Journal article
A novel method for monitoring mass-change response of piezoelectric-excited millimeter-sized cantilever (PEMC) sensors
Sensors and actuators. B, Chemical, v 143(1), pp 144-151
2009
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Abstract
We show that monitoring impedance at a fixed frequency near resonant frequency of a piezoelectric-excited millimeter-sized cantilever (PEMC) sensor provides equivalent measurement as the conventional approach of monitoring resonant frequency. Two sensing experiments are used to validate the proposed approach: density change and detection of a pathogen (
E. coli O157:H7). The impedance approach is feasible because PEMC sensors exhibit modest
Q-values of 30–60 at ∼900
kHz and typical biosensing response falls well below 5
kHz, a frequency band near resonant frequency where impedance is a linear function of frequency. The simpler impedance approach lends itself to high throughput applications where large number of sensor responses is to be monitored simultaneously.
Metrics
Details
- Title
- A novel method for monitoring mass-change response of piezoelectric-excited millimeter-sized cantilever (PEMC) sensors
- Creators
- Sen XuRaj Mutharasan
- Publication Details
- Sensors and actuators. B, Chemical, v 143(1), pp 144-151
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemical and Biological Engineering
- Web of Science ID
- WOS:000272376800023
- Scopus ID
- 2-s2.0-71849085528
- Other Identifier
- 991014878309704721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Chemistry, Analytical
- Electrochemistry
- Instruments & Instrumentation