Au-covered hollow urchin-like ZnO nanostructures for surface-enhanced Raman scattering sensing. Issue 47 (20th November 2019)

• Record Type: Journal Article
• Authors: Graniel, Octavio; Iatsunskyi, Igor; Coy, Emerson; Humbert, Christophe; Barbillon, Grégory; Michel, Thierry; Maurin, David; Balme, Sébastien; Miele, Philippe; Bechelany, Mikhael
• Is Part Of: Journal of materials chemistry. Volume 7:Issue 47(2019)
• Page Start: 15066
• Page End: 15073
• Publication Date: 2019-11-20
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c9tc05929f
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : 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. Abstract : 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 −8 M and 10 −6 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.