Shape-controlled percolation transition in 2D random packing of asymmetric dimers Youngkyu Han, Juncheol Lee, Siyoung Q. Choi, Myung Chul Choi and Mahn Won Kim EPL, 109 6 (2015) 66002 Published online: 25 May 2015 DOI: 10.1209/0295-5075/109/66002