Biosensors & Themoelectric devices

 Biosensors are generally referred to as devices used for detecting and monitoring diseases. In this case, because biosensors are difficult to directly detect target-biomolecules, the detection method using a labeling substance have been proposed by many research groups; however, this method requires additional processing, cost, and time for preparation. In our study, to solve the productivity problems of biosensors, we are conducting research on FET-based biosensors which are electrochemical measurement methods and have great advantages such as high sensitivity, label-free detection, and high productivity using various materials (ex., organics and oxides).

 Thermoelectric devices can convert thermal energy into electrical energy. As an energy harvesting element that converts wasted waste heat into electricity, research is actively being carried out due to the advantages of increasing energy efficiency throughout the industry. Although thermoelectrical efficiency is dramatically increased through nanomaterial technology such as surface area increase of materials, surface of super-lattice thin film through the increasing of phonon scattering at the boundary. However, contrary to theoretical prediction, changes in electrical conductivity and Seebeck coefficient are limited to technical limitations. In our research, we intend to induce faults by using electrical doping technology inside the thin film to induce multiple phonon scattering and electrical path to maximize thermoelectrical efficiency.