Reflectance and SERS from an ordered array of gold nanorods

Berlouis, L.E.A.; McMillan, Brian G.; Cruickshank, F. R.; Brevet, Pierre‐François

doi:10.1016/j.electacta.2007.02.055

Cited by 18 publications

(19 citation statements)

References 34 publications

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“…SERS has been developed as a promising technology to detect and characterize a wide range of adsorbate molecules at low concentrations with ultrahigh sensitivity 35. Many methods are available to create different types of SERS‐active substrates.…”

Section: Resultsmentioning

confidence: 99%

Surface‐Structured Gold‐Nanotube Mats: Fabrication, Characterization, and Application in Surface‐Enhanced Raman Scattering

Fathima

Paul

Valiyaveettil

2010

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The fabrication and characterization of nanostructured fibrous gold mats having high specific surface areas is reported. Freestanding porous films of 6-20-μm thickness and density 0.43 ± 0.02 g cm(3) are prepared using e-beam evaporation of gold on an electrospun nanoporous polymer template and subsequent removal of the template polymer in a suitable solvent. Structural characterization using electron microscopy techniques shows a nanofiber diameter in the range of 300-6000 nm, and the size of the nanochannels on the fiber surface is ≈200-350 nm. Such surface structuring is achieved through fast evaporation of organic solvent and phase separation of polymers during the electrospinning process. The wedge thickness varies from a few nanometers to a few tens of nanometers. The freestanding films possess good mechanical integrity and robustness. The calculated Young's modulus based on the slope in the elastic region is ≈114 MPa and gives an ultimate breaking strength of 0.7-0.8 MPa at a percentage elongation of 1.5-2.0%. X-ray diffraction and transmission electron microscopy measurements demonstrate the formation of polycrystalline gold nanostructures. Electrical characterization performed on these gold nanotubes reveals pure metallic behavior. Raman spectroscopic characterization of the fibrous membrane is performed using crystal violet (CV) adsorbed on it. Well-defined spectral peaks are obtainable at concentrations as low as 10(-7) M of CV, which did not give spectral signals at this low concentration on its own.

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Section: Resultsmentioning

confidence: 99%

Surface‐Structured Gold‐Nanotube Mats: Fabrication, Characterization, and Application in Surface‐Enhanced Raman Scattering

Fathima

Paul

Valiyaveettil

2010

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“…see the review article by Pérez-Juste et al [34]. In the case of self-standing and embedded Au-NRs two modes were discussed and the accompanying peaks in extinction and reflection spectra reported [16,[35][36][37]. These spectra could be theoretically well reproduced by a local treatment of the geometry with finite-element calculations [35] as well as by a global approach, using effective dielectric constants for the layers [16,36,37].…”

Section: Morphological Effects On Optical Propertiesmentioning

confidence: 92%

“…In the case of self-standing and embedded Au-NRs two modes were discussed and the accompanying peaks in extinction and reflection spectra reported [16,[35][36][37]. These spectra could be theoretically well reproduced by a local treatment of the geometry with finite-element calculations [35] as well as by a global approach, using effective dielectric constants for the layers [16,36,37]. The two peaks were designated transverse and longitudinal modes in account of their dependence on the polarization of the electric fields [16,36,37].…”

Section: Morphological Effects On Optical Propertiesmentioning

confidence: 97%

“…These spectra could be theoretically well reproduced by a local treatment of the geometry with finite-element calculations [35] as well as by a global approach, using effective dielectric constants for the layers [16,36,37]. The two peaks were designated transverse and longitudinal modes in account of their dependence on the polarization of the electric fields [16,36,37]. The diffuse reflectance spectra displayed in Fig.…”

Section: Morphological Effects On Optical Propertiesmentioning

confidence: 99%

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On-substrate, self-standing Au-nanorod arrays showing morphology controlled properties

et al. 2011

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“…19,117 Gold nanorods have recently been electrochemically ordered to produce highly effective SERS substrates. 118 These are easily fashioned by the lithographic procedures discussed above, but increasingly chemical methodologies are being developed that can produce them. Nanorod arrays have been fabricated by the use of anodic aluminium oxide films as templates.…”

Section: Aspherical Particlesmentioning

confidence: 99%

Nanostructures and nanostructured substrates for surface—enhanced Raman scattering (SERS)

Brown

Milton

2008

J Raman Spectroscopy

219

201

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We review the performance of various nanoscaled structures needed to support the propagation of the surface plasmons responsible for surface-enhanced Raman scattering (SERS), and assess the potential for the optimisation of the compromise between enhancement and reproducibility that they provide, and hence their utility for relevant applications. We divide these nanostructures into those comprising structured arrays of discrete nanoparticles in two or three dimensions, and those comprising structured or regularly patterned surfaces in two or three dimensions. The most promising in terms of this compromise are those that involve the tethering of functionalised metal nanoparticles to surfaces. They are not only reproducible, but the functionalisation provides a measure of selectivity to relevant target analytes that the majority of SERS applications require.

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Reflectance and SERS from an ordered array of gold nanorods

Cited by 18 publications

References 34 publications

Surface‐Structured Gold‐Nanotube Mats: Fabrication, Characterization, and Application in Surface‐Enhanced Raman Scattering

Surface‐Structured Gold‐Nanotube Mats: Fabrication, Characterization, and Application in Surface‐Enhanced Raman Scattering

On-substrate, self-standing Au-nanorod arrays showing morphology controlled properties

Nanostructures and nanostructured substrates for surface—enhanced Raman scattering (SERS)

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