graphene electrochemical sensor for covid-19 test

covid19 ngene pcr rna sarscov2 antibodies antisense availability bioengineering biosensor chain conductivity detect detectable detection developing diagnosis diagnostic disease electrical electrochemical electrode equipment gold graphene layer nanomaterials nanoplatelets nucleic nucleocapsid oligonucleotide phosphoprotein platform polymerase presence probe rapid reaction reagents research responding sensitivity sensor signal target technique test treatment ultrasensitive viral