Large area inverse opal structure
Our laboratory utilizes electrophoretic deposition method to prepare large-area films with the colloidal crystal structure. The mechanism is applying electrophoretic deposition to arrange colloidal particles into closed packed structures, which is known as opal structure or colloidal crystal. Then, we use the film as a template and fill various materials into the void of the colloidal crystal by electrochemical preparation methods or sol-gel methods. After the removal of colloidal crystal, the 3D ordered porous structure called inverse opal structure is formed. Compared with other production methods, the technique in our lab can prepare a quicker, more convenient and highly reproducible solution, and samples still have a long-range and large-area ordered structure. The 3D ordered porous structure has been considered to have research potential and can be applied in electrochemical and biomedical fields requiring high specific surface area and high permeability.
Iridium oxide implantable electrode
In recent years, due to the advance in the development of medical technology, materials used in biomedical devices have attracted more attention.
Biomedical devices for the treatment of neurotransmitter diseases such as Alzheimer’s disease require good electrical stability and biocompatible materials to transmit artificial electrical signals to stimulate nerve tissue. Iridium oxide has quite good electrochemical and biocompatible properties so it can be used in implantable devices with the human-computer interface. In our lab, the iridium oxide film is fabricated by using a wet chemical process with high surface coverage ability, which can be applied in various substrates with more miniature, different materials, and various shapes than conventional vacuum sputtering processes, and is also faster and lower preparing costs.