An Operando X-ray Absorption Spectroscopy Study on Sensing Characteristics of Vertically Aligned ZnO Thin Film for Methane Gas Sensors oleh Suriya Duangmanee, Yingyot Poo-arporn, Pattanaphong Janphuang, Pimchanok Leuasoongnoen, Surangrat Tonlublao, Phitsamai Kamonpha, Natawan Saengchai, Narong Chanlek, Chatree Saisombat, Pinit Kidkhunthod, Rungtiva P. Poo-arporn