Fig. 3. (A) Normalized THz transmission spectra of bare metamaterial, blank control, pure RCA products, and AuNP–RCA product complexes. (B) Metamaterial frequency shifts (Δf) of three of those samples. One pM of synthetic S. aureus DNA sequence was used to obtain the RCA products and AuNP–RCA product complexes. The error bars indicate the standard deviation (n = 3 in each case).
