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[Conference]Microfluidic detection of soil nitrate ions using novel electrochemical foam electrode


Abstract:

This paper reports on a novel sensing interface using composites of graphene foam-titanium nitride nanofibers integrated into a microfluidic sensor for measurement of soil nitrate ions. An in-situ microfabrication approach, based on liquid phase polymerization process, is developed to enable integration of the porous composite into microfluidic channels. This sensor provides an ultralow limit-of-detection of 0.01 mg/L, and a high sensitivity of 683.3 μA mg−1L cm−2 for nitrate ions. The advantageous features of composite, in conjunction with the in-situ integration approach, will enable a promising microfluidic sensor platform to monitor soil ions for nutrient management towards sustainable agriculture.

Published in: Micro Electro Mechanical Systems (MEMS), 2017 IEEE 30th International Conference on MEMS

Date of Conference: 22-26 Jan. 2017

Date Added to IEEE Xplore: 28 February 2017

DOI: 10.1109/MEMSYS.2017.7863448

Md. Azahar Ali

Department of Electrical and Computer Engineering, Iowa State University, Ames, Iowa 50011, USA

Kunal Mondal

Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA

Yifei Wang

Department of Electrical and Computer Engineering, Iowa State University, Ames, Iowa 50011, USA

Navreet K. Mahal

Department of Agronomy, Iowa State University, Ames, Iowa 50011, USA

Michael J. Castellano

Department of Agronomy, Iowa State University, Ames, Iowa 50011, USA

Liang Dong

Department of Electrical and Computer Engineering, Iowa State University, Ames, Iowa 50011, USA

Link: http://ieeexplore.ieee.org/abstract/document/7863448/

#MEMS #graphene #nitrateion #electrode

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