Plasmonic Ratchet Wheels: Switching Circular Dichroism by Arranging Chiral Nanostructures Valev, V. K. ; Smisdom, N. ; Silhanek, A. V. ; De Clercq, B. ; Gillijns, W. ; Ameloot, M. ; Moshchalkov, V. V. ; Verbiest, T. Abstract Publication: Nano Letters Pub Date: November 2009 DOI: 10.1021/nl9021623 Bibcode: 2009NanoL...9.3945V