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Recently, the authors have shown that dielectric/metal composite nanowires exhibit very strong surface enhanced Raman ͑SERS͒ signals when arranged in a random three-dimensional geometry. Since they believe that the intersections of nanowires are critical in generating the high electric fields necessary for this enhancement, they have investigated the effect of crossing geometry under more controlled conditions. Thus, they will discuss the formation of nanowire arrays by in situ growth achieveddoi:10.1116/1.3130150 fatcat:5qce6srv4vc3niwml7gv4fzfp4