Research


< Neural interface >

A neural interface is a communication system between a neural tissue in a body and an external biomedical electronic device for replacing organ function, curing diseases, or regenerating tissues. While most biomedical electronic devices are operated by electrical signals, the biological cells are excited only by ionic potentials. Thus, the neural interfaces should be able to relay the electrochemical signals between a stiff dry electrode of the device and a soft wet tissue of the body. Our research aims are overcoming current technological challenges of implantable neural interfaces, which include 1) improving electrochemical functionality, 2) designing biocompatible materials and structures, 3) enhancing performance stability when implanted, and 4) ultimately recovering lost tissue functions or curing diseases.



< Nanomaterials >

Nanomaterials can provide unique physicochemical property requirements for wide ranges of applications such as electrical, mechanical, optical, thermal, chemical, and biomedical applications as well as biomimetic superior property reproductions. In our laboratory, various nanomaterials from carbons, matals, and ceramics, which include nanoparticles, nanowires, nanotubes, and nanoplatelets, are prepared for further material processing as well as for the unique material itself.



< Nanostructure & Microstructure >

Nanoscale hierarchical structural controllability can realize unprecedented levels of material properties. The tools for molecular level organization of materials in our laboratory include layer-by-layer assembly, electrochemical deposition, freeze-drying, supercritical-drying, sputtering, template based complex structures, and surfactant enhanced self-assembly/directed-assembly techniques.



< Biomaterials and Tissue engineering >

Tissue engineering techniques in our laboratory are aimed to regenerate damaged functions and structures of tissues, particularly for peripheral nerve systems and for sensory and motor organs. Our techniques include designing biomimetic extracellular matrix, preparing biodegradable biocompatible functional materials, and engineering cellular bioactive components.