A highly sensitive surface-enhanced Raman scattering substrate prepared on a hydrophobic surface using controlled evaporation

Rajeev K. Sinha

doi:10.1039/d1ra07871b

A highly sensitive surface-enhanced Raman scattering substrate prepared on a hydrophobic surface using controlled evaporation

Rajeev K. Sinha

Department of Atomic and Molecular Physics, Manipal

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

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.

Original language	English
Pages (from-to)	331-337
Number of pages	7
Journal	RSC Advances
Volume	12
Issue number	1
DOIs	https://doi.org/10.1039/d1ra07871b
Publication status	Published - 21-12-2021

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)

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title = "A highly sensitive surface-enhanced Raman scattering substrate prepared on a hydrophobic surface using controlled evaporation",

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.",

author = "Sinha, {Rajeev K.}",

note = "Funding Information: Financial support from Department of Science and Technology (DST) India under the project Grant No. IDP/BDTD/11/2019 is gratefully acknowledged. Publisher Copyright: {\textcopyright} The Royal Society of Chemistry.",

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doi = "10.1039/d1ra07871b",

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AU - Sinha, Rajeev K.

N1 - Funding Information: Financial support from Department of Science and Technology (DST) India under the project Grant No. IDP/BDTD/11/2019 is gratefully acknowledged. Publisher Copyright: © The Royal Society of Chemistry.

PY - 2021/12/21

Y1 - 2021/12/21

N2 - 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.

AB - 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.

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A highly sensitive surface-enhanced Raman scattering substrate prepared on a hydrophobic surface using controlled evaporation

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