"This cloak is able to conceal a macroscopic object with a maximum height of 2 mm, larger than 3500 free-space-wavelength, inside a transparent liquid environme

"This cloak is able to conceal a macroscopic object with a maximum height of 2 mm, larger than 3500 free-space-wavelength, inside a transparent liquid environment" The PDF is downloadable from here: http://arxiv4.library.cornell.edu/abs/1012.2783v1 http://arxiv4.library.cornell.edu/abs/1012.2783v1 The setup is only proven with a laser from one direction with a specific green pattern. From page 8: "The observer in all cases is assumed to have a fixed height of h"