@article {niu2013enhanced,
	title = {Enhanced performance of flexible ZnO nanowire based room-temperature oxygen sensors by Piezotronic effect},
	journal = {Advanced Materials},
	volume = {25},
	number = {27},
	year = {2013},
	pages = {3701{\textendash}3706},
	publisher = {Wiley Online Library},
	author = {Niu, Simiao and Hu, Youfan and Wen, Xiaonan and Zhou, Yu Sheng and Zhang, Fang and Lin, Long and Wang, Sihong and Wang, Zhong Lin *}
}
