Properties of Assembled Nanoparticles of Different Shapes

1. Properties of Assembled Nanoparticles of Different Shapes Daniel C. Ralph, Cornell University, ECCS - 0335765 30 nm 30 nm 20 nm 30 nm 30 nm 20 nm Interparticle Separation Arrays of nanorods, nanoprisms and nanorings were fabricated on the JEOL JBX-9300FS EBL system. The optical properties of the various systems were then investigated spectroscopically. • The plot shows the extinction spectra for nanoprisms at five different tip-to-tip interparticle separations. As the distance between the particles decreases, the peak redshifts. This indicates that the optical properties of ensembles of metallic nanoparticles depends on their individual shapes and sizes as well their particle separation. Student: Rachel Givens, PI: Mostafa El-Sayed-Chemistry, Georgia Tech Work performed at the Georgia Tech Nanotechnology Research Center