Articles | Volume 6, issue 1
J. Sens. Sens. Syst., 6, 87–96, 2017

Special issue: Sensors and Measurement Systems 2016

J. Sens. Sens. Syst., 6, 87–96, 2017

Regular research article 13 Feb 2017

Regular research article | 13 Feb 2017

The concept of thin film bulk acoustic resonators as selective CO2 gas sensors

Romy Hoffmann et al.

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Cited articles

Apte, M. G.: A Review of Demand Control Ventilation, LBNL-60170 Report, Lawrence Berkeley National Laboratory, Berkeley, CA, USA, 2006.
Bollini, P., Didas, S. A., and Jones, C. W.: Amine-oxide hybrid materials for acid gas separations, J. Mater. Chem., 21, 15100–15120,, 2011.
Chao, C. Y. H. and Hu, J. S.: Development of a dual-mode demand control ventilation strategy for indoor air quality control and energy saving, Build. Environ., 39, 385–397,, 2004.
Choi, S., Drese, J. H., and Jones, C. W.: Adsorbent materials for carbon dioxide capture from large anthropogenic point sources, ChemSusChem, 2, 796–854,, 2009.
Haeusler, A. and Meyer, J. U.: A novel thick film conductive type CO2 sensor, Sensor. Actuat. B-Chem., 34, 388–395,, 1996.
Short summary
Carbon dioxide is a main greenhouse gas and a gas that well-represents air quality. Therefore, it is important to monitor the CO2 concentration in air. Creating an affordable and reliable CO2 sensor is the purpose of this paper. Using a mass-sensitive acoustic sensor (FBAR) we can detect increasing CO2 concentration by a mass increase on the sensor surface. As humidity changes often interfere with these signals the selection of CO2 over humidity changes is another topic addressed in this paper.