Paper-based tuberculosis diagnostic devices with colorimetric gold nanoparticles
Journal
Science and Technology of Advanced Materials
Journal Volume
14
Journal Issue
4
Pages
044404
Date Issued
2013-03
Author(s)
Abstract
A colorimetric sensing strategy employing gold nanoparticles and a paper assay platform has been developed for tuberculosis diagnosis. Unmodified gold nanoparticles and single-stranded detection oligonucleotides are used to achieve rapid diagnosis without complicated and time-consuming thiolated or other surface-modified probe preparation processes. To eliminate the use of sophisticated equipment for data analysis, the color variance for multiple detection results was simultaneously collected and concentrated on cellulose paper with the data readout transmitted for cloud computing via a smartphone. The results show that the 2.6 nM tuberculosis mycobacterium target sequences extracted from patients can easily be detected, and the turnaround time after the human DNA is extracted from clinical samples was approximately 1 h. © 2013 National Institute for Materials Science.
SDGs
Type
journal article