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Title: | Piezoresistive microcantilever based lab-on-a-chip system for detection of macronutrients in the soil |
Authors: | Rao, V. Ramgopal |
Keywords: | EEE MEMS Agricultural sensors Microcantilevers |
Issue Date: | Dec-2017 |
Publisher: | Elsevier |
Abstract: | Monitoring of soil nutrients is very important in precision agriculture. In this paper, we have demonstrated a micro electro mechanical system based lab-on-a-chip system for detection of various soil macronutrients which are available in ionic form K+, NO3−, and H2PO4−. These sensors are highly sensitive piezoresistive silicon microcantilevers coated with a polymer matrix containing methyltridodecylammonium nitrate ionophore/ nitrate ionophore VI for nitrate sensing, 18-crown-6 ether for potassium sensing and Tributyltin chloride for phosphate detection. A complete lab-on-a-chip system integrating a highly sensitive current excited Wheatstone’s bridge based portable electronic setup along with arrays of microcantilever devices mounted on a printed circuit board with a liquid flow cell for on the site experimentation for soil test has been demonstrated. |
URI: | https://www.sciencedirect.com/science/article/pii/S0038110117305348 http://dspace.bits-pilani.ac.in:8080/xmlui/handle/123456789/12584 |
Appears in Collections: | Department of Electrical and Electronics Engineering |
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