- Au-covered hollow urchin-like ZnO nanostructures for surface-enhanced Raman scattering sensing doi link

Auteur(s): Graniel Octavio, Iatsunskyi Igor, Coy Emerson, Humbert Christophe, Barbillon Grégory, Michel T., Maurin D., Balme Sébastien, Miele Philippe, Bechelany Mikhael

(Article) Publié: Journal Of Materials Chemistry C, vol. 7 p.15066-15073 (2019)
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Ref HAL: hal-02537077_v1
DOI: 10.1039/C9TC05929F
WoS: 000506890600029
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Au-covered hollow urchin-like ZnO nanostructures were prepared with controlled size by combining nanosphere lithography (NSL), atomic layer deposition (ALD), electrodeposition, and electron beam (e-beam) evaporation. The optimal Au film thickness for sensing applications was determined by measuring the surface-enhanced Raman scattering (SERS) intensities of the substrates. Furthermore, the sensing performances of these hybrid nanostructures have been investigated by using chemical and biological molecules: thiophenol and adenine, respectively. Limits of detection (LOD) of 10 À8 M and 10 À6 M were found for the detection of thiophenol and adenine, respectively. Additionally, the excellent uniformity and batch-to-batch reproducibility of the substrates make them excellent candidates for reliable SERS sensing and biosensing.