Mettela, Gangaiah; Boya, Radha; Singh, Danveer; KUMAR, G. V. PAVAN; Kulkarni, G. U.
(Nature Publishing Group, 2013-05)
Focusing light at sub-wavelength region opens up interesting applications in optical sensing and imaging beyond the diffraction limit. In the past, tapered Au wires with carved gratings have been employed to achieve ...