Silicon-nanocrystal-based multiple-tunnel junction devices obtained by a combination of V-groove and ion beam synthesis techniques P. Normand, E. Kapetanakis, D. Tsoukalas, A. Tserepi, E. Tsoi, K. Beltsios, K. Aidinis, S. Zhang, J.van den Berg Microelectronic Engineering 57-58, 1003 (2001)