Plasmonic Nanocrystal Arrays on Photonic Crystals with Tailored Optical Resonances

Wang, Juan; Le‐The, Hai; Karamanos, Theodosios D.; Suryadharma, Radius N. S.; Berg, Albert van den; Pinkse, Pepijn W. H.; Rockstuhl, Carsten; Shui, Lingling; Eijkel, Jan C.T.; Segerink, Loes

doi:10.1021/acsami.0c05596

Cited by 27 publications

(24 citation statements)

References 41 publications

(99 reference statements)

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“…Additionally, PhCs can couple the Bragg mode with LSPR to improve Raman signal by exploiting slow light effect. 151 , 155 The coupling of Bragg and plasmonic modes has been well investigated by both purely photonic structures 63 and hybrid structures. 156 , 157 A plasmon-free TiO 2 inverse opal structure 64 has been fabricated for SERS with an improved Raman intensity, where the Raman signal is strongly dependent on the PSB frequency and the excitation laser wavelength ( Figure 13 c).…”

Section: Sers-based Sensingmentioning

confidence: 99%

“…The excitation light located at edges of the PSBs can travel with a reduced group velocity to confine and amplify the localized EM field. Therefore, PhCs as SERS-active substrates for quantification benefit from (1) facile fabrication of high density hotspots with high repeatability and precise controllability, 150 (2) dual tunability of coupling effects with respect to the LSPR properties of plasmonic structures and slow light effect of periodic structures, 151 and (3) controllable physical functionality, namely, superwettability and high adsorption for confinement and enrichment of analytes in liquid state in the proximity of SERS-active substrates, especially important for molecules with a poor or no affinity to the plasmonic surfaces. 152,153 PhCs can offer well-defined nanostructures as templates for subsequent construction of noble metal nanoslits, 150 clusters, 154 and arrays 4 with high density hotspots for Raman enhancement.…”

Section: Sers-based Sensingmentioning

confidence: 99%

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Bottom-Up Assembled Photonic Crystals for Structure-Enabled Label-Free Sensing

et al. 2021

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Photonic crystals (PhCs) display photonic stop bands (PSBs) and at the edges of these PSBs transport light with reduced velocity, enabling the PhCs to confine and manipulate incident light with enhanced light–matter interaction. Intense research has been devoted to leveraging the optical properties of PhCs for the development of optical sensors for bioassays, diagnosis, and environmental monitoring. These applications have furthermore benefited from the inherently large surface area of PhCs, giving rise to high analyte adsorption and the wide range of options for structural variations of the PhCs leading to enhanced light–matter interaction. Here, we focus on bottom-up assembled PhCs and review the significant advances that have been made in their use as label-free sensors. We describe their potential for point-of-care devices and in the review include their structural design, constituent materials, fabrication strategy, and sensing working principles. We thereby classify them according to five sensing principles: sensing of refractive index variations, sensing by lattice spacing variations, enhanced fluorescence spectroscopy, surface-enhanced Raman spectroscopy, and configuration transitions.

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Section: Sers-based Sensingmentioning

confidence: 99%

Section: Sers-based Sensingmentioning

confidence: 99%

Bottom-Up Assembled Photonic Crystals for Structure-Enabled Label-Free Sensing

et al. 2021

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“…Reproduced under the terms of the CC-BY-NC-ND license. [129] Copyright 2020, American Chemical Society. e-1) Scheme of the SERS substrate before (left panel) and after (right panel) the functionalization with probe aptamers, e-2) SEM image of AuNPs homogenously distributed onto the hexagonal nanopore rims, e-3) calibration curve for the detection of IL-6 in mice serum.…”

Section: Sers-based Biosensingmentioning

confidence: 99%

“…Similar huge values of EF SERS can be also attained with other 3D architecture designs. Wang et al [129] fabricated hybrid plasmonic-photonic microspheres (PPMs) with both photonic stop band (PSB) and LSPR properties. The microspheres consist of a periodic SiO 2 NP-air arrangement exhibiting the alternative permittivity required to a photonic crystal (Figure 9d).…”

Section: Sers-based Biosensingmentioning

confidence: 99%

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Nanostructured Surfaces as Plasmonic Biosensors: A Review

Minopoli

Acunzo

Ventura

et al. 2021

Adv Materials Inter

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are the main features exhibited by metal nanostructures thereby opening up the possibility for manipulating light at nanometric scale, well below the diffraction limit. [1] So far, the tremendous potentialities of the plasmon-related effects have been already represented a breakthrough in many application fields such as cancer treatment, [2] ultrasensitive molecule detection, [3] integrated circuitry, [4] quantum optics, [5] optoelectronics, [6] photovoltaics. [7] Several types of plasmonic nanostructures are being conceived these days aiming at improving the performance of plasmon-based devices. [8,9] At the basis of the nonpropagating plasmon phenomena there is the localized surface plasmon resonance (LSPR), namely, the collective oscillation of the conduction electron cloud against the metal core. [10] The plasmonic properties of metal nanomaterials strongly depend on the nanostructure geometry, arrangement, and environment. For instance, exotic nanostructures such as nanocages, nanoscaffolds, and bow-tie nanoantennas exhibit higher field enhancement than conventional nanoparticles with smooth surfaces thereby representing a considerable advantage in applications relying on signal amplification such as surface-enhanced Raman spectroscopy (SERS), [11,12] surface-enhanced infrared absorption (SEIRA), [13,14] and plasmon-enhanced fluorescence (PEF). [15,16] In addition, when nanostructures are ordered in periodic arrays, new modes can arise as a result of the near-or far-field coupling among the localized plasmons so as to activate hybrid effects such as coupled LSPR (c-LSPR) [17,18] and surface lattice resonance (SLR), [19][20][21] respectively. Besides, plasmonic properties offered by metamaterials were recently investigated and sparked considerable interest since they demonstrated to offer significantly better performance as compared to metal-based nanostructures in many fields of applications such as biosensing, [22] photonics, [23] photovoltaics, [24] and optoelectronics. [25] Nevertheless, the actual implications are still far-reaching for many scientific and engineering fields due to their complexity and low awareness. [25] Therefore, the possibility to tune the optical response of a nanostructure by tailoring the material, shape, and size, as well as the pattern architecture, is spurring the researchers to explore new approaches, in terms of both nanofabrication and nanoapplications, in order to go beyond the current limits of many techniques.The aim of the present work is to provide a comprehension of this growing field of research and to convey the main features of the nanostructured surfaces to biosensing applications.Conventional laboratory techniques exhibit impressive sensing performance and still constitute an irreplaceable tool in bioanalytics. Nevertheless, high costs, time consumption, and need for well-equipped laboratories and skilled personnel make highly desirable to explore novel strategies to carry out biochemical analyses. In this regard, biosensor-based methods represent a promising appr...

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The Fabrication of Photonic Crystal Microchip with Controllable Wettability and SERS Activity based on Surface Roughness for Trace Organic Compounds Determination

Chen

Song

Peng

et al. 2022

Adv Materials Inter

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Inspired by the fog collection structure on the back of the desert beetle, the hydrophobic photonic crystal microchip (HPCM) with dual functions of hydrophobic enrichment and surface‐enhanced Raman spectroscopy (SERS) activity is fabricated by depositing thin Ag film on the photonic crystals (PC) surface, and this is the first time that the wettability and SERS activity are controlled simultaneously by adjusting surface roughness. A 5 nm thin silver film is deposited on the PC surface of hydrophilic SiO2 to increase surface roughness so that the wettability is transformed from hydrophilicity to hydrophobicity. The hydrophobic surface not only reduces the influence of the “coffee ring” effect but also enriches the samples during analysis. Moreover, due to the sputtering of Ag film, the “hot spots” on the PC surface are increased while the periodic structure of PC remains unchanged. By coupling the photonic bandgap (PBG) of HPCM with Raman laser wavelength, the enhancement factor (EF) reaches 2.3 × 106. The outstanding performance of HPCM is attributed to the synergy between the rough surface and the PBG of PC. The designed HPCM can not only quickly, efficiently, and sensitively detect organic compounds determination, but also has potential application in environmental monitoring.

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Plasmonic Nanocrystal Arrays on Photonic Crystals with Tailored Optical Resonances

Cited by 27 publications

References 41 publications

Bottom-Up Assembled Photonic Crystals for Structure-Enabled Label-Free Sensing

Bottom-Up Assembled Photonic Crystals for Structure-Enabled Label-Free Sensing

Nanostructured Surfaces as Plasmonic Biosensors: A Review

The Fabrication of Photonic Crystal Microchip with Controllable Wettability and SERS Activity based on Surface Roughness for Trace Organic Compounds Determination

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