A highly sensitive surface-enhanced Raman scattering substrate prepared on a hydrophobic surface using controlled evaporation. Issue 1 (21st December 2021)

• Record Type: Journal Article
• Authors: Sinha, Rajeev K.
• Is Part Of: RSC advances. Volume 12:Issue 1(2022)
• Page Start: 331
• Page End: 337
• Publication Date: 2021-12-21
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d1ra07871b
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : In the present work, we report the fabrication of a surface-enhanced Raman spectroscopy (SERS) substrate on a simple and easily fabricable hydrophobic surface. Abstract : In the present work, we report the fabrication of a surface-enhanced Raman spectroscopy (SERS) substrate on a simple and easily fabricable hydrophobic surface. The substrates are prepared by slow and fast evaporation of a droplet of silver nanoparticle suspension in water. The corresponding identifiers for two substrates are "s_evp" and "f_evp" respectively. It is found that the dried spot size is small on s_evp compared to that on f_evp. This also minimizes the coffee stain effect and enriches the spot in a better way on s_evp compared to f_evp. Consequently, using SERS experimentation on our lab-built setup, concentration as low as 2.5*10 −12 M of rhodamine 6G molecules was detected on s_evp compared to 2.5 × 10 −10 M on f_evp. The proposed s_evp SERS substrate is much easier to fabricate and easy to use compared to super-hydrophobic SERS substrates.