García-Gancedo, L and Pedrós, J and Zhao, XB and Ashley, GM and Flewitt, AJ and Milne, WI and Ford, CJB and Lu, JR and Luo, JK (2012) Dual-mode thin film bulk acoustic wave resonators for parallel sensing of temperature and mass loading. Biosensors and Bioelectronics, 38. pp. 369-374. ISSN 0956-5663Full text not available from this repository.
Thin film bulk acoustic wave resonator (FBAR) devices supporting simultaneously multiple resonance modes have been designed for gravimetric sensing. The mechanism for dual-mode generation within a single device has been discussed, and theoretical calculations based on finite element analysis allowed the fabrication of FBARs whose resonance modes have opposite reactions to temperature changes; one of the modes exhibiting a positive frequency shift for a rise of temperature whilst the other mode exhibits a negative shift. Both modes exhibit negative frequency shift for a mass load and hence by monitoring simultaneously both modes it is possible to distinguish whether a change in the resonance frequency is due to a mass load or temperature variation (or a combination of both), avoiding false positive/negative responses in gravimetric sensing without the need of additional reference devices or complex electronics. © 2012 Elsevier B.V.
|Uncontrolled Keywords:||FBAR Gravimetric biosensor Piezoelectric biosensor Zinc oxide (ZnO)|
|Divisions:||Div B > Solid State Electronics and Nanoscale Science|
|Depositing User:||Cron Job|
|Date Deposited:||07 Mar 2014 12:05|
|Last Modified:||08 Dec 2014 02:34|