Control of a DNA Based Piezoelectric Biosensor
Samira Fathizadeh, S. Behnia
Abstract
The piezoelectric biosensor is small, light-weight, and its implementation and use are low-cost. Therefore, sensitivity, selectivity, and challenges of a DNA based piezoelectric sensor are discussed. The variation of the flowing electrical current through DNA concerning the applied force confirms the piezoelectric property of DNA. DNA chain can behave as a sensor to detect some deterministic drives via the variation of electrical current as an output signal. The characteristic peaks in the current–voltage characteristic diagram of poly(CG) appeared at V = 0.8 and 3.4 V for F = 0.3 and 0.01 pN, respectively can determine different sensing behaviors of DNA chains. The distinguishable peaks of the electrical current can be predicted via the multifractal analysis. The analogues heat capacity in multifractal DNA shows a peak position that resembles a phase transition at the critical point. So, one can design a piezoelectric biosensor with specific performance using the appropriate parameters.