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title = {{Ultralong and Defect-Free {GaN} Nanowires Grown by the {HVPE} Process}},  journal = {Nano Letters},  }  @article{Park_2014,  doi = {10.1016/j.cap.2014.08.007},  url = {http://dx.doi.org/10.1016/j.cap.2014.08.007},  year = {2014},  month = {nov},  publisher = {Elsevier {BV}},  volume = {14},  number = {11},  pages = {1437--1442},  author = {Jun Beom Park and Nam-Jung Kim and Yong-Jin Kim and Sang-Hyup Lee and Gyu-Chul Yi},  title = {{Metal catalyst-assisted growth of {GaN} nanowires on graphene films for flexible photocatalyst applications}},  journal = {Current Applied Physics},  }