Glancing angle deposited gold nanohelix arrays on smooth glass as three-dimensional SERS substrates

Jen, Yi‐Jun; Huang, Jyong-Wei; Liu, Wei-Chih; Chan, San; Tseng, Chien-Hoa

doi:10.1364/ome.6.000697

Cited by 27 publications

(20 citation statements)

References 14 publications

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“…However, it was also material dependent as Ag did not behave like Au under the same deposition conditions. In their more recent 2016 study, the lower the spin rate used, the more hotspots would be supported as the pitch and helical radius increases [15]. Their 3D FDTD simulations of three structures, each based on the resultant nanohelix deposited at their respective rotation speeds, support this as the |E/E i | was found to be greatest for the slowest rotation.…”

Section: Geometries Of Oad Derived Sers Substratesmentioning

confidence: 92%

“…There have yet to be temperature-SERS studies done with other substrates, such as polymers, that have significantly different thermal conductivities to typical silicon/glass substrates. While changes in geometries were observed as a temperature dependence during oblique angle depositions, there is little in literature that studies this temperature dependence with other nanostructures [15,53], perhaps this will be a new area that will be expanded in the near future.…”

Section: Temperature Dependent Oblique Angle Depositionmentioning

confidence: 99%

“…There have been numerous studies into the effects of size, shape and material on LSPR [10,11], however, covering these studies is outside the scope of this review. In order to fabricate nanostructures with large LSPR, several approaches to SERS surfaces include: colloidal nanoparticles [12,13], roughened electrodes [3,14] and nanostructures on a substrate (such as glass [15,16] or polymers [17][18][19]). This review will explore latter type of SERS substrates, particularly those made by oblique angle deposition (OAD).…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Geometries Of Oad Derived Sers Substratesmentioning

confidence: 92%

Section: Temperature Dependent Oblique Angle Depositionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Chu

Song

et al. 2017

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“…Noble metal nanoparticles with light-induced excitations, known as localized surface plasmon resonances (LSPRs) [1], have been widely exploited in optical nanoantennas [2], energy harvesting devices [3], ultrafast optical switching technologies [4,5], data storage [6], surface-enhanced Raman scattering [7], sensor applications [8], and biophotonics [9]. These resonances provide extremely large, highly localized electric field enhancements in the immediate vicinity of the metal nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Tunable Plasmonic Resonances in TiN Nanorod Arrays

Jen

Chan

Liao³

et al. 2019

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In this work, titanium nitride (TiN) nanorod arrays were fabricated using glancing angle deposition in a magnetron sputtering system. The deposition parameters, including the bias on the substrate and the flow rate of nitrogen, were varied to deposit various TiN nanorod arrays. Before glancing angle deposition was conducted, uniform TiN films were deposited and their permittivity spectra, for various deposition parameters, were obtained. The effect of the deposition parameters on the morphology of the nanorods is analyzed here. The polarization-dependent extinctance spectra of TiN nanorod arrays were measured and compared. Extinction, which corresponds to the longitudinal mode of localized surface plasmon resonance, can be significantly changed by tuning the N2 flow rate and substrate bias voltage during deposition.

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“…A metal nanohelix array can reportedly be obliquely deposited on a seeded substrate by spinning the cooled substrate during deposition32. Our recent work has shown that silver and gold nanohelix arrays can be obliquely deposited on a smooth substrate at with an optimal spin rate with respect to the deposition rate3334. Without patterned substrates, nanohelices are grown by self-shadowing; the nanohelices are distributed densely, and rod-to-rod gaps with widths of less than 10 nm are randomly and densely distributed within the array.…”

mentioning

confidence: 99%

Densely packed aluminum-silver nanohelices as an ultra-thin perfect light absorber

Jen

Huang

Liu

et al. 2017

Sci Rep

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Metals have been formed into nanostructures to absorb light with high efficiency through surface plasmon resonances. An ultra-thin plasmonic structure that exhibits strong absorption over wide ranges of wavelengths and angles of incidence is sought. In this work, a nearly perfect plasmonic nanostructure is fabricated using glancing angle deposition. The difference between the morphologies of obliquely deposited aluminum and silver nanohelices is exploited to form a novel three-dimensional structure, which is an aluminum-silver nanohelix array on a pattern-free substrate. With a thickness of only 470 nm, densely distributed nanohelices support rod-to-rod localized surface plasmons for broadband and polarization-independent light extinction. The extinctance remains high over wavelengths from 400 nm to 2000 nm and angles of incidence from 0° to 70°.

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Glancing angle deposited gold nanohelix arrays on smooth glass as three-dimensional SERS substrates

Cited by 27 publications

References 14 publications

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

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

Tunable Plasmonic Resonances in TiN Nanorod Arrays

Densely packed aluminum-silver nanohelices as an ultra-thin perfect light absorber

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