Fabrication of aluminium nanostructures for plasmonics

Martin, Jérôme; Plain, Jérôme

doi:10.1088/0022-3727/48/18/184002

Cited by 122 publications

(100 citation statements)

References 66 publications

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“…For instance, Al is compatible with optoelectronic devices and complementary metal-oxide-semiconductor (CMOS) technology. Most importantly, there is a high number of processing methods for manufacturing Al NPs of different sizes and shapes [27]. Among these methods are lithography, laser ablation and chemical synthesis.…”

Section: Aluminummentioning

confidence: 99%

Plasmonics in the Ultraviolet with Aluminum, Gallium, Magnesium and Rhodium

et al. 2018

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Ultraviolet plasmonics (UV) has become an active topic of research due to the new challenges arising in fields such as biosensing, chemistry or spectroscopy. Recent studies have pointed out aluminum, gallium, magnesium and rhodium as promising candidates for plasmonics in the UV range. Aluminum and magnesium present a high oxidation tendency that has a critical effect in their plasmonic performance. Nevertheless, gallium and rhodium have drawn a lot of attention because of their low tendency of oxidation and, at the same time, good plasmonic response in the UV and excellent photocatalytic properties. Here, we present a short overview of the current state of UV plasmonics with the latest findings in the plasmonic response and applications of aluminum, gallium, magnesium and rhodium nanoparticles.

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Section: Aluminummentioning

confidence: 99%

Plasmonics in the Ultraviolet with Aluminum, Gallium, Magnesium and Rhodium

et al. 2018

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“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] Furthermore, it is an abundant, sustainable material with the potential to transition laboratorybased research into practical applications and commercial products. Much of the current and growing interest in Aluminum plasmonics is due to the wavelength range of the plasmon resonances obtainable with simple geometries.…”

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confidence: 99%

Fano Resonant Aluminum Nanoclusters for Plasmonic Colorimetric Sensing

King¹,

Liu²,

Yang³

et al. 2015

ACS Nano

222

179

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Aluminum is an abundant and high-quality material for plasmonics with potential for large-area, low-cost photonic technologies. Here we examine aluminum nanoclusters with plasmonic Fano resonances that can be tuned from the near-UV into the visible region of the spectrum. These nanoclusters can be designed with specific chromaticities in the blue-green region of the spectrum and exhibit a remarkable spectral sensitivity to changes in the local dielectric environment. We show that such structures can be used quite generally for colorimetric localized surface plasmon resonance (LSPR) sensing, where the presence of analytes is detected by directly observable color changes rather than through photodetectors and spectral analyzers. To quantify our results and provide a metric for optimization of such structures for colorimetric LSPR sensing, we introduce a figure of merit based on the color perception ability of the human eye.

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“…[5] Therefore, it is interesting to look at the other available plasmonic materials. One interesting possibility is to introduce aluminum NCs, [24][25][26] which may have strong plasmonic resonances in the UV spectral region. In this case, one can expect both new chiro-optical properties and stronger enhancement effects.…”

mentioning

confidence: 99%

Aluminum Nanoparticles with Hot Spots for Plasmon‐Induced Circular Dichroism of Chiral Molecules in the UV Spectral Interval

Besteiro

Zhang

Plain

et al. 2017

Advanced Optical Materials

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absorb and scatter visible light and, furthermore, plasmonic NCs are known for their strong local enhancement of electromagnetic fields. When a chiral biomolecule is attached to a nonchiral metal NC, the chiral response of a biomolecule becomes transferred to the plasmonic NC via near-field dipolar and multipolar interactions. [4,5] Circular dichroism spectroscopy, which quantifies the difference between the assembly's responses to left and right circularly polarized light, is a well-established experimental method to measure the chiral properties of an assembly. In the biomolecule-NC assembly, CD spectra typically show modified molecular lines, in addition to including new lines coming from plasmon excitations in the NCs. It was demonstrated in a large number of experiments [3,6,7] that it is possible to observe plasmon-induced CD in the visible spectral interval using NCs made of gold and silver. It is a very interesting possibility, since the original CD signals of important biomolecules (such as proteins and DNA) are typically in the UV spectral region. In addition to the material composition of an assembly, its design also plays an important role. For example, the plasmoninduced CD can be strongly enhanced by using NC assemblies Plasmonic nanocrystals with hot spots are able to localize optical energy in small spaces. In such physical systems, near-field interactions between molecules and plasmons can become especially strong. This paper considers the case of a nanoparticle dimer and a chiral biomolecule. In this model, a chiral molecule is placed in the gap between two plasmonic nanoparticles, where the electromagnetic hot spot occurs. Since many important biomolecules have optical transitions in the UV spectral region, the case of aluminum nanoparticles is considered, as they offer strong electromagnetic enhancements in the blue and UV spectral intervals. The calculations in this study show that the complex composed of a chiral molecule and an Al dimer exhibits strong circular dichroism (CD) signals in the plasmonic spectral region. In contrast to the standard Au and Ag nanocrystals, the Al system may have a much better spectral overlap between the typical biomolecule's optical transitions and the nanocrystals' plasmonic band. Overall, it is found that Al nanocrystals used as CD antennas exhibit unique properties as compared to other commonly studied plasmonic and dielectric materials. The plasmonic systems investigated in this study can be potentially used for sensing chirality of biomolecules, which is of interest in applications such as drug development.

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Fabrication of aluminium nanostructures for plasmonics

Cited by 122 publications

References 66 publications

Plasmonics in the Ultraviolet with Aluminum, Gallium, Magnesium and Rhodium

Plasmonics in the Ultraviolet with Aluminum, Gallium, Magnesium and Rhodium

Fano Resonant Aluminum Nanoclusters for Plasmonic Colorimetric Sensing

Aluminum Nanoparticles with Hot Spots for Plasmon‐Induced Circular Dichroism of Chiral Molecules in the UV Spectral Interval

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