Department of Biophysics and Pharmacology, Bioscience Center, Federal University of Rio Grande do Norte
Research areas: Bioinformatics, Atomic and Molecular Physics, Biological Chemistry.
Interested in the investigation of the electronic charge transport properties of biological molecules, such as the nucleic acids, proteins and polypeptides, by using quantum chemistry computation. From their modelling, we expect to propose/develop nanobiological devices which could diagnose and evaluate specific diseases like autism, several types of cancer, osteoporosis, different forms of psychosis, etc. Relevant questions will be approached, as the electrical conductivity of the biological molecules, their electronic transmission spectra, quantum wavefunction profiles and how they scatter charge carriers. The calculation of characteristic IxV (current versus voltage) curves, very important for prototyping nanobiodevices involving the coupling of selected biological molecules sandwiched between two electrodes (donor-DN and acceptor-AC, respectively), is expected to be performed by using the density function theory (DFT) quantum chemistry model. Diluted disorder and the role of correlation effects, especially those with symmetrical and anti-symmetrical features, and the non-linear field effects on the quantum wave packet dynamics, will be investigated as well. Furthermore, considering the biological molecules as quasiperiodic arrangements and taking into account that the propagation of their collective modes in quasiperiodic systems implies, among other things, a self-similar fractal energy spectrum that forms a Cantor set, we intend to study their thermodynamic properties by using computational techniques employed in the framework of fractal physics. Overall speaking, our main goal is the production/characterization of a new range of bioelectronic devices that are much smaller, faster and more energy efficient than the present semiconductor crystal-based one, giving rise to a new high-tech revolution based on nanobiostructures.