@article{Wang2006zinc,
  author = {Wang and Song},
  title = {Piezoelectric Nanogenerators Based on Zinc Oxide Nanowire Arrays},
  journal = {Science},
  year = {2006},
  doi = {10.1126/science.1124005},
  url = {https://doi.org/10.1126/science.1124005}
}

@article{Fan2012flexible,
  author = {Fan and Tian and Lin Wang},
  title = {Flexible triboelectric generator},
  journal = {Nano Energy},
  year = {2012},
  doi = {10.1016/j.nanoen.2012.01.004},
  url = {https://doi.org/10.1016/j.nanoen.2012.01.004}
}

@article{Dagdeviren2014power,
  author = {Dagdeviren and Yang and Su and others},
  title = {Conformal piezoelectric energy harvesting and storage from motions of the heart, lung, and diaphragm},
  journal = {Proceedings of the National Academy of Sciences},
  year = {2014},
  doi = {10.1073/pnas.1317233111},
  url = {https://doi.org/10.1073/pnas.1317233111}
}