Fabrication of capillary force induced DNA template Ag nanopatterns for sensitive and selective enzyme-free glucose sensors

Shakir, Sehar and Saravanan, Jayachandran and Rizan, Nastaran and Jusice Babu, K. and Aziz, Md. Abdul and Phang, Siew Moi and Periasamy, Vengadesh and Gnana Kumar, George Peter (2018) Fabrication of capillary force induced DNA template Ag nanopatterns for sensitive and selective enzyme-free glucose sensors. Sensors and Actuators B: Chemical, 256. pp. 820-827. ISSN 0925-4005

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Official URL: https://doi.org/10.1016/j.snb.2017.10.021

Abstract

The self-patterned silver (Ag) nanowires on Indium Tin Oxide (ITO) were developed and exploited as the enzyme-free sensor probes for glucose detection. Deoxyribonucleic acid (DNA) template increased the capillary force channels of Ag and facilitated the homogeneous and high mobility of Ag-DNA toward the scribe via the coffee ring effect. The subsequent removal of DNA template from Ag-DNA/ITO through the enzymatic hydrolysis process led to the formation of Ag nanowires on ITO. Under alkaline conditions, Ag nanopatterns developed on ITO realized the considerable enzyme-free glucose sensor performances. The fabricated sensor system is reproducible and stable and was pertained with an analysis of spiked human blood serum, where it provided excellent recoveries. Thus these findings have not only showered insights on the self assembly of Ag nanoparticles without the exploitation of any surfactants and harsh conditions but have also provided the fundamental perceptive on the influences of self-assembled nanowires in enzyme free glucose sensor applications.

Item Type: Article
Uncontrolled Keywords: Base pairs; Deoxyribonucleic acid templating; Enzyme-free glucose sensors; Nanopatterns; Scribing; Sensitivity
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Q Science > QH Natural history
Divisions: Faculty of Science > Dept of Physics
Faculty of Science > Institute of Biological Sciences
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 18 Mar 2019 03:58
Last Modified: 18 Mar 2019 03:58
URI: http://eprints.um.edu.my/id/eprint/20714

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