@article {1463668, title = {Immersion Meta-Lenses at Visible Wavelengths for Nanoscale Imaging}, journal = {Nano Letters}, volume = {17}, number = {5}, year = {2017}, pages = {3188-3194}, author = {WT Chen and AY Zhu and M Khorasaninejad and Z Shi and V Sanjeev and F. Capasso} }