Enhancement of thermoelectric properties of gamma-graphyne nanoribbons with edge modulation Caihua Wang, Tao Ouyang, Yuanping Chen and Jianxin Zhong Eur. Phys. J. B, 88 5 (2015) 130 Published online: 25 May 2015 DOI: 10.1140/epjb/e2015-60153-y