TY - JOUR TI - Generation of multiple focal hole segment by tight focusing of azimuthally polarized double ring shaped beam AU - N. Veerabagu Suresh AU - R.C. Sarasvathi AU - Haresh M. Pandya AU - K.B. Rajesh PY - 2013 DO - 10.13074/jent.2013.02.nciset36 T2 - Journal of Environmental Nanotechnology JF - Journal of Environmental Nanotechnology JA - J. Environ. Nanotechnol. SP - 37 EP - 41 VL - 2 IS - (Special Issue) PB - Institute for Environmental Nanotechnology ER -