Reversible buckling in monolayer of gold nanoparticles on water surface M. K. Bera, M. K. Sanyal, S. Pal, J. Daillant, A. Datta, G. U. Kulkarni, D. Luzet and O. Konovalov EPL, 78 5 (2007) 56003 Published online: 21 May 2007 DOI: 10.1209/0295-5075/78/56003