A Raman imaging and sensing apparatus is described. The apparatus employs a nanoantenna structure which includes a metal tip spaced from a metal surface or particle. A light beam impinges upon the nanoantenna and causes plasmon resonance. The plasmon resonance excites a sample resulting in dramatically...http://www.google.com.au/patents/US20040174521?utm_source=gb-gplus-sharePatent US20040174521 - Raman imaging and sensing apparatus employing nanoantennas
