My field is material physics which can be either synthetic materials and biomaterials. Synthesis materials; from transition metal and their oxide, transparent conductive oxide, and polymer. Electronic and optical properties analyzed by using XPS and REELS spectroscopy. Biomaterials is new topic that has been developed. Use of natural materials as activated carbon from coconut shell as supercapacitor material which can be observed molecular and structure properties by using FTIR and XRD.