Gold nanoholes fabricated by colloidal lithography: novel insights into nanofabrication, short-range correlation and optical properties

Cesaria, Maura; Taurino, A.; Manera, Maria Grazia; Minunni, Maria; Scarano, Simona; Rella, R.

doi:10.1039/c8nr09911a

Cited by 17 publications

(52 citation statements)

References 96 publications

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“…the "dip") at longer wavelengths. [16][17][18]21 The increased extinction in the blue region is due to gold absorption and the increase in the near infrared is due to higher reection. For the CL pores, the spectra are very similar to previous work and the novelty here is mainly associated with the fabrication process rather than their optical response.…”

Section: Resultsmentioning

confidence: 99%

“…29 In contrast, thinner lms ($50 nm or less) have hybridized modes with very different dispersion relations. Even though the effect of short-range vs. long-range ordering has been discussed also for nanohole arrays in semitransparent lms, 16,[18][19][20] previous work has (by necessity) altered the diameter and/or the surface density of apertures. Although interesting, these studies suffer from the fact that many additional effects occur when the void fraction in the metal lm is altered.…”

Section: Resultsmentioning

confidence: 99%

“…One option to circumvent this problem is colloidal lithography (CL), which has been used to prepare plasmonic nanopores (or nanoholes) in short-range as well as hexagonal long-range order. 10,[16][17][18][19][20][21][22] Unfortunately, arbitrary patterns are not possible with CL and the process puts high demands on membrane stability in order to keep them intact during li-off. 17 Fabrication aspects aside, there is a strong interest in understanding how the ordering of the apertures inuences the optical response.…”

Section: Introductionmentioning

confidence: 99%

“…17 Fabrication aspects aside, there is a strong interest in understanding how the ordering of the apertures inuences the optical response. 18,19,23,24 In fact, several aspects of the optical properties remain unclear and the literature is inconsistent, 6 especially with respect to the nature of the far eld spectral features associated with arrays of apertures in thin metal lms.…”

Section: Introductionmentioning

confidence: 99%

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Optical properties of plasmonic nanopore arrays prepared by electron beam and colloidal lithography

et al. 2019

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Optical properties of plasmonic nanopore arrays prepared by electron beam and colloidal lithography

et al. 2019

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“…Yet it is remarkably costly, both in terms of time and cost of the required facilities . In contrast, bottom‐up fabrication techniques offer the possibility to produce patterns on large scales at low costs . One of these techniques is colloidal lithography …”

Section: Introductionmentioning

confidence: 99%

Bio‐Assisted Tailored Synthesis of Plasmonic Silver Nanorings and Site‐Selective Deposition on Graphene Arrays

Giovannini

Ardini

Maccaferri

et al. 2019

Advanced Optical Materials

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The spontaneous interaction between noble metals and biological scaffolds enables simple and cost‐effective synthesis of nanomaterials with unique features. Here, plasmonic silver nanorings are synthesized on a ring‐like protein, i.e., a peroxiredoxin (PRX), and used to assemble large arrays of functional nanostructures. The PRX drives the seeding growth of metal silver under wet reducing conditions, yielding nanorings with outer and inner diameters down to 28 and 3 nm, respectively. The obtained hybrid nanostructures are selectively deposited onto a solid‐state 2D membrane made of graphene in order to prepare plasmonic nanopores. In particular, the interaction between the graphene and the PRX allows for the simple preparation of ordered arrays of plasmonic nanorings on a 2D‐material membrane. This fabrication process can be finalized by drilling a nanometer scale pore in the middle of the ring. Fluorescence spectroscopic measurements in combination with numerical simulations demonstrate the plasmonic effects induced in the metallic nanoring cavity. The prepared nanopores represent one of the first examples of hybrid plasmonic nanopore structures integrated on a 2D‐material membrane. The diameter of the nanopore and the atomically thick substrate make this proof‐of‐concept approach particularly interesting for nanopore‐based technologies and applications such as next‐generation sequencing and single‐molecule detection.

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Nanosphere Lithography: A Versatile Approach to Develop Transparent Conductive Films for Optoelectronic Applications

et al. 2022

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Transparent conductive films (TCFs) are irreplaceable components in most optoelectronic applications such as solar cells, organic light‐emitting diodes, sensors, smart windows, and bioelectronics. The shortcomings of existing traditional transparent conductors demand the development of new material systems that are both transparent and electrically conductive, with variable functionality to meet the requirements of new generation optoelectronic devices. In this respect, TCFs with periodic or irregular nanomesh structures have recently emerged as promising candidates, which possess superior mechanical properties in comparison with conventional metal oxide TCFs. Among the methods for nanomesh TCFs fabrication, nanosphere lithography (NSL) has proven to be a versatile platform, with which a wide range of morphologically distinct nanomesh TCFs have been demonstrated. These materials are not only functionally diverse, but also have advantages in terms of device compatibility. This review provides a comprehensive description of the NSL process and its most relevant derivatives to fabricate nanomesh TCFs. The structure‐property relationships of these materials are elaborated and an overview of their application in different technologies across disciplines related to optoelectronics is given. It is concluded with a perspective on current shortcomings and future directions to further advance the field.

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Gold nanoholes fabricated by colloidal lithography: novel insights into nanofabrication, short-range correlation and optical properties

Abstract: A simplified colloidal lithography protocol (polyelectrolyte monolayer) for Au nanohole fabrication and autocorrelation/FFT analysis of SEM images to disclose hidden short-range periodicities.

Cited by 17 publications

References 96 publications

Optical properties of plasmonic nanopore arrays prepared by electron beam and colloidal lithography

Optical properties of plasmonic nanopore arrays prepared by electron beam and colloidal lithography

Bio‐Assisted Tailored Synthesis of Plasmonic Silver Nanorings and Site‐Selective Deposition on Graphene Arrays

Nanosphere Lithography: A Versatile Approach to Develop Transparent Conductive Films for Optoelectronic Applications

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