Journal article
Enhanced dimethyl methylphosphonate (DMMP) detection sensitivity by lead magnesium niobate-lead titanate/copper piezoelectric microcantilever sensors via Young's modulus change
Sensors and actuators. B, Chemical, v 182, pp 147-155
01 Jun 2013
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
We have examined the detection of dimethyl methylphosphonate (DMMP) using lead magnesium niobate-lead titanate (PMN-PT) piezoelectric microcantilever sensor (PEMS) coated with various planar and particulate receptor coatings. We showed that a two-order-of-magnitude enhancement in the flexural-mode resonance frequency shift, Delta f, in DMMP detection that was not accountable for by mass loading alone could be achieved by using a planar Cu2+ adsorbed 11-Mercaptoundecanoic Acid (MUA/Cu2+) or planar 3-mercaptopropyltrimethoxysilane (MPS) coated PEMS. We also showed that the enhancement of Delta f of PEMS was a result of the Young's modulus change in the PMN-PT layer induced by the surface stress generated by the binding of DMMP on a continuous receptor coating. Furthermore, the Young's modulus-change enhanced Delta f in PEMS with a planar receptor coating was shown to be inversely proportional to the product of the average Young's modulus and thickness of the PEMS and independent of the PEMS lateral dimension. We also showed that with an array of three PEMS, one uncoated, one coated with planar MUA/Cu2+ and the other with planar MPS, the detection Delta f pattern for DMMP was distinctively different from those of acetone and ammonia. (C) 2013 Elsevier B.V. All rights reserved.
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Details
- Title
- Enhanced dimethyl methylphosphonate (DMMP) detection sensitivity by lead magnesium niobate-lead titanate/copper piezoelectric microcantilever sensors via Young's modulus change
- Creators
- Qing Zhu - Drexel UniversityWei-Heng Shih - Drexel UniversityWan Y. Shih - Drexel University
- Publication Details
- Sensors and actuators. B, Chemical, v 182, pp 147-155
- Publisher
- Elsevier
- Number of pages
- 9
- Grant note
- CHE-0442100 / National Science Foundation (NSF) Nanotechnology Institute, a University Grant program of the Commonwealth of Pennsylvania's Ben Franklin Technology Development Authority through Ben Franklin Technology Partners of Southeast Pennsylvania grant R01 EB00720 / National Institute of Health (NIH); United States Department of Health & Human Services; National Institutes of Health (NIH) - USA
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- School of Biomedical Engineering, Science, and Health Systems; Materials Science and Engineering
- Web of Science ID
- WOS:000319488800020
- Scopus ID
- 2-s2.0-84875702893
- Other Identifier
- 991019167533804721
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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