Demonstration of zero optical backscattering from single nanoparticles
  We present the first experimental demonstration of zero backscattering from nanoparticles at op- tical frequencies as originally discussed by Kerker et. al. [M. Kerker, D. Wang, and C. Giles, J. Opt. Soc. A 73, 765 (1983)]. GaAs pillars were fabricated on a fused silica substrate and the spectrum of the backscattered radiation was measured in the wavelength range 600-1000 nm. Suppression of backscattering occurred at ~725 nm, agreeing with calculations based on the discrete dipole approximation. Particles with zero backscattering provide new functionality for metamaterials and optical antennas. 
Steven Person, Manish Jain, Zachary Lapin, Juan Jose Saenz, Gary Wicks   and Lukas Novotny
physics.optics cond-mat.mes-hall