Department of Mechanical Engineering;
Pohang University of Science and Technology(POSTECH);
Pohang 37673;
Republic of Korea;
School of Electrical and Computer Engineering;
Birck Nanotechnology Center;
Purdue University;
West Lafayette;
IN 47906;
USA;
Department of Chemical Engineering;
Pohang University of Science and Technology(POSTECH);
Pohang 37673;
Republic of Korea;