Studies on Adsorption of DNA on Functional Ultrathin Films of Cationic Surfactant

Table 1

Estimation of mass per unit area of the adsorbed layer at the different levels of the QCM measurement. The change in frequency is measured with respect to the previous adsorbed layer. The value of 𝐶 for 5 MHz A-T cut quartz wafer is 56.6 Hz 𝜇g⁻¹cm2.

Adsorbed layer	−Δ𝑓, Hz	Δ𝑚, ng/cm2
SAM of ODT	27	477
DOAB	22	389
PBS	250	4417
DNA	600	10601