“…In order to maintain social and economic development, people must intensify efforts on finding highly effective and renewable energy sources. To date, various renewable energy sources from the nature such as wind power, water power, biofuel, tide, terrestrial heat, and sunshine flux, [2][3][4][5][6][7][8][9] have been used to make our world continuously work. In total, these renewable sources take up nearly one eighth of all energy production, 10 and the percentage is expected to keep an impressive annual growth in the next decades.…”