One-step integration of metal nanoparticle in photonic crystal nanobeam cavity

Mukherjee, Ishita; Hajisalem, Ghazal; Gordon, Reuven

doi:10.1364/oe.19.022462

Cited by 31 publications

(25 citation statements)

References 30 publications

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“…54 with permission, subfigure n was reproduced from ref. 228 with permission, subfigure o was reproduced from ref. 56 with permission, and subfigure p was reproduced with permission.…”

Section: Figmentioning

confidence: 99%

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Photonic crystals: emerging biosensors and their promise for point-of-care applications

et al. 2017

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Biosensors are extensively employed for diagnosing a broad array of diseases and disorders in clinical settings worldwide. The implementation of biosensors at the point-of-care (POC), such as at primary clinics or the bedside, faces impediments because they may require highly trained personnel, have long assay times, large sizes, and high instrumental cost. Thus, there exists a need to develop inexpensive, reliable, user-friendly, and compact biosensing systems at the POC. Biosensors incorporated with photonic crystal (PC) structures hold promise to address many of the aforementioned challenges facing the development of new POC diagnostics. Currently, PC-based biosensors have been employed for detecting a variety of biotargets, such as cells, pathogens, proteins, antibodies, and nucleic acids, with high efficiency and selectivity. In this review, we provide a broad overview of PCs by explaining their structures, fabrication techniques, and sensing principles. Furthermore, we discuss recent applications of PC-based biosensors incorporated with emerging technologies, including telemedicine, flexible and wearable sensing, smart materials and metamaterials. Finally, we discuss current challenges associated with existing biosensors, and provide an outlook for PC-based biosensors and their promise at the POC.

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“…54 with permission, subfigure n was reproduced from ref. 228 with permission, subfigure o was reproduced from ref. 56 with permission, and subfigure p was reproduced with permission.…”

Section: Figmentioning

confidence: 99%

“…Periodic holes are fabricated on a column of a beam that is highly sensitive to refractive index changes. 228 (d) Bragg films. Multiple layers of thin films form a Bragg mirror, resulting in an approximately 100% reflection.…”

Section: Figmentioning

confidence: 99%

Photonic crystals: emerging biosensors and their promise for point-of-care applications

et al. 2017

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“…Since high dissipative losses and broad spectral features limit the performance of conventional metalbased plasmonic nanostructures in key applications, different strategies are currently pursued to mitigate these effects [16][17][18][19]. One promising approach seeks to integrate plasmonic nanostructures into a defined photonic environment where photonic and plasmonic modes can synergistically interact [20][21][22][23][24][25]. The coupling of localized surface plasmon resonances (LSPRs) with in-plane diffracted Rayleigh resonances to form surface lattice resonances (SLRs) in extended nanoparticle arrays is one example for this approach [26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Coupled-Mode Theory and Its Applications on Computational Nanophotonics

2015

Integrated Nanophotonic Resonators

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Abstract:The integration of metallic and dielectric building blocks into optoplasmonic structures creates new electromagnetic systems in which plasmonic and photonic modes can interact in the near-, intermediate-and farfield. The morphology-dependent electromagnetic coupling between the different building blocks in these hybrid structures provides a multitude of opportunities for controlling electromagnetic fields in both spatial and frequency domain as well as for engineering the phase landscape and the local density of optical states. Control over any of these properties requires, however, rational fabrication approaches for well-defined metal-dielectric hybrid structures. Template-guided self-assembly is a versatile fabrication method capable of integrating metallic and dielectric components into discrete optoplasmonic structures, arrays, or metasurfaces. The structural flexibility provided by the approach is illustrated by two representative implementations of optoplasmonic materials discussed in this review. In optoplasmonic atoms or molecules optical microcavities (OMs) serve as whispering gallery mode resonators that provide a discrete photonic mode spectrum to interact with plasmonic nanostructures contained in the evanescent fields of the OMs. In extended hetero-nanoparticle arrays in-plane scattered light induces geometry-dependent photonic resonances that mix with the localized surface plasmon resonances of the metal nanoparticles. We characterize the fundamental electromagnetic working principles underlying both optoplasmonic approaches and review the fabrication strategies implemented to realize them.

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“…It is worth noting that Allsop et al [19] demonstrated S of 3365 nm∕RIU in surface plasmon resonance structure and Wang et al [33] demonstrated S of 900 nm∕RIU in slot double-beam waveguides; however, Q-factors are limited to 1000 in [19] and 700 in [33]. In order to overcome above drawbacks and realize simultaneously high Q and S, PhC nano-beam cavities (PCNCs) [34][35][36] are currently the subject of intense research interest because they possess a suite of attractive characteristics: high optical Q-factor, wavelength-scale effective mode volume, low effective mass, and small physical footprint. Integrated within planer photonic waveguide circuitry, PCNCs provide an ideal architecture for sensing applications.…”

Section: Introductionmentioning

confidence: 99%

Refractive index sensing utilizing parallel tapered nano-slotted photonic crystal nano-beam cavities

et al. 2014

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We demonstrate refractive index sensing using parallel tapered nano-slotted photonic-crystal nano-beam cavities with three-dimensional (3D) finite-difference time-domain (3D-FDTD) simulation. The electric field of the cavity mode is strongly concentrated in the slot region leading to a large light-matter overlap, which is expected to add a significant contribution to sensitivity, and thus we present high refractive-index sensitivity of more than 600 nm∕refractive index units. Additionally, the quality (Q)-factor in the proposed design is theoretically investigated, and through tapering the diameter of the pores outside the Bragg mirrors in nano-beam cavities and the width of the adjacent nano-slots, an optimal Q-factor of 11770 is obtained. A high figure of merit (FOM 4637) of the designed model has been obtained. We anticipate that this geometry is potentially an ideal platform for refractive-index based bio-sensing.

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One-step integration of metal nanoparticle in photonic crystal nanobeam cavity

Cited by 31 publications

References 30 publications

Photonic crystals: emerging biosensors and their promise for point-of-care applications

Photonic crystals: emerging biosensors and their promise for point-of-care applications

Coupled-Mode Theory and Its Applications on Computational Nanophotonics

Refractive index sensing utilizing parallel tapered nano-slotted photonic crystal nano-beam cavities

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