PLUME collaboration: Ultra-light ladders for linear collider vertex detector by Nomerotski, A, Bachynska, O, Baudot, J, Chon-Sen, N, Claus, G, De Masi, R, Deveaux, M, Dulinski, W, Gauld, R, Goffe, M, Goldstein, J, Gregor, I, Hu-Guo, C, Imhoff, M, Koetz, U, Lau, W, Muntz, C, Santos, C, Schrader, C, Specht, M, Stroth, J, Winter, M, Yang, S