SERS Detection of Rhodamine-6G on Ion Beam Nanostructured Ultra-Thin Gold (Au) Films: A Correlation between Fractal Growth, Water Contact-Angle and Raman Intensity

Author:

Jasrotia Priya,Priya Bhanu,Kumar Raj,Bishnoi Priyanka,vij Ankush,Kumar TanujORCID

Abstract

SERS (Surface Enhanced Raman Scattering) detection of rhodamine-6G on gold nanostructures (Au–NS) of various sizes under ion beam irradiation is presented. On a glass substrate, Au thin films of different thicknesses (∼2, 3 and 5 nm) were deposited by thermal evaporation. Subsequent irradiation using 10 keV Ar+ at different fluences has been able to modify the size of Au-NS. Ion beam-induced sputtering and diffusion processes control the formation of Au-NS. The reduction in Au content during ion beam sputtering is confirmed by Rutherford Backscattering Spectroscopy (RBS), which also validates tuning the size and structures of Au-NS. The wettable characteristics of Au-NS surfaces are controlled by two competing statistical factors of sputtering and surface diffusion. A correlation between the water contact angle, rms roughness, and the detection of rhodamine-6G (R6G) by SERS is presented. The current study sheds light on the mechanism(s) of SERS chemical detection for wider metallic surfaces.

Publisher

The Electrochemical Society

Subject

Electronic, Optical and Magnetic Materials

Cited by 6 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Synthesis of noble metal nanostructures by ion beam irradiation and their characterization;Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms;2024-09

2. Ion beam-induced nanoripples patterns for SERS based saliva analysis to detect oral cavity cancer;Radiation Effects and Defects in Solids;2024-06-28

3. SERS detection of Rhodamine-6G on Au/V2O5/Au under ion irradiation;Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms;2024-06

4. Surface nanostructuring and wettability of low energy Ar+ irradiated Au/V2O5/Au multilayer system for SERS detection of rhodamine-6G;Radiation Physics and Chemistry;2024-02

5. Low energy ion irradiation induced Au/Ag multilayer nanostructured substrates for SERS-based molecular sensing;Optical Materials;2024-02

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