It is demonstrated that Cu nanostructures fashioned by oblique angle deposition (OAD) of gaseous Cu atoms onto CaF<sub>2</sub> substrates have SEIRA enhancement factors that are close to par with Ag or Au nanostructures formed using vapor deposition at a normal deposition angle. Cu nanostructures grown at normal angle show about x5 in SEIRA enhancement of a <i>p</i>-nitrobenzoic acid (PNBA) monolayer and have a range of over 100 nm in particle size. Conversely, Cu nanostructures deposited by OAD show SEIRA enhancement of approximately x40 and are more uniform with approximate circular shapes averaging 25 nm and spacing less than 10 nm.

Surface-Enhanced infrared absorption studies of copper nanostructures formed by oblique-angle deposition

253rd National Meeting (2017)

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