Label-Free Dengue Detection Utilizing PNA/DNA Hybridization Based on the Aggregation Process of Unmodified Gold Nanoparticles

<table>Absorption spectra for the sensitivity of colorimetric assay based on the unmodified AuNPs in the presence of 12 <i>μ</i>M PNA probe. The corresponding spectra are referring to the 1 : 0.1, 1 : 0.5, and 1 : 1, respectively. Red line is the spectra for AuNPs as reference. Insert is the calibration graph for dengue virus DNA target at different concentrations.</table>

Journal of Nanomaterials

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Figure 2: Label-Free Dengue Detection Utilizing PNA/DNA Hybridization Based on the Aggregation Process of Unmodified Gold Nanoparticles 