Surface enhanced Raman scattering (SERS)-based next generation commercially available substrate: physical characterization and biological application

Hankus, Mikella E.; Stratis‐Cullum, Dimitra N.; Pellegrino, Paul M.

doi:10.1117/12.893842

Cited by 29 publications

(27 citation statements)

References 19 publications

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“…However, applications to real-world situations remain challenging, mainly due to difficulties in fabricating the highly sensitive and spectrally/physically reproducible SERS substrates. 2 This paper focuses on SERS for amorphous materials, even though SERS measurements are usually intended for the identification of molecules and can even achieve single molecule detection. 3 Ultimately, the aim is to improve the sensitivity of distributed fiber optic sensors.…”

Section: Introductionmentioning

confidence: 99%

Surface-enhanced Raman scattering of amorphous TiO2 thin films by gold nanostructures: Revealing first layer effect with thickness variation

Degioanni

Jurdyc

Bessueille

et al. 2013

Journal of Applied Physics

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In this paper, amorphous titanium dioxide (TiO2) thin films have been deposited on a commercially available Klarite substrate using the sol-gel process to produce surface-enhanced Raman scattering (SERS). The substrate consists of square arrays of micrometer-sized pyramidal pits in silicon with a gold coating. Several thin TiO2 layers have been deposited on the surface to study the influence of film thickness. Ultimately, we obtained information on SERS of an amorphous TiO2 layer by gold nanostructures, whose range is less than a few nanometers. Mechanisms responsible for the enhancement are the product of concomitant chemical and electromagnetic effects with an important contribution from plasmon-induced charge transfer.

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Section: Introductionmentioning

confidence: 99%

Surface-enhanced Raman scattering of amorphous TiO2 thin films by gold nanostructures: Revealing first layer effect with thickness variation

Degioanni

Jurdyc

Bessueille

et al. 2013

Journal of Applied Physics

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“…Other types of SERS substrates have been reported to produce enhancement factors of up to 10 11 [33]. The EF for Klarite R also seems rather low considering this type of SERS substrate is capable of producing EFs in the range of 10 6 [35], Rodrigues et al attribute this low enhancement to the fact that there is no strong hot spots in the SERS mapped area which leads to lower enhancements being measured. In order to better understand how to obtain SERS performance, it is a good start to understand the local electric fields of a surface; computational electrodynamics is often utilised to understand this.…”

Section: Simulations Of the Sers Effectmentioning

confidence: 99%

Surface Enhanced Raman Scattering Substrates Made by Oblique Angle Deposition: Methods and Applications

Chu

Song

et al. 2017

Coatings

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Surface Enhanced Raman Spectroscopy presents a rapid, non-destructive method to identify chemical and biological samples with up to single molecule sensitivity. Since its discovery in 1974, the technique has become an intense field of interdisciplinary research, typically generating >2000 publications per year since 2011. The technique relies on the localised surface plasmon resonance phenomenon, where incident light can couple with plasmons at the interface that result in the generation of an intense electric field. This field can propagate from the surface from the metal-dielectric interface, so molecules within proximity will experience more intense Raman scattering. Localised surface plasmon resonance wavelength is determined by a number of factors, such as size, geometry and material. Due to the requirements of the surface optical response, Ag and Au are typical metals used for surface enhanced Raman applications. These metals then need to have nano features that improve the localised surface plasmon resonance, several variants of these substrates exist; surfaces can range from nanoparticles in a suspension, electrochemically roughened electrodes to metal nanostructures on a substrate. The latter will be the focus of this review, particularly reviewing substrates made by oblique angle deposition. Oblique angle deposition is the technique of growing thin films so that the material flux is not normal to the surface. Films grown in this fashion will possess nanostructures, due to the atomic self-shadowing effect, that are dependent mainly on the deposition angle. Recent developments, applications and highlights of surface enhanced Raman scattering substrates made by oblique angle deposition will be reviewed.Keywords: surface enhanced Raman spectroscopy; coatings on polymer; special substrate materials; metal coatings; deposition, characterisations and applications of sculptured and textured thin films

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“…4a shows a SEM image of this substrate, which is formed by etching pyramidal holes in silicon substrate and covering the repetitive pattern with gold. It is believed that the hot spots occur at the bottom of the holes [25]. Since the samples in this paper are also covered with gold, it was considered reasonable to use Klarite for comparison and evaluation of the fabricated SERS substrates.…”

Section: Raman Spectroscopymentioning

confidence: 99%

“…Solid nanostructured substrates have also been widely used for SERS studies because they exhibit advantages regarding reproducibility and field applications. They are usually obtained using photolithographic or micro-engineering techniques, followed by covering with thin films of the SERS-active metals [22][23][24] commercially available brand [25][26][27]. Another approach is to fabricate solid SERS substrates by bottom-up methods.…”

Section: Introductionmentioning

confidence: 99%

Sputtered gold-coated ITO nanowires by alternating depositions from Indium and ITO targets for application in surface-enhanced Raman scattering

Setti

Mamián-López

Pessoa

et al. 2015

Applied Surface Science

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Surface enhanced Raman scattering (SERS)-based next generation commercially available substrate: physical characterization and biological application

Cited by 29 publications

References 19 publications

Surface-enhanced Raman scattering of amorphous TiO2 thin films by gold nanostructures: Revealing first layer effect with thickness variation

Surface-enhanced Raman scattering of amorphous TiO2 thin films by gold nanostructures: Revealing first layer effect with thickness variation

Surface Enhanced Raman Scattering Substrates Made by Oblique Angle Deposition: Methods and Applications

Sputtered gold-coated ITO nanowires by alternating depositions from Indium and ITO targets for application in surface-enhanced Raman scattering

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