Formation of Ordered and Disordered Dielectric/metal Nanowire Arrays and their Plasmonic Behavior
NAVAL RESEARCH LAB WASHINGTON DC
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We have recently shown that dielectricmetal composite nanowires can exhibit very strong surface enhanced Raman SERS signals, when arranged in a random 3D geometry. Since we believe that the intersections of nanowires are critical in generating the high electric fields necessary for this enhancement, we are investigating this effect under more controlled conditions. Thus, we will discuss the formation of nanowire arrays by in-situ growth, achieved by the control of nanowire materialsubstrate combination, as well as ex-situ nanowire array formation involving e-beam lithography. The effects of nanowire geometry and the resulting SERS behavior show the importance of the dielectricmetal configuration, as well as the importance of nanowire geometry in the SERS effect.
- Electrical and Electronic Equipment