage detection
Abstract
A SAW sensor is optimized for detection of refrigerant leakage in a refrigerant system or other gases, vapors, explosives or chemicals of interest. The SAW sensor includes a piezoelectric substrate; an interdigitated transducer deposited on the piezoelectric substrate, the interdigitated transducer having an input portion that receives input surface acoustic waves and an output portion that emits output surface acoustic waves; and a refrigerant sensor film located between the input portion and the output portion of the interdigitated transducer, the refrigerant sensor film including a sorbent material that is selected for preferential adsorption of a target refrigerant over atmospheric gases. Adsorption of the target refrigerant by the sorbent material results in a frequency shift of a frequency of the output surface acoustic waves relative to a frequency of the input surface acoustic waves. The sorbent material may be a metal organic framework (MOF) material, a covalent organic framework (COF) material, a porous organic cage or organic macrocyles such as calix [n] arene and its related derivatives.
- Inventors:
- Issue Date:
- Research Org.:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Parker-Hannifin Corporation, Cleveland, OH (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 2293760
- Patent Number(s):
- 11796508
- Application Number:
- 17/635,118
- Assignee:
- Parker-Hannifin Corporation (Cleveland, OH)
- DOE Contract Number:
- AC05-76RL01830
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 08/25/2020
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Kunapuli, Raghuit Prasad, Thallapally, Praveen, McGrail, Bernard P., Zhiqun, Deng, Liu, Jian, Li, Huidong, Lu, Jun, and Banerjee, Debasis. Surface acoustic wave sensor for refrigerant leakage detection. United States: N. p., 2023.
Web.
Kunapuli, Raghuit Prasad, Thallapally, Praveen, McGrail, Bernard P., Zhiqun, Deng, Liu, Jian, Li, Huidong, Lu, Jun, & Banerjee, Debasis. Surface acoustic wave sensor for refrigerant leakage detection. United States.
Kunapuli, Raghuit Prasad, Thallapally, Praveen, McGrail, Bernard P., Zhiqun, Deng, Liu, Jian, Li, Huidong, Lu, Jun, and Banerjee, Debasis. Tue .
"Surface acoustic wave sensor for refrigerant leakage detection". United States. https://www.osti.gov/servlets/purl/2293760.
@article{osti_2293760,
title = {Surface acoustic wave sensor for refrigerant leakage detection},
author = {Kunapuli, Raghuit Prasad and Thallapally, Praveen and McGrail, Bernard P. and Zhiqun, Deng and Liu, Jian and Li, Huidong and Lu, Jun and Banerjee, Debasis},
abstractNote = {A SAW sensor is optimized for detection of refrigerant leakage in a refrigerant system or other gases, vapors, explosives or chemicals of interest. The SAW sensor includes a piezoelectric substrate; an interdigitated transducer deposited on the piezoelectric substrate, the interdigitated transducer having an input portion that receives input surface acoustic waves and an output portion that emits output surface acoustic waves; and a refrigerant sensor film located between the input portion and the output portion of the interdigitated transducer, the refrigerant sensor film including a sorbent material that is selected for preferential adsorption of a target refrigerant over atmospheric gases. Adsorption of the target refrigerant by the sorbent material results in a frequency shift of a frequency of the output surface acoustic waves relative to a frequency of the input surface acoustic waves. The sorbent material may be a metal organic framework (MOF) material, a covalent organic framework (COF) material, a porous organic cage or organic macrocyles such as calix [n] arene and its related derivatives.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2023},
month = {10}
}
Works referenced in this record:
Devices and methods to detect and quantify trace gases
patent, May 2016
- Allendorf, Mark D.; Robinson, Alex
- US Patent Document 9,329,154
Gas sensor consisting of surface wave components
patent, October 1998
- Rapp, Michael; Voigt, Achim
- US Patent Document 5,817,922