Improving the sensitivity and accuracy of microcantilever biosensors by a truss structure within air medium

Authors

SOHEYLA ELMI
ZAHRA ELMI

DOI

10.3906/elk-1708-353

Abstract

Early diagnosis is a very fundamental issue in treating most diseases and for this purpose microcantilevers are very effective and reliable devices. In this work, four models of biosensor-based microcantilever are compared and a novel design with high sensitivity, quality factor, and accuracy is proposed. A truss structure is designed near the anchored end of the microcantilever, which improves the sensitivity in order to increase detection accuracy. A linear relationship between resonance frequency shift and masses has been estimated for all the designs. High quality factor, which increases the accuracy of measurement, is taken into account as the other benefit of the proposed design. These microcantilevers can be used as an array for multiple early diagnosis of cancer and moreover these features will improve clinical applications of cantilever sensors for early disease diagnosis.

Keywords

Microcantilever, nanomechanical sensor, label-free, surface stress, air damping, sensitivity, quality factor

First Page

2315

Last Page

2326

Recommended Citation

ELMI, SOHEYLA and ELMI, ZAHRA (2018) "Improving the sensitivity and accuracy of microcantilever biosensors by a truss structure within air medium," Turkish Journal of Electrical Engineering and Computer Sciences: Vol. 26: No. 5, Article 12. https://doi.org/10.3906/elk-1708-353
Available at: https://journals.tubitak.gov.tr/elektrik/vol26/iss5/12