-% First mentions and early research; Pfund
-This phenomenom has been known since the early 20th century, with the first papers on the subject published by Pfund in the 1930s \cite{pfund1930}, \cite{pfund1933}. Pfund established the conditions for formation of metallic-blacks \cite{pfund1930}, and showed that the transmission spectrum of metallic black films is almost zero in visible wavelengths, but increases to a plateau in the far infrared \cite{pfund1933}. More extensive research on the structural and optical properties of these films by Louis Harris and others during the 1940s and 1950s \cite{harris1948}, \cite{harris1952}, \cite{harris1953}.
+Recently there has been much interest in the exploitation of plasmonic effects in nanoscale devices for a bewildering array of applications from improvement of photovoltaic solar cell efficiency \cite{atwater2010,linic2011} to biosensing \cite{maksymov2011}, and even the potential for plasmonic based computing devices \cite{maksymov2010}. %The extremely rapid developement of the field of plasmonics during the last decade has been stimulated by advances in nano-fabrication technology \cite{}.