Sensitive and specific clinically diagnosis of SARS-CoV-2 employing a novel biosensor based on boron nitride quantum dots/flower-like gold nanostructures signal amplification.

As can be seen the change in current (ΔI), ΔI is equal to the difference between the peak height of ssDNA probe modified electrode and the peak height after hybridization reaction, presented an increasing trend with increasing target sequence concentration and revealed a good linear dependence with the logarithm concentration of ssDNA target in the range from 10 −18 to 10 −9 M ( Fig. 3 B).

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