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Approaches to increasing surface stress for improving signal-to-noise ratio of microcantilever sensors
Journal article   Open access   Peer reviewed

Approaches to increasing surface stress for improving signal-to-noise ratio of microcantilever sensors

Hai-Feng Ji and Benjamin D Armon
Analytical chemistry (Washington), v 82(5), pp 1634-1642
01 Mar 2010
DOI: https://doi.org/10.1021/ac901955d
PMID: 20128621
Featured in Collection :   UN Sustainable Development Goals @ Drexel
url
https://europepmc.org/articles/pmc2836585View
Accepted (AM)Open Access (License Unspecified),  Open

Abstract

Surface Properties
Microcantilever sensor technology has been steadily growing for the last 15 years. While we have gained a great amount of knowledge in microcantilever bending due to surface stress changes, which is a unique property of microcantilever sensors, we are still in the early stages of understanding the fundamental surface chemistries of surface-stress-based microcantilever sensors. In general, increasing surface stress, which is caused by interactions on the microcantilever surfaces, would improve the S/N ratio and subsequently the sensitivity and reliability of microcantilever sensors. In this review, we will summarize (A) the conditions under which a large surface stress can readily be attained and (B) the strategies to increase surface stress in case a large surface stress cannot readily be reached. We will also discuss our perspectives on microcantilever sensors based on surface stress changes.

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31 citations in Web of Science
32 citations in Scopus

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Web of Science research areas
Chemistry, Analytical
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