Inherently Reproducible Fabrication of Plasmonic Nanoparticle Arrays for SERS by Combining Nanoimprint and Copolymer Lithography

Krishnamoorthy, Sivashankar; Sathiyamoorthy, Krishnan; Thoniyot, Praveen; Low, Hong Yee

doi:10.1021/am1011518

Cited by 61 publications

(60 citation statements)

References 60 publications

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“…The SERS signal intensity significantly depends on the molecular characteristics and on the nature of the interaction of the molecules with the substrate. 23 The band at 1624 cm −1 for the MB concentration of 1 μM shifts to the band at 1622 cm −1 for the MB concentration of 1.5 mM in SERS signal. The aggregation effect seems to occur in this case.…”

Section: Sers Characterization Of Ag Nanodot Arraymentioning

confidence: 90%

Ag nanodot array as a platform for surface-enhanced Raman scattering

Jung¹,

Kim²,

Lee³

et al. 2013

J. Nanophoton

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Well-ordered Ag nanodot array on indium-tin-oxide (ITO) glass is adopted as a sensor platform based on surface-enhanced Raman scattering (SERS). SERS has attracted extensive attention in the development of sensitive chemical or biological sensors due to its property of the amplification of electromagnetic fields on a metal nanostructure. The key issue for the applications of SERS is to secure the fabrication technique of a noble metal nanostructured surface. For an SERS-active surface with stability and reproducibility, a Ag nanodot array is fabricated on the ITO glass using a nanoporous alumina mask with uniform through holes. The signal intensity of SERS from methylene blue (MB) adsorbed on the Ag nanodot array showed much stronger scattering than the one from the Ag film of 50-nm thick. The SERS intensity on the Ag nanodot array is consistently enhanced by increased concentration of MB. These results confirm that the Ag nanodot array on ITO glass can be utilized as a stable platform for the sensitive detection of chemical materials based on SERS. © The Authors.Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Section: Sers Characterization Of Ag Nanodot Arraymentioning

confidence: 90%

Ag nanodot array as a platform for surface-enhanced Raman scattering

Jung¹,

Kim²,

Lee³

et al. 2013

J. Nanophoton

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“…The uniform templates obtained using reverse micelle approach is well-suited as masks for nanolithography to produce Si nanopillar arrays. These nanopillar arrays are highly interesting for exploitation as high-resolution molds for nanoimprint lithography (NIL) [44]. NIL is a convenient top-down patterning tool that allows replication of surface relief structures down to sub-10 nm feature sizes present in a mold into the polymer substrate [24,92].…”

Section: Nanorods and Nanodisc Arrays From Nanoimprint Lithography Frmentioning

confidence: 99%

Nanoplasmonic Arrays with High Spatial Resolutions, Quality, and Throughput for Quantitative Detection of Molecular Analytes

Rastogi¹,

Beggiato²,

Adam³

et al. 2020

Nanoplasmonics

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Recent developments in nanoplasmonic sensors promise highly sensitive detection of chemical and biomolecular analytes with quick response times, affordable costs, and miniaturized device footprints. These include plasmonic sensors that transduce analyte-dependent changes to localized refractive index, vibrational Raman signatures, or fluorescence intensities at the sensor interface. One of the key challenges, however, remains in producing such sensors reliably, at low cost, using manufacturing compatible techniques. In this chapter, we demonstrate an approach based on molecular self-assembly to deliver wafer-level fabrication of nanoplasmonic interfaces, with spatial resolutions down to a few nanometers, assuring high quality and low costs. The approach permits systematic variation to different geometric variables independent of each other, allowing the significant opportunity for the rational design of nanoplasmonic sensors. The ability to detect small molecules by SERS-based plasmonic sensing is compared across different types of metal nanostructures including arrays of nanoparticle clusters, nanopillars, and nanorod and nanodiscs of gold.

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“…Due to the difficulty in reproducibly preparing nanostructures, many planar SERS substrates must be synthesized using a variety of sequential complex photolithographic techniques borrowed from the silicon wafer industry. These methods include techniques such as using electron beam deposition (EBD) to create the nanorough surface itself [90,119], using EBD to produce "nanostamps" [120], combining nanoimprint and copolymer lithographic techniques [121], using selfassembled nanoparticles (SAMs) [122,123], and many others using non-spherical particles such as Au-and Agcoated nanorod arrays [124,125]. These techniques, specifically EBD, produce high-resolution nanostructures that are reproducible within a wafer; however, there is a tradeoff with high reproducibility and low enhancement factor (10 2 - 10 4 ) [126].…”

Section: Nanoparticles As Sers Substratesmentioning

confidence: 99%

Surface enhanced Raman spectroscopy (SERS) for in vitro diagnostic testing at the point of care

et al. 2017

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Point-of-care (POC) device development is a growing field that aims to develop low-cost, rapid, sensitive in-vitro diagnostic testing platforms that are portable, selfcontained, and can be used anywhere -from modern clinics to remote and low resource areas. In this review, surface enhanced Raman spectroscopy (SERS) is discussed as a solution to facilitating the translation of bioanalytical sensing to the POC. The potential for SERS to meet the widely accepted "ASSURED" (Affordable, Sensitive, Specific, Userfriendly, Rapid, Equipment-free, and Deliverable) criterion provided by the World Health Organization is discussed based on recent advances in SERS in vitro assay development. As SERS provides attractive characteristics for multiplexed sensing at low concentration limits with a high degree of specificity, it holds great promise for enhancing current efforts in rapid diagnostic testing. In outlining the progression of SERS techniques over the past years combined with recent developments in smart nanomaterials, high-throughput microfluidics, and low-cost paper diagnostics, an extensive number of new possibilities show potential for translating SERS biosensors to the POC.

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Inherently Reproducible Fabrication of Plasmonic Nanoparticle Arrays for SERS by Combining Nanoimprint and Copolymer Lithography

Cited by 61 publications

References 60 publications

Ag nanodot array as a platform for surface-enhanced Raman scattering

Ag nanodot array as a platform for surface-enhanced Raman scattering

Nanoplasmonic Arrays with High Spatial Resolutions, Quality, and Throughput for Quantitative Detection of Molecular Analytes

Surface enhanced Raman spectroscopy (SERS) for in vitro diagnostic testing at the point of care

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