Ferrofluids: nanomotors and nanogenerators F. Gazeau, C. Baravian, J.-C. Bacri, R. Perzynski and M.I. Shliomis Matériaux & Techniques, 89 (2001) 37-39 Published online: 21 June 2017 DOI: 10.1051/mattech/200189120037s